WO2021012758A1 - 发热装置、发热体及电子烟 - Google Patents

发热装置、发热体及电子烟 Download PDF

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Publication number
WO2021012758A1
WO2021012758A1 PCT/CN2020/090352 CN2020090352W WO2021012758A1 WO 2021012758 A1 WO2021012758 A1 WO 2021012758A1 CN 2020090352 W CN2020090352 W CN 2020090352W WO 2021012758 A1 WO2021012758 A1 WO 2021012758A1
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WO
WIPO (PCT)
Prior art keywords
heating
heat
lead
heat conductor
heating device
Prior art date
Application number
PCT/CN2020/090352
Other languages
English (en)
French (fr)
Inventor
雷苗苗
Original Assignee
雷苗苗
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910663500.6A external-priority patent/CN110200333A/zh
Priority claimed from CN202020470775.6U external-priority patent/CN212488473U/zh
Application filed by 雷苗苗 filed Critical 雷苗苗
Publication of WO2021012758A1 publication Critical patent/WO2021012758A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means

Definitions

  • the present disclosure relates to the field of electronic cigarettes, and in particular to a heating device, a heating body and an electronic cigarette.
  • heat-not-burn electronic cigarettes are mainly divided into e-cigarettes and heat-not-burn electronic cigarettes.
  • the heat-not-burn electronic cigarette is a new type of industry.
  • the internal temperature of the heat-not-burn electronic cigarette is as high as 300-350 °C by heating the heating device through the power supply of the host computer.
  • the heating devices of heating non-burning electronic cigarettes mostly use heating strips, heating sheets, heating rods or heating cups, which have the characteristics of no open flame, no soot, less tar, less nicotine, etc., have little harm to the body, and basically no second-hand smoke harm , And has the taste of real cigarettes, which can achieve the effects that traditional cigarettes cannot achieve, such as healthy replacement of cigarettes, easy smoking control, and assisting smoking cessation.
  • the heating piece After the heating piece is inserted into the cartridge, the heating piece is easily broken, the cartridge is easy to loosen, and the fixing effect is not good.
  • the temperature rise and fall speed of the existing heating rod is relatively slow and the utilization rate of heat energy is low, and the user experience is poor.
  • An embodiment of the present disclosure provides a heating device, and the heating device includes:
  • Heating body heating body
  • a lead wire connected with the heating body, the lead wire is used to connect with an external circuit board;
  • a heat conductor sleeved on the heating body, the heat conductor is a hollow structure, the head end of the heat conductor is used to extend into the object to be heated, so that when the lead wire is energized, the heat conductor The object to be heated transfers heat.
  • the heating device further includes a positioning member; the positioning member is installed at the end of the heat conductor and is used to cooperate with the heat conductor to form a cavity for accommodating the heating body.
  • the positioning member extends into the tail end of the heat conductor to form a cavity for accommodating the heating body
  • the tail end of the heat conductor is installed inside the positioning member to form a cavity for accommodating the heating body.
  • the positioning member and the heat conductor are connected by interference fit.
  • the lead includes a first lead and a second lead, and the first lead and the second lead are connected to the heating body;
  • the first lead is connected to the external circuit board through a first positioning portion on the positioning member;
  • the second lead is connected to the external circuit board through a second positioning portion on the positioning member;
  • the first positioning portion and the second positioning portion are separated from each other.
  • the first positioning portion is a through hole
  • the second positioning portion is a limiting groove
  • a positioning hole is opened on the body of the heat conductor
  • the lead wire passes through the positioning hole from the inside of the heat conductor with a cavity to the outside of the heat conductor, and is connected to the external circuit board.
  • the head end of the heat conductor is in the shape of a needle for extending into the object to be heated.
  • the heating body is any one of heating wire, heating sheet, and heating rod.
  • the embodiments of the present disclosure also provide an electronic cigarette, which includes the aforementioned heating device.
  • the embodiments of the present disclosure also provide a heating unit.
  • the heating unit includes a heat-conducting base, a heat-generating part, and a power supply body.
  • the heat-conducting base includes a hollow cavity, and the hollow cavity is a vacuum cavity;
  • the heat-conducting base body is provided;
  • the power supply body is electrically connected with the heating part for heating the heating part.
  • the heat-conducting substrate includes a hollow tube and a sealing plug, the hollow tube is provided with an opening, and the sealing plug is disposed at the opening to seal the opening.
  • the heating part is arranged in close contact with the inner wall of the hollow cavity.
  • the heating part is arranged in close contact with the outer surface of the heat conducting base.
  • the heating part is a resistance layer printed on the heat conducting substrate.
  • the resistance layer is a spiral resistance layer wound along the thermally conductive substrate.
  • a printed protection layer is provided on the outer surface of the resistance layer.
  • an anti-fouling layer is provided on the outer surface of the resistance layer.
  • the heating element described above further includes a lead wire, one end of the lead wire is welded to the heating part, and the other end is electrically connected to the power supply body.
  • the thermal conductive substrate is a thermal conductive substrate made of ceramic material.
  • the heating part is a resistance wire wound on the outer surface of the heat conducting base.
  • the embodiments of the present disclosure also provide an electronic cigarette, which includes the aforementioned heating element.
  • FIG. 1 is a schematic diagram of a heating device (also called a heating element) provided by an embodiment of the disclosure.
  • FIG. 2 is a schematic diagram of the cooperation between a heat conductor and a positioning member according to an embodiment of the disclosure.
  • Fig. 3 is a schematic diagram of an assembly of a heating device in an example provided by an embodiment of the disclosure.
  • Fig. 4 is a schematic diagram of a positioning member in an example provided by an embodiment of the disclosure.
  • Fig. 5 is a schematic diagram of another positioning member in an example provided by an embodiment of the disclosure.
  • Fig. 6 is a schematic diagram of an assembled heating device in an example provided by an embodiment of the disclosure.
  • FIG. 7 is a schematic structural diagram of a heating body of a heating device provided by an embodiment of the disclosure.
  • FIG. 8 is a schematic structural diagram of another heating body of the heating device provided by the embodiment of the disclosure.
  • FIG. 9 is a schematic structural diagram of still another heating body of the heating device provided by the embodiment of the disclosure.
  • Fig. 10 is a schematic view of the structure of the heating body described in Fig. 9 from another perspective.
  • FIG. 11 is a schematic diagram of another heating device provided by an embodiment of the disclosure.
  • FIG. 12 is a schematic diagram of an electronic cigarette provided by an embodiment of the disclosure.
  • Fig. 13 is a structural diagram of another heating element provided by an embodiment of the disclosure.
  • Icon 10-electronic cigarette; 100-heating device/heating body; external circuit board-150; 110-heating body; 120-lead; 121-first lead; 122-second lead; 130-heat conductor; head end- 1301; tail end-1302; 131-positioning hole; 140-positioning member; 141-first positioning portion; 142-second positioning portion; blocking member-160; 200-cartridge; 300-shell; 2100-heat conducting substrate 2200-heating part; 2300-hollow tube; 2400-sealing plug; 2500-opening; 2600-resistance layer; 2601-first welding part; 2602-second welding part.
  • the fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a connection between two components.
  • the fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a connection between two components.
  • the heating device, the heating element and the electronic cigarette provided by the embodiments of the present disclosure have a fast temperature rise and fall speed and a high thermal energy utilization rate, which improves the problems of the electronic cigarette in the prior art that the temperature rise and fall speed is slow and the thermal efficiency is low.
  • FIG. 1 is a schematic structural diagram of a heating device 100 according to an embodiment of the disclosure.
  • the heating device 100 can be applied to a scene or equipment that needs to be heated.
  • the heating device 100 can be applied to an electronic cigarette.
  • the heating device 100 (also called a heating body) includes a heating body 110 (heating body, also called a heating part), a lead 120, and a heat conductor 130 (also called a heat conducting base).
  • the heat conductor 130 is sleeved on the heating body 110, and the heating body 110 is connected with the lead 120.
  • the lead 120 is used to connect with the external circuit board 150.
  • the external circuit board 150 is used to supply power to the heating device 100.
  • a power supply can be mounted on the external circuit board 150.
  • the external circuit board 150 can also be connected to a power source.
  • the heat conductor 130 has a hollow structure.
  • the interior of the hollow structure heat conductor 130 is not completely filled. Incomplete filling means that the interior of the guiding heating body 130 is not completely filled with a solid body.
  • the heat conductor 130 may only have the heating body 110 and a part of the lead 120. A certain gap may be left between the heating body 110 and the inner wall of the heat conductor 130, so that the inside of the heat conductor 130 is not completely filled.
  • the heat conductor 130 may include a head end 1301 and a tail end 1302.
  • the head 1301 of the thermal conductor 130 is used to extend into the object to be heated, so that when the lead 120 is energized, the thermal conductor 130 transfers heat to the object to be heated.
  • the end 1302 of the thermal conductor 130 is used to fix the lead 120.
  • the material of the thermal conductor 130 may be ceramic or metal.
  • thick film printing technology is usually used to print the heating paste on a ceramic substrate according to a certain thickness and shape to form heating bars or heating bars.
  • the finally formed heating rod or heating strip is actually a solid heating structure coated with heating paste on the surface, and the temperature rise and fall speed is slow and the thermal efficiency is low.
  • the heat conductor 130 is sleeved on the heating body 110, and the heat conductor 130 has a hollow structure.
  • the hollow structure of the heat conductor 130 and the heating body 110 inside can jointly realize hollow heating.
  • the difference between hollow heating and solid heating is that the difference in internal structure results in different heating capabilities.
  • the hollow heating structure can radiate more energy from the radiating surface.
  • the heat efficiency of the hollow heating structure is higher. In one example, the energy radiated by the hollow heating structure exceeds that of the solid heating structure by more than 10%.
  • the heat conductor since the heat conductor is sheathed on the heating body, and the heat conductor has a hollow structure. Hollow heating can be realized by the hollow heat conductor and the heating body inside. Compared with the prior art, when the lead wire is energized, the above structure can radiate more energy from the radiating surface, with higher thermal efficiency, and rapid temperature rise and fall. .
  • the heating device 100 compared with the prior art, not only has higher thermal efficiency, but also saves energy. If the heating device 100 of the same volume is compared with the heating strip in the prior art, the two are heated to the same temperature and then cooled naturally. According to the specific heat capacity formula, it can be known that the heat of the heating device 100 is due to the same temperature. The mass can be smaller, the temperature of the heating device 100 described above drops faster, and the time is shorter. This principle can achieve rapid temperature rise and fall.
  • the heat conductor 130 may be a cylindrical hollow structure.
  • the head 1301 of the heat conductor 130 may be closed, and the tail 1302 may be opened.
  • the diameter of the head end 1301 of the heat conductor 130 away from the tail end 1302 is smaller than the diameter of the cylindrical part of the heat conductor 130.
  • the head end of the heat conductor 130 may be in the shape of a needle or a truncated cone, as the insertion end of the object to be heated. In this way, it is more convenient for the heat conductor 130 to be inserted into the object to be heated, and the resistance during the insertion process can be reduced.
  • the heating device 100 may further include a positioning member 140 (sealing plug).
  • the positioning member 140 can be installed at the opening of the tail end 1302 of the thermal conductor 130.
  • the positioning member 140 is used to cooperate with the heat conductor 130 to form a cavity for accommodating the heating body 110.
  • the lead 120 connected to the heating body 110 may be connected to the external circuit board 150 through the positioning member 140.
  • the positioning member in the heating device can cooperate with the heat conductor to form a cavity to accommodate the heating body, which is beneficial to realize hollow heating and improve thermal efficiency.
  • the material of the positioning member 140 is an insulating and high temperature resistant material, and the material of the positioning member 140 may be, but not limited to, ceramic.
  • the positioning member 140 By providing the positioning member 140 at the opening of the end 1302 of the heat conductor 130, it is beneficial to fix the lead 120 and avoid short circuit, and it is also beneficial for the heat conductor 130 and the positioning member 140 to form a cavity for accommodating the heating body 110. , A structure that can realize hollow heating is obtained, thereby improving thermal efficiency.
  • the first end of the positioning member 140 can extend into the tail end 1302 of the heat conductor 130 to form a cavity for accommodating the heating body 110.
  • the second end of the positioning member 140 may extend into the tail end of the heat conductor 130 or may be exposed outside the heat conductor 130.
  • part or all of the positioning member 140 is extended to the end 1302 of the heat conductor 130, which is beneficial to increase the contact area between the outer wall of the heat conductor 130 and the object to be heated.
  • the processing area for the outer wall of the heat conductor 130 can be reduced.
  • the heat conductor 130 can allow a larger area to be inserted.
  • the entire thermal conductor 130 can even be completely inserted into the solid object to be heated, so that the entire outer wall of the object is in contact with the solid object to be heated, which is not only conducive to improving heating efficiency, but also more convenient Install the solid object to be heated.
  • the tail end 1301 of the heat conductor 130 is installed inside the positioning member 140 to form a cavity for accommodating the heating body 110.
  • the cavity may be represented as The dotted area inside the thermal conductor 130.
  • the shape of the inner wall of the positioning member 140 can be matched with the shape of the outer wall of the heat conductor 130 so that the tail end 1302 of the heat conductor 130 can be installed inside the positioning member 140 to form a cavity for accommodating the heating body 110.
  • the positioning member 140 is sleeved on the tail end 1302 of the heat conductor 130, which is more convenient for processing and assembly, and more convenient for the replacement of various components of the heating device 100.
  • the positioning member 140 is sleeved on the end 1302 of the heat conductor 130 to form a cavity with a larger volume inside the heat conductor 130.
  • the positioning member can cooperate with the hollow heat conductor to form a cavity for accommodating the heat generating body.
  • the contact area between the outer wall of the heat conductor and the object to be heated can be increased, for example, the heating efficiency can be improved.
  • the positioning member is installed outside the heat-conducting body, that is, sleeved on the end of the heat-conducting body, it will be more convenient to assemble the heating device, and it is more convenient to replace the various components of the heating device.
  • locating the positioning member on the end of the thermal conductor can form a cavity with a larger volume.
  • any component of the heating device 100 mentioned in this embodiment has high temperature resistance characteristics.
  • the positioning member 140 and the heat conductor 130 may be connected by interference fit.
  • the interference fit connection relies on the interference value of the shaft and the hole. After assembly, elastic pressure is generated between the surfaces of the parts to obtain a tight connection.
  • kind of connection Corresponding to the positioning member 140 in the above two embodiments, the outer wall of the positioning member 140 and the inner wall of the heat conductor 130 are connected by interference fit, or the inner wall of the positioning member 140 and the outer wall of the heat conductor 130 are connected by interference fit. .
  • the positioning element and the heat conductor are connected by interference fit, which can make the structure of the entire heating device more compact and denser, and can avoid using too many parts for fixing, which is convenient for production and installation.
  • the coaxial interference fit connection between the positioning member 140 and the heat conductor 130 can make the structure of the heating device 100 more compact, with better compactness, and increase the air tightness of the heating device 100 without having to use it. Multiple connectors realize the connection.
  • the lead 120 connected to the heating body 110 may include a first lead 121 and a second lead 122. Both the first lead 121 and the second lead 122 are connected to the heating body 110.
  • the heating body 110 can be regarded as a special resistance between the first lead 121 and the second lead 122, and the heating body 110 has the function of generating heat when energized.
  • the heat generating body 110 located inside the heat conductor 130 generates heat.
  • the positioning member 140 may be provided with a first positioning portion 141 and a second positioning portion 142, and the first positioning portion 141 and the second positioning portion 142 are respectively used for mounting the first lead 121 and the second lead 122.
  • the first lead 121 is connected to the external circuit board 150 through the first positioning portion 141 on the positioning member 140, and the second lead 122 is connected to the external circuit board 150 through the second positioning portion 142 on the positioning member 140.
  • the first positioning portion 141 and the second positioning portion 142 are isolated from each other.
  • the first positioning part 141 and the second positioning part 142 isolated from each other on the positioning member 140 can isolate and fix the first lead 121 and the second lead 122 respectively, so as to avoid short circuit between the first lead 121 and the second lead 122 ,
  • the service life of the heating device 100 is prolonged, and the safety of the heating device 100 is improved.
  • the two positioning parts on the positioning member 140 are used to isolate and fix the two leads 120 respectively, which is beneficial to improve the structural stability of the entire heating device 100 , To reduce the probability of loosening of the lead 120.
  • the first positioning portion 141 and the second positioning portion 142 may be through holes.
  • the first lead 121 and the second lead 122 are respectively connected to the external circuit board through two through holes on the positioning member 140.
  • the first positioning portion 141 and the second positioning portion 142 may be positioning grooves.
  • the first lead 121 and the second lead 122 may extend out of the heat conductor 130 along the limiting groove.
  • the first positioning portion 141 may be a through hole
  • the second positioning portion 142 may be a limiting groove
  • the first lead 121 passes through the positioning member 140.
  • the through holes of ⁇ are connected to the external circuit board 150
  • the second lead 122 extends out of the heat conductor 130 along the limiting groove
  • the second lead 122 is used to connect the external circuit board 150.
  • a through hole is defined in the center of the positioning member 140 as the first positioning portion 141, and a groove is defined on the side wall of the positioning member 140 as the second positioning portion 142.
  • the positioning member 140 is a positioning member sleeved on the tail end 1302 of the thermal conductor 130, and the bottom of the positioning member 140 is provided with two through holes. Among them, a through hole at the central position is the first positioning part. 141. Another through hole serves as the second positioning portion 142.
  • arranging the first positioning portion 141 at the center of the positioning member 140 will be more conducive to fixing the first lead 121 and prevent the first lead 121 from breaking.
  • the positioning member 140 is used to fix the lead 120, which is beneficial to reduce the damage to the lead 120 when the heating device 100 is inserted or installed as a whole, and improves the stability of the overall structure.
  • the heating body 110 and the lead 120 can be connected first, and then the lead 120 is passed through the positioning member 140 for isolation and fixing, and then the heating body 110, part of the lead 120 and the positioning member 140 It extends into the thermal conductor 130 for fixing.
  • An assembled heating device 100 is shown in FIG. 6, and a part of the lead 120 exposed in FIG. 6 is used to connect an external circuit board.
  • thick film printing technology has higher requirements on the process and is difficult to process.
  • the heating device 100 provided by the embodiment of the present disclosure is more convenient to assemble. The assembly process is simpler and can reduce the process dependence on thick film printing technology.
  • the heating body 110 in the heating device 100 may be any one of a heating wire, a heating sheet, and a heating rod.
  • the heating body 110 is a heating wire.
  • the heating wire can be wound around part of the lead 120 to form a spiral heating body 110.
  • the spiral heating body 110 may be evenly wound on the first lead 121, and two ends of the heating body 110 are respectively connected to the first lead 121 and the second lead 122, which is beneficial to realize uniform heating.
  • the heating body 110 may not be wound on the first lead 121, and both ends of the heating body 110 may be directly connected to the lead 120.
  • the heating wire can be a heating wire of any curved shape, as long as there is a certain gap between the two ends of the heating wire to avoid a short circuit.
  • the heating body 110 is a heating sheet.
  • the heating body 110 is a heating sheet
  • at least one opening is provided on the heating sheet, and the opening is provided between the two lead wires 120.
  • the opening on the heating sheet can be a linear opening as shown at "A" in Fig. 8, or can be other irregularly shaped openings.
  • the opening on the heating piece can avoid short circuit. Improve the service life of the heating device 100.
  • the heating body 110 is a heating rod formed of a curved heating sheet.
  • FIG. 9 and FIG. 10 are schematic diagrams of the heating rod in two viewing angles, respectively.
  • the curved heating sheet is provided with a first opening (see “B” in Figure 9) and a second opening (see “C” in Figure 10).
  • the depth of the first opening is greater than the depth of the second opening. It can be arranged along the side wall of the heating rod, and the extension direction of the first opening is the same as the extension direction of the heating rod. Due to the existence of the first opening, the two sides of the heating rod connected with the lead 120 do not contact each other, which can prevent the heating rod from being short-circuited.
  • the thermal efficiency can be increased.
  • the positions of the first opening and the second opening may be symmetrically arranged.
  • the material of the lead 120 may be, but not limited to, nickel wire and nickel copper wire.
  • an insulating layer may be sleeved on the lead 120.
  • an insulating layer may be provided on a part of the lead 120 that is in contact with the positioning member 140 and a part of the lead 120 that extends out of the heat conductor 130.
  • the heating device 100 in the foregoing embodiment may omit the positioning member 140, and the lead 120 is fixed by the body of the heat conductor 130 in the heating device 100. Even if the positioning member is omitted, when the lead wire is energized, the cavity structure of the heat conductor itself and the heating wire inside can also achieve hollow heating. Compared with the prior art, it has higher thermal efficiency and can achieve rapid temperature rise and fall.
  • a positioning hole 131 is provided on the body of the heat conductor 130.
  • the heat conductor 130 is a hollow structure, and the heat conductor 130 itself may form a cavity for accommodating the heating body 110.
  • the positioning hole 131 may be opened at the end of the thermal conductor 130.
  • the lead 120 connected to the heating body 110 may pass through the positioning hole 131 from the inside of the heat conductor 130 with a cavity to the outside of the heat conductor 130 to be connected to an external circuit board.
  • an insulating layer may be provided on the lead 120.
  • the positioning hole 131 may be opened on the side wall of the rear end of the thermal conductor 130, as shown in FIG. 11.
  • the extension direction of the positioning hole 131 can be at a specified angle with the extension direction of the heat conductor 130.
  • the specified angle can be 30°, 45°, 60°, or 85°. Need to set the specified angle.
  • two positioning holes 131 arranged obliquely are opened on the side wall of the heat conductor 130, and the two leads 120 can be connected to the external circuit board through the two positioning holes 131 respectively.
  • a blocking member 160 can be provided at a designated position of the heat conductor 130. It may be a position on the thermal conductor 130 near the end 1302, such as the position of the dividing line indicated at "D" in FIG. 11.
  • the blocking member may be directly provided on the heat conductor 130, or may be provided at an external installation position, for example, may be provided in an electronic cigarette where the heating device 100 is installed.
  • the positioning hole 131 may be opened at the bottom of the tail end of the heat conductor 130, which can avoid the obstacle to the insertion of the object to be heated.
  • the positioning hole 131 may be insulated or not.
  • the hollow structure of the heat conductor 130 and the heating body 110 inside the heat conductor 130 can form a hollow heating structure. Compared with the existing method of relying on thick film printing technology to obtain the heating structure, it has a higher Thermal efficiency, fast heating and cooling speed.
  • the embodiment of the present disclosure also provides an electronic cigarette 10, which may be a heat-not-burn electronic cigarette 10.
  • the electronic cigarette 10 includes the heating device 100 in the foregoing embodiment, and may also include a cartridge 200.
  • the heating device 100 is a hollow heating device, and the heating device 100 can heat the cartridge 200 inserted into the electronic cigarette 10.
  • the electronic cigarette 10 may include a housing 300, a base for installing the heating device 100 may be arranged inside the housing 300, and a circuit board 150 may be arranged inside the housing 300.
  • the heating device 100 is installed on the base of the electronic cigarette 10.
  • the circuit board can be used to supply power to the heating device 100.
  • the body of the electronic cigarette 10 can be provided with a storage slot for accommodating the cartridge 200 as a base for installing the heating device 100.
  • the heating device 100 is installed at the bottom of the storage slot, and the designated side wall area of the heating device 100 is not in contact with the inner wall of the storage slot.
  • the designated side wall area refers to the area that needs to be used to heat the cartridge 200.
  • the head end of the heating device 100 is used for inserting the cartridge 200 so that part or all of the outer wall of the heating device 100 is wrapped by the cartridge 200, and the heating device 100 is used for heating the cartridge 200.
  • heating device 100 in this embodiment please further refer to the related description in the heating device 100 provided in the foregoing embodiment, which will not be repeated here.
  • the electronic cigarette 10 since the heating device 100 in the electronic cigarette 10 is hollow, the electronic cigarette 10 provided in this embodiment has higher characteristics than the prior art that relies on thick film printing technology for heating. The thermal efficiency is high, and the temperature rises and falls quickly.
  • FIG. 13 is a structural diagram of another heating element provided by an embodiment of the disclosure.
  • the embodiments of the present disclosure provide a heating unit (heating unit, which may also be referred to as a heating device), which is used for electronic cigarettes, and the heating body includes a heat conducting base 2100 (which may also be called a heat conductor) and a heating unit 2200 ( It can also be referred to as a heating body) and a power supply body (for example, an external circuit board 150).
  • the thermally conductive substrate 2100 includes a hollow cavity, which is a vacuum cavity; the heating part 2200 is attached to the thermally conductive substrate 2100; the power supply body and the heating part 2200 are electrically connected The connection is used to heat the heating part 2200.
  • the heat-conducting base 2100 is provided with a heat-generating part 2200, and the power supply body supplies power to the heat-generating part 2200.
  • the heat-generating part after power-on generates heat, and the heat is evenly dissipated outward through the heat-conducting base 2100.
  • the heat-conducting substrate 2100 adopts a hollow structure. Compared with a solid structure, the temperature of the heat-conducting substrate 2100 of the hollow structure can be increased by more than 50%, and the energy consumption of the heating element is reduced, which extends the standby time of the heating element and improves the user Experience.
  • the embodiment of the present disclosure vacuum-processes the hollow cavity of the heat-conducting substrate 2100, evacuates the air in the hollow cavity, and turns the hollow cavity into a vacuum cavity, so that the heat generated by the heating part 2200 is not transferred to the hollow cavity.
  • the heating element provided by the embodiments of the present disclosure has a fast rise and fall speed, a high utilization rate of heat energy, a long standby time, and a high user product experience.
  • the thermally conductive substrate 2100 may be a thermally conductive substrate 2100 made of thermally conductive insulating materials such as ceramics, glass, or the like, or a thermally conductive substrate 2100 made of metal whose outer surface is coated with an insulating material.
  • the thermally conductive base 2100 is a thermally conductive base 2100 made of ceramic material.
  • ceramics are made by crushing, mixing, molding and calcining. It has good thermal conductivity, high melting point, stable structure, convenient materials, and low price. It uses ceramics to make electronics.
  • the heat conducting base 2100 of the cigarette can accelerate the temperature rise and fall speed of the heat conducting base 2100, reduce the manufacturing cost of the electronic cigarette, and is beneficial to the stability of the heating element and the structure of the electronic cigarette.
  • the shape of the thermally conductive substrate 2100 may be a long strip or other shapes, which is not limited in the embodiment of the present disclosure.
  • the hollow inner cavity may be an inner lumen that coincides with the axis of the heat-conducting base 2100. The ratio between the volume of the hollow cavity and the volume of the heat conducting substrate 2100 can be set according to actual requirements.
  • the thermally conductive substrate 2100 includes a hollow tube 2300 and a sealing plug 2400, the hollow tube 2300 is provided with an opening 2500, and the sealing plug 2400 is disposed at the opening 2500 to seal the opening 2500 to form the internal thermal conductive substrate Vacuum cavity.
  • the heat-conducting base 2100 includes a hollow tube 2300 and a sealing plug 2400 that are matched with each other.
  • the air in the hollow tube 2300 is first evacuated from the opening 2500 of the hollow tube 2300, and then the sealing plug is used 2400 seals the opening 2500, thereby forming a vacuum cavity in the hollow tube 2300.
  • the heating part 2200 is arranged to be attached to the inner wall of the hollow cavity, that is, to be attached to the inner wall of the hollow tube 2300.
  • the heating part 2200 is arranged in contact with the inner wall of the hollow cavity, and the heat is dissipated from the inside to the outside through the heat conducting base 2100.
  • the heating part 2200 is arranged in close contact with the outer surface of the heat conducting base 2100.
  • the heating part 2200 is attached to the outer surface of the thermally conductive base 2100, a part of the heat generated by the heating part 2200 is directly radiated out through itself, and the other part is radiated outwardly through the thermally conductive base 2100.
  • the outer surface of the heating part 2200 can directly contact the cartridge and transfer a part of the heat to the cartridge, and the other part of the heat is evenly transferred to the cartridge through the heat-conducting substrate 2100.
  • the heat transfer efficiency is relatively high. high.
  • the above-mentioned heating part 2200 generally refers to a heating resistor that can generate heat after being energized, and the form or shape of the heating resistor is not limited in the embodiment of the present disclosure.
  • the resistance of the heating resistor can be set according to actual needs.
  • the heating part 2200 is a resistance wire wound on the outer surface of the heat conducting base 2100.
  • the resistance wire is used as the heating part 2200, and the resistance wire is wound on the outer surface of the thermally conductive base 2100 to make contact with the thermally conductive base 2100 so that the heat of the resistance wire is transferred to the cigarette of the electronic cigarette through the thermally conductive base 2100. bomb.
  • the heating part 2200 may also be a resistor sheet wrapped outside the heat conducting base 2100 or attached to the inner wall of the hollow cavity/hollow tube.
  • the heating part 2200 is a resistance layer 2600 printed on the thermally conductive substrate 2100.
  • the printed resistance layer 2600 is used as the heating part 2200, which can make the heating part 2200 better contact the heat conducting substrate 2100, so as to increase the heat diffusion speed and thus the temperature rise and fall speed.
  • the printed resistance layer 2600 has a simple structure and is convenient to manufacture. Specifically, the resistance layer 2600 can be printed on the inner surface of the thermally conductive substrate 2100, or printed on the inner wall of the hollow cavity, that is, printed on the inner wall of the hollow tube.
  • the resistance layer 2600 is a spiral resistance layer 2600 wound along the thermally conductive substrate 2100.
  • the resistance layer 2600 is arranged in a spiral shape, so that the resistance layer 2600 is evenly arranged on the heat conducting substrate 2100, so that the heat dissipation and propagation are more uniform and rapid, and the performance of the heating element and the electronic cigarette is improved.
  • the outer surface of the resistance layer 2600 is provided with a printed protection layer.
  • a printed protective layer is provided outside the resistance layer 2600 to protect the structure of the resistance layer 2600 from being damaged, thereby ensuring the normal working state of the entire heating element.
  • the outer surface of the resistance layer 2600 is provided with an anti-fouling layer.
  • an anti-fouling layer is provided on the outer surface of the resistance layer 2600 to prevent dirt from adhering to the outer surface of the resistance layer 600 and hinder heat transfer and dissipation, thereby ensuring the normal working state of the entire heating element.
  • the above heating element further includes a lead 120
  • the lead 120 includes a first lead 121 and a second lead 122
  • one end of the lead 120 (that is, the first lead 121 and the second lead 122) is connected to the heating part 2200. Soldering, the other end is electrically connected to the power supply body.
  • the first lead 121 is electrically connected to the heating part 2200 through the first welding part 2601
  • the second lead 122 is electrically connected to the heating part 2200 through the second welding part 2602.
  • the first welding portion 2601 and the second welding portion 2602 are arranged on the outer side wall of the thermally conductive base 2100 near the bottom, and are arranged symmetrically around the outer side wall of the thermally conductive base 2100, so as to realize the isolation arrangement of the first lead 121 and the second lead 122 to avoid A short circuit occurs between the first lead 121 and the second lead 122, which prolongs the service life of the heating element 100 and improves the safety of the heating element 100.
  • the lead 120 is used to electrically connect the heating part 2200 and the power supply body, and the structure is simple.
  • the lead 120 is connected to the heating element by welding, which can realize electrical connection and is simple and convenient to operate.
  • the present disclosure also provides an electronic cigarette, which includes the heating element described in any of the above optional implementations.
  • the temperature of the electronic cigarette using the above-mentioned heating element rises and falls rapidly, the heat utilization rate is high, and the overall machine performance is good.
  • the electronic cigarette also includes a cartridge, and the heating element is used for inserting into the cartridge.
  • the heating device 100 includes a heat conductor 130, a heating body 110, a lead 120 and a positioning member 140, wherein the heat conductor 130 has a conical head End 1301, the tip of the head end 1301 is used to insert an object to be heated (such as a cigarette bomb), and the positioning member 140 is inserted into the opening of the tail end 1302 of the heat conductor 130 to form a cavity inside the heat conductor 130, that is, the heat conductor 130 has a hollow structure.
  • the heating body 110 is a spiral heating wire, which is arranged in a cavity inside the heat conductor 130 and is wound on the first lead 121 of the lead 120.
  • the first lead 121 of the lead 120 and the spiral heating wire are close to the heat conductor 130
  • One end of the tip 1301 of the spiral heating wire is connected, and the other end of the spiral heating wire close to the tail end 1302 of the heat conductor 130 is connected to the second lead 122 of the lead 120, so that when it is connected to the external circuit board, the spiral heating wire is energized. Realize heat generation, and then heat the object to be heated through the heat conductor.
  • the positioning member 140 inserted into the thermal conductor 130 to form a cavity inside the thermal conductor 130 has a conical tip part and a cylindrical body part, wherein the conical tip part is used to be inserted into the thermal conductor 130 and the cylindrical body part is used To achieve an interference fit connection with the inner wall of the heat conductor 130.
  • the positioning member 140 has a first positioning portion 141 and a second positioning portion 142.
  • the first positioning portion 141 is a through hole located at the center of the positioning member 140 for passing the first lead 121 to connect with an external circuit board.
  • the second positioning portion 142 is a groove located on the side wall of the positioning member 140 for allowing the second lead to pass through to connect with the external circuit board.
  • the first positioning portion 141 and the second positioning portion 142 respectively used to allow the first lead 121 and the second lead 122 to pass through realize the isolation and fixation of the first lead 121 and the second lead 122, and avoid the first lead 121 and the second lead 122.
  • the possibility of a short circuit between the second leads 122 improves the working stability of the heating device 100 and extends the service life of the heating device 100.
  • the positioning member 140 is a cylindrical groove structure sleeved outside the tail end 1302 of the heat conductor 130, and is connected to the outer side wall of the heat conductor 130 through interference fit.
  • the positioning member 140 includes a first positioning portion 141 at the center of the bottom and a second positioning portion 142 at the bottom.
  • the first positioning portion 141 and the second positioning portion 142 are both through-hole structures to facilitate the first lead and the second Passage of leads.
  • the heating body 110 is a heating sheet structure, that is, a sheet heating body.
  • the bottom side of the sheet heating body is connected to the first lead 121 and the second lead 122, and the sheet heating body is provided with a linear opening A. It is located between the first lead 121 and the second lead 122 to avoid a short circuit between the first lead 121 and the second lead 122.
  • the heating body 110 is a heating rod structure formed by bending a sheet-like heating body, which has a first opening B and a second opening C symmetrically arranged, wherein the depth of the first opening B is greater than the second opening
  • the first lead 121 and the second lead 122 are respectively connected to the two sides of the first opening B, and the arrangement of the opening prevents the short circuit phenomenon of the first lead 121 and the second lead 122.
  • the heat conductor 130 has a conical head end and a closed tail end, and an internal hollow structure.
  • Two symmetrical positioning holes 131 arranged obliquely are opened on the side wall of the heat conductor 130 for allowing the first lead and the second lead to pass through to connect with the external circuit board.
  • a stop 160 is provided on the outside of the heat conductor 130 near the positioning hole 131 (that is, the position of the dividing line shown in D) to prevent the first lead and the second lead passing through the positioning hole on the heat conductor from being accidentally touched by the object to be heated The damage or looseness affects the use of heating devices.
  • the electronic cigarette 10 includes the above heating device 100, the cartridge 200, the casing 300 and the circuit board 150, wherein the heating device 100 is arranged inside the casing 300 and inserted into the cartridge 200, and the circuit board inside the casing 150 is connected to heat the cartridge 200.
  • the heating element 100 (also known as a heating device) includes a heat conducting base 2100 (also known as a heat conductor), a heating part 2200 (also known as a heating body), and a device for connecting the heating part 2200 with the power supply Lead 120.
  • the heat-conducting base 2100 includes a hollow tube 2300 and a sealing plug 2400.
  • the sealing plug 2400 is used to be inserted into the opening 2500 of the hollow tube 2300 to seal the hollow tube 2300 so that the heat-conducting base 2100 forms an internal hollow cavity. Before sealing the plug, the hollow tube is evacuated so that the hollow inner cavity formed is a vacuum cavity.
  • the heating part 2200 is attached to the outer surface of the heat conducting base 2100, and is electrically connected to the first lead 121 and the second lead 122 through the first welding part 2601 and the second welding part 2602, respectively.
  • the first welding part 2601 and the second welding part 2602 are arranged on the outer side wall of the thermally conductive base 2100 near the bottom, and are arranged symmetrically around the outer side wall of the thermally conductive base 2100.
  • the first lead 121 is welded to the first welding part 2601, and the second lead 122 Welded on the second welding part 2602 so as to be fixed on it at intervals to avoid short circuit.
  • the heating device, heating element and electronic cigarette provided by the present disclosure can jointly realize hollow heating by providing a heat conductor with a hollow structure/hollow cavity, a heating body sleeved in it or a heating part attached to it.
  • the above structure can radiate more energy from the radiating surface, has higher thermal efficiency, and can achieve rapid temperature rise and fall; through the cooperation of the positioning member and the heat conductor or the positioning of the positioning hole and the sealing plug, It realizes hollow heating, improves thermal efficiency, and further realizes rapid temperature rise and fall.
  • the heating device, heating element and electronic cigarette provided by the present disclosure have simple structure, easy manufacture, simple and convenient operation, and high user experience.

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Abstract

一种发热装置（100）、发热体（100）以及电子烟（10）。该发热装置（100）包括：发热本体（110）；与该发热本体（110）连接的引线（120），该引线（120）用于与外部电路板（150）连接；套设在该发热本体（110）上的导热体（130），该导热体（130）为中空结构，该导热体（130）的头端用于伸入待加热物中，以在该引线（120）通电时，通过该导热体（130）对该待加热物传热。该发热体（100）包括导热基体（2100）、发热部（2200）以及供电体，导热基体（2100）包括中空内腔，中空内腔为真空腔，发热部（2200）贴合该导热基体（2100）设置，供电体与发热部（2200）电连接，用于使发热部（2200）发热。该发热装置（100）、发热体（100）和电子烟（10）具有更高的热效率，能够实现快速升降温，待机时间长，用户产品体验高。

Description

发热装置、发热体及电子烟
相关申请的交叉引用
本申请要求于2019年7月22日提交中国专利局的申请号为2019106635006、名称为“发热装置及电子烟”的中国专利申请的优先权；以及
于2020年4月2日提交中国专利局的申请号为2020204707756、名称为“发热体以及电子烟”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及电子烟领域，具体而言，涉及一种发热装置、发热体及电子烟。
背景技术
目前市场上的电子烟主要分为烟油型电子烟和加热不燃烧电子烟。其中加热不燃烧电子烟是一种新型产业，加热不燃烧电子烟内部通过主机供电致发热装置发热，烘烤加热烟弹，其内部温度高达300-350℃。加热不燃烧电子烟的发热装置多采用发热条、发热片、发热棒或发热杯，具有无明火、无烟灰、焦油少、尼古丁量少等特点，对身体的伤害小，基本不存在二手烟危害，且具有真烟口感，能够达到健康替烟，轻松控烟，辅助戒烟等传统香烟无法实现的功效。发热片插入烟弹后，发热片易断裂，烟弹易松动，固定效果不佳。现有的发热棒温度升降速度较慢以及热能利用率较低，用户使用感较差。
发明内容
本公开实施例提供一种发热装置，所述发热装置包括：
发热本体(heating body)；
与所述发热本体连接的引线，所述引线用于与外部电路板连接；
套设在所述发热本体上的导热体，所述导热体为中空结构，所述导热体的头端用于伸入待加热物中，以在所述引线通电时，通过所述导热体对所述待加热物传热。
可选地，所述发热装置还包括定位件；所述定位件安装于所述导热体的尾端，用于与所述导热体配合形成一用于容纳所述发热本体的空腔。
可选地，所述定位件伸入所述导热体的尾端，以形成用于容纳所述发热本体的空腔；
或，所述导热体的尾端安装于所述定位件的内侧，以形成用于容纳所述发热本体的空腔。
可选地，所述定位件与所述导热体之间为过盈配合连接。
可选地，所述引线包括第一引线、第二引线，所述第一引线、所述第二引线与所述发热本体连接；
所述第一引线通过所述定位件上的第一定位部与所述外部电路板连接；
所述第二引线通过所述定位件上的第二定位部与所述外部电路板连接；
所述第一定位部与所述第二定位部相互隔离。
可选地，所述第一定位部为通孔，所述第二定位部为限位槽。
可选地，所述导热体的本体上开设有定位孔；
所述引线从具有空腔的所述导热体内部穿过所述定位孔至所述导热体的外部，与所述外部电路板连接。
可选地，所述导热体的头端呈针状，用于伸入所述待加热物。
可选地，所述发热本体为发热丝、发热片、发热棒中的任意一种。
本公开实施例还提供一种电子烟，所述电子烟包括前述的发热装置。
本公开实施例还提供了一种发热体(heating unit)，该发热体包括导热基体、发热部以及供电体，导热基体包括中空内腔，所述中空内腔为真空腔；发热部贴合所述导热基体设置；供电体与所述发热部电连接，用于使发热部发热。
可选地，所述导热基体包括中空管与密封塞，所述中空管上开设有开口，所述密封塞配置在所述开口处以密封所述开口。
可选地，所述发热部贴合所述中空内腔的内壁设置。
可选地，所述发热部贴合所述导热基体的外表面设置。
可选地，所述发热部为印刷在所述导热基体上的电阻层。
可选地，所述电阻层为沿所述导热基体绕设的螺旋状电阻层。
可选地，所述电阻层的外表面设置有印刷保护层。
可选地，所述电阻层的外表面设置有防污垢层。
可选地，上述发热体还包括引线，所述引线的一端与所述发热部焊接，另一端与供电体电连接。
可选地，所述导热基体为陶瓷材料制成的导热基体。
可选地，所述发热部为缠绕在所述导热基体外表面上的电阻丝。
本公开实施例还提供了一种电子烟，该电子烟包括前述的发热体。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本公开的某些实施例，因此不应被看作 是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本公开实施例提供的一种发热装置(又称为发热体)的示意图。
图2为本公开实施例提供的一种导热体与定位件的配合示意图。
图3为本公开实施例提供的一个实例中的发热装置的装配示意图。
图4为本公开实施例提供的一个实例中的定位件的示意图。
图5为本公开实施例提供的一个实例中的另一种定位件的示意图。
图6为本公开实施例提供的一个实例中的已装配完成的发热装置的示意图。
图7为本公开实施例提供的发热装置的一种发热本体的结构示意图。
图8为本公开实施例提供的发热装置的另一种发热本体的结构示意图。
图9为本公开实施例提供的发热装置的再一种发热本体的结构示意图。
图10为图9所述的发热本体在另一个视角下的结构示意图。
图11为本公开实施例提供的另一种发热装置的示意图。
图12为本公开实施例提供的一种电子烟的示意图。
图13为本公开实施例提供的另一种发热体的结构图。
图标：10-电子烟；100-发热装置/发热体；外部电路板-150；110-发热本体；120-引线；121-第一引线；122-第二引线；130-导热体；头端-1301；尾端-1302；131-定位孔；140-定位件；141-第一定位部；142-第二定位部；阻挡件-160；200-烟弹；300-壳体；2100-导热基体；2200-发热部；2300-中空管；2400-密封塞；2500-开口；2600-电阻层；2601-第一焊接部；2602-第二焊接部。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行描述。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行描述。显然，所描述的实施例仅仅是本公开的一部分实施例，而不是全部的实施例。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。同时，在本公开的描述中，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
在本公开的描述中，还需要说明的是，除非另有明确的规定和限定，若出现术语“设置”、“安装”、“相连”、“连接”等应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也 可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。
需要说明的是，在不冲突的情况下，本公开的实施例中的特征可以相互结合。
本公开实施例所提供的发热装置、发热体及电子烟，温度升降速度快且热能利用率高，改善了现有技术中的电子烟升降温速度慢、热效率低的问题。
请参阅图1，图1为本公开实施例提供的一种发热装置100的结构示意图。该发热装置100可以应用于需要进行加热的场景或设备中，例如，该发热装置100可应用于电子烟中。
如图1所示，发热装置100(也可称为发热体)包括发热本体110(heating body，也可称为发热部)、引线120、导热体130(也可以称为导热基体)。
导热体130套设在发热本体110上，发热本体110与引线120连接。引线120用于与外部电路板150连接。外部电路板150用于对发热装置100进行供电。外部电路板150上可以安装电源。外部电路板150也可以接入电源。
本实施例中，导热体130为中空结构。中空结构的导热体130内部为不完全填充。不完全填充是指导热体130内部未被实体完全填充。
作为一种实施方式，导热体130内部可以仅有发热本体110以及部分引线120。发热本体110与导热体130的内壁之间可以留有一定间隙，使得导热体130内部为不完全填充。
其中，导热体130可包括头端1301和尾端1302。导热体130的头端1301用于伸入待加热物中，以在引线120通电时，通过导热体130对待加热物传热。导热体130的尾端1302用于固定引线120。
可选地，导热体130的材料可以是陶瓷，也可以是金属。
发明人经过研究发现，在现有技术中，电子烟是依靠发热条、发热棒或发热杯的介质完成加热的。对于现有技术中电子烟的发热条、发热棒，通常是采用厚膜印刷技术将发热浆料按照一定的厚度及形状，印刷在陶瓷基板上以形成发热棒或发热条的。最终形成的发热棒或发热条实际上是一种表面涂有发热浆料的实心发热结构，升降温速度慢、热效率低。
而通过本公开实施例提供的上述发热装置100，由于导热体130套设在发热本体110上，且导热体130为中空结构。通过中空结构的导热体130及其内部的发热本体110可以共同实现空心加热。空心加热与实心加热的区别在于，内部结构的不同导致了加热能力的不同，对于同样功率的空心加热结构和实心加热结构，在同样的供电电压下，空心加热结构能够从辐射面辐射的能量更多，空心加热结构的热效率更高。在一个实例中，空心加热 结构辐射的能量超过实心加热结构达百分之十以上。
也即，通过上述发热装置，由于导热体套设在发热本体上，且导热体为中空结构。通过中空的导热体及其内部的发热本体可共同实现空心加热，相较于现有技术，在引线通电时，上述结构能够从辐射面辐射的能量更多，热效率更高，可以实现快速升降温。
换言之，本公开实施例提供的上述发热装置100相较于现有技术，不仅具有更高的热效率，还更为节能。若以相同体积的上述发热装置100和现有技术中的发热条进行比较，将二者加热到相同温度后进行自然冷却，根据比热容公式可以得知，放出相同温度热量时由于上述发热装置100的质量可以更小，上述发热装置100的温度降的更快，用时更短，以此原理可以实现快速升降温。
可选地，在本实施例中，导热体130可以是圆柱筒状的中空结构。导热体130的头端1301可以是封闭的，尾端1302可以设开口。
导热体130的头端1301远离尾端1302处的直径小于导热体130的柱体部分的直径。
作为一种实施方式，导热体130的头端可以呈针状或圆台状，作为待加热物的插入端。以此将更便于导热体130插入到待加热物中，可以减小插入过程中的阻力。
如图1所示，发热装置100还可以包括定位件140(密封塞)。定位件140可安装于导热体130的尾端1302的开口处。定位件140用于与导热体130配合形成一用于容纳发热本体110的空腔。与发热本体110连接的引线120可以通过定位件140与外部电路板150连接。
通过上述结构，发热装置中的定位件可以与导热体配合形成一空腔以容纳发热本体，利于实现空心加热，以提升热效率。
考虑到耐用性及安全性，定位件140的材料是绝缘且耐高温的材料，定位件140的材料可以是但不限于陶瓷。
通过在导热体130尾端1302的开口处设置定位件140，有利于对引线120进行固定，避免出现短路，还有利于由导热体130和定位件140共同形成用于容纳发热本体110的空腔，得到可实现空心加热的结构，从而提升热效率。
作为一种实施方式，定位件140的第一端可伸入导热体130的尾端1302，以形成用于容纳所述发热本体110的空腔。定位件140的第二端可以伸入导热体130的尾端，也可以裸露于导热体130外部。
其中，将定位件140部分或全部伸入至导热体130的尾端1302，有利于增大导热体130的外壁与待加热物之间的接触面积。在上述实施方式中，由于定位件140是内设于导热体130中的，可以减少对于导热体130外壁的加工占用面积，若待加热物是固体，导热体130可以允许有较大的区域插入到固态的待加热物中，且极端情况下甚至可以使整个导热体130 完全插入到固态待加热物中，使其整体外壁与固态待加热物接触，这不仅有利于提升加热效率，还更便于进行固态待加热物的安装。
作为另一种实施方式，如图2所示，导热体130的尾端1301安装于定位件140的内侧，以形成用于容纳发热本体110的空腔，该空腔可以表示为图2中的导热体130内部的虚线区域。
定位件140的内壁形状可以与导热体130的外壁形状契合，以使导热体130的尾端1302能够安装在定位件140的内侧，并形成用于容纳发热本体110的空腔。
其中，在上述实施方式中，将定位件140套设于导热体130的尾端1302上，将更有利于加工和组装，更便于对发热装置100的各个组件进行更换。另一方面，对于同一体积的导热体130而言，将定位件140套设在导热体130的尾端1302可以使导热体130内部形成体积更大的空腔。
通过上述结构，不论定位件是安装在导热体内部还是导热体外部，都可以与中空的导热体配合形成用于容纳发热本体的空腔。其中，若将定位件固定在导热体内，可以增大导热体的外壁与待加热物之间的接触面积，例如提升加热效率。若将定位件安装在导热体外，即套设在导热体尾端上，将更有利于对发热装置进行组装，更便于对发热装置的各个组件进行更换。此外，对于同一体积的导热体而言，将定位件设在导热体的尾端上可以形成体积更大的空腔。
为了提高传热效率，本领域技术人员可以根据实际需要尽可能的提高该空腔的密闭性，提升密闭性的方式包括但不限于涂密封浆料、增设密封垫。
需要说明的是，本实施例中提到的发热装置100中的任一组件都具有耐高温特性。
可选地，定位件140与导热体130之间可以是过盈配合连接，过盈配合连接是依靠轴与孔的过盈值，装配后使零件表面间产生弹性压力从而获得紧固连接的一种连接方式。对应上述两种实施方式中的定位件140，定位件140的外壁与导热体130的内壁之间采用过盈配合连接，或定位件140的内壁与导热体130的外壁之间采用过盈配合连接。
通过上述实现方式，定位件与导热体之间采用过盈配合连接，可以使得整个发热装置的结构更为紧凑，致密性更好，且可以避免使用过多的零件进行固定，便于生产和安装。其中，在定位件140与导热体130之间采用同轴过盈配合连接可以使得发热装置100的结构更为紧凑，致密性更好，增大了发热装置100的气密性，且无需使用过多的连接件实现连接。
可选地，如图3所示，与发热本体110连接的引线120可包括第一引线121、第二引线122。第一引线121、第二引线122均与发热本体110连接。发热本体110可视为第一引线121与第二引线122之间的特殊电阻，发热本体110具有通电即发热的功能。在第一引线 121、第二引线122与外部电路板150通电时，位于导热体130内部的发热本体110发热。
定位件140上可以设置第一定位部141、第二定位部142，第一定位部141、第二定位部142分别用于安装第一引线121、第二引线122。
其中，第一引线121通过定位件140上的第一定位部141与外部电路板150连接，第二引线122通过定位件140上的第二定位部142与外部电路板150连接。第一定位部141与第二定位部142相互隔离。
通过定位件140上相互隔离的第一定位部141、第二定位部142能够分别对第一引线121、第二引线122进行隔离、固定，避免第一引线121、第二引线122之间发生短路，延长了发热装置100的使用寿命，提高了发热装置100的安全性。相对于现有技术中直接将导线焊接在实心陶瓷体上的方式，通过定位件140上的两个定位部分别对两根引线120进行隔离、固定，有利于提升整个发热装置100的结构稳定性，降低引线120出现松动的概率。
作为一种实施方式，第一定位部141、第二定位部142可以是通孔。第一引线121、第二引线122分别通过定位件140上的两个通孔与外部电路板连接。
作为另一种实施方式，若定位件140内设与导热体130中，第一定位部141、第二定位部142可以是限位槽。第一引线121、第二引线122可以沿着限位槽伸出导热体130外。
作为再一种实施方式，若定位件140内设与导热体130中，第一定位部141可以是通孔，第二定位部142可以是限位槽，第一引线121穿过定位件140上的通孔与外部电路板150连接，第二引线122沿着限位槽伸出导热体130外，第二引线122用于连接外部电路板150。通过上述结构，有利于对与呈指定螺旋状发热本体连接的两根引线进行固定，该指定螺旋状发热本体是指以一根引线为旋转中心而绕设形成的螺旋状发热件。
在一个实例中，如图4所示，定位件140的中心位置开设有一通孔作为第一定位部141，定位件140的侧壁上开设有一凹槽作为第二定位部142。
在一个实例中，如图5所示，定位件140为套设在导热体130的尾端1302上的定位件，其底部设有两通孔，其中，位于中心位置的一通孔第一定位部141，另一通孔作为第二定位部142。
其中，将第一定位部141设在定位件140的中心将更有利于对第一引线121的固定，避免第一引线121断裂。
通过上述定位件140以对引线120进行固定，有利于在对发热装置100整体进行插拔或者安装时，减小对于引线120的损伤，提升了整体结构的稳定性。
作为一种对发热装置100进行组装的方式，可以先将发热本体110与引线120连接，再将引线120穿过定位件140进行隔离、固定，然后将发热本体110、部分引线120以及 定位件140伸入导热体130中进行固定。一种装配完成的发热装置100如图6所示，图6中裸露出的部分引线120用于连接外部电路板。相较于现有技术中依赖厚膜印刷技术制作实心发热结构的方式，厚膜印刷技术对工艺有更高的要求，加工难度大，而本公开实施例提供的发热装置100装配更为方便，组装过程更简单，能够降低对于厚膜印刷技术的工艺依赖。
可选地，发热装置100中的发热本体110可以是发热丝、发热片、发热棒中的任意一种。
在一种实施方式中，如图7所示，发热本体110是发热丝。发热丝可以绕设在部分引线120上，形成螺旋状的发热本体110。
其中，螺旋状的发热本体110可以间隔均匀地绕设在第一引线121上，发热本体110的两端分别与第一引线121、第二引线122连接，以此有利于实现均匀发热。
在其他实施例中，发热本体110可以不绕设在第一引线121上，发热本体110的两端可以直接与引线120连接。例如，发热丝可以是任意弯曲形状的发热丝，只要发热丝的两端之间存在一定间隙以避免出现短路即可。
另一种实施方式中，如图8所示，发热本体110是发热片。
若发热本体110是发热片，发热片上设有至少一个开口，开口设于两根引线120之间。发热片上的开口可以是如图8中“A”处所示的线形开口，也可以是其他不规则形状的开口。通过发热片上的开口能够避免出现短路现象。提升发热装置100的使用寿命。
再一种实施方式中，如图9和图10所示，发热本体110是由曲面状的发热片形成的发热棒。其中，图9、图10分别是发热棒在两个视角下的示意图。
曲面状的发热片上设有第一开口(参见图9中的“B”)、第二开口(参见图10中的“C”)，第一开口的深度大于第二开口的深度，第一开口可以沿着发热棒的侧壁设置，第一开口的延伸方向与发热棒的延伸方向相同。由于第一开口的存在，发热棒中与引线120连接的两侧互不接触，可以避免发热棒出现短路。
若以前述发热棒结构作为发热装置100中的发热本体110，由于发热棒内部是空心的，可以增大热效率。其中，第一开口与第二开口的位置可以是对称设置的。
可选地，在本实施例中，引线120的材料可以是但不限于镍丝、镍铜丝。
可选地，在本实施例中，引线120上可以套设绝缘层。例如，可以对与定位件140接触的部分引线120、伸出导热体130外的部分引线120设置绝缘层。
在一些实施例中，可选地，上述实施例中的发热装置100可省略定位件140，通过发热装置100中的导热体130本体对引线120进行固定。即使省略了定位件，在引线通电时，导热体自身具备的空腔结构以及内部的发热丝也可以实现空心加热，相较于现有技术，具 有更高的热效率，可以实现快速升降温。
本实施例中，如图11所示，导热体130的本体上开设有定位孔131。导热体130为中空结构，且导热体130自身可以形成用于容纳发热本体110的空腔。
其中，定位孔131可以开设在导热体130的尾端。与发热本体110连接的引线120可以从具有空腔的导热体130内部穿过定位孔131至导热体130的外部，与外部电路板连接。
可选地，引线120上可以设置绝缘层。
作为一种实施方式，定位孔131可以开设在导热体130的尾端的侧壁上，如图11所示。
定位孔131的延伸方向可以与导热体130的延伸方向呈指定角度，指定角度可以是30°，也可以是45°，还可以是60°，还可以是85°，本领域技术人员可以根据实际需要对指定角度进行设置。
在一个实例中，在导热体130的侧壁上开设有两个斜向设置的定位孔131，两根引线120可以分别通过两个定位孔131与外部电路板连接。
为了提供更多的导热体130外壁区域以插入待加热物，本领域技术人员可以根据实际需要延长导热体130的长度。
为了避免在导热体130插入待加热物的过程中，导热体130侧壁上的引线120被待加热物误触而受损或松动，可以在导热体130的指定位置设置阻挡件160，指定位置可以是导热体130上靠近尾端1302部分的位置，如图11中的“D”处指示的分界线位置。阻挡件可以是直接设在导热体130上的，也可以是设置在外部安装位置的，例如可以设置在电子烟中用于安装发热装置100处。
作为另一种实施方式，定位孔131可以开设在导热体130的尾端底部，可以避免对待加热物的插入形成阻碍。
本实施例中，若导热体130的材料是金属，具有导电性，则需要在定位孔131处作绝缘处理，以避免发生短路。若导热体130的材料不具备导电性，定位孔131处可以作绝缘处理，也可以不作绝缘处理。
通过上述发热装置100，中空结构的导热体130可以与导热体130内部的发热本体110共同形成空心发热结构，相较于现有技术中依赖厚膜印刷技术得到发热结构的方式，具有较高的热效率，升降温速度快。
本公开实施例还提供一种电子烟10，该电子烟10可为加热不燃烧型电子烟10。该电子烟10包括前述实施例中的发热装置100，还可以包括烟弹200，发热装置100为内部中空的加热装置，发热装置100能够对插入电子烟10内的烟弹200进行加热。
如图12所示，电子烟10可以包括壳体300，壳体300内部可以设置用于安装发热装置100的底座，壳体300内部还可以设置电路板150。
发热装置100被安装在电子烟10的底座上。电路板可以用于向发热装置100供电。
其中，电子烟10的本体上可以开设一个用于容纳烟弹200的置物槽，作为用于安装发热装置100的底座。
发热装置100安装于置物槽的底部，且发热装置100的指定侧壁区域未与置物槽的内壁接触，该指定侧壁区域是指需要用于对烟弹200进行加热的区域。
发热装置100的头端用于插入烟弹200，使得发热装置100的部分或全部外壁被烟弹200包裹，发热装置100用于对烟弹200进行加热。
关于本实施例中的发热装置100的其他细节，请进一步参考前述实施例提供的发热装置100中的相关描述，在此不再赘述。
通过前述的电子烟10结构，由于电子烟10内的发热装置100内部是中空的，相较于现有技术中依赖厚膜印刷技术进行加热的方式，本实施例提供的电子烟10具有更高的热效率，且升降温速度快。
请参考图13，图13为本公开实施例提供的另一种发热体的结构图。本公开实施例提供了一种发热体(heating unit，也可以称为发热装置)，该发热体用于电子烟，该发热体包括导热基体2100(也可以称为导热体)、发热部2200(也可以称为发热本体)以及供电体(例如外部电路板150)，导热基体2100包括中空内腔，中空内腔为真空腔；发热部2200贴合导热基体2100设置；供电体与发热部2200电连接，用于使发热部2200发热。
在上述实现过程中，导热基体2100上设置有发热部2200，供电体为发热部2200供电，通电后的发热部产生热量，并通过导热基体2100向外均匀散发热量。其中，导热基体2100采用中空结构，相比于实心结构，中空结构的导热基体2100温度升降的速度可提升50％以上，且发热体的耗能降低，延长了发热体的待机时间，提高了用户的体验。进一步地，本公开实施例对导热基体2100的中空内腔作真空处理，将中空内腔内的空气抽空，使中空内腔变为真空内腔，使得发热部2200产生的热量不会传递到中空内腔内，使热量更多地向外传递给烟弹，减少热量损失，延长了发热体的待机时间，也提高了发热体温度升降的速度。综上，本公开实施例提供的发热体温度升降的速度快，热能利用率高，待机时间长，用户产品体验高。
需要说明的是，上述导热基体2100可以是由陶瓷、玻璃等导热绝缘材料制成的导热基体2100，也可以是由外表面涂有绝缘材料的金属制成的导热基体2100。在一种可能的实施例中，导热基体2100是由陶瓷材料制成的导热基体2100。陶瓷作为以天然粘土以及各种天然矿物为主要原料经过粉碎混炼、成型和煅烧制得的材料的制品，其导热性能好，熔点高，结构稳定，且取材方便，价格低廉，采用陶瓷制作电子烟的导热基体2100，可加快导热基体2100的温度升降速度，降低电子烟制作成本，有利于发热体以及电子烟结构的稳定 性。
另外，导热基体2100的形状可以是长条状，也可以是其他形状，本公开实施例对此不作限定。当导热基体2100为长条状时，中空内腔可以是与导热基体2100轴心重合的内管腔。中空内腔的容积与导热基体2100的体积之间的比例，可根据实际需求进行设定。
在一种可能的实现方式中，导热基体2100包括中空管2300与密封塞2400，中空管2300上开设有开口2500，密封塞2400配置在开口2500处以密封开口2500，以形成导热基体内部的真空空腔。
在上述实现过程中，导热基体2100包括相互配合的中空管2300与密封塞2400，在组装发热体时，首先从中空管2300的开口2500处抽空中空管2300内的空气，然后使用密封塞2400密封该开口2500，进而在中空管2300内形成真空腔。
在一种可能的实现方式中，发热部2200贴合中空内腔的内壁设置，即贴合中空管2300的内壁设置。
在上述实现过程中，发热部2200贴合中空内腔的内壁设置，将热量通过导热基体2100从内而外散发。
在一种可能的实现方式中，发热部2200贴合导热基体2100的外表面设置。
在上述实现过程中，发热部2200贴合导热基体2100的外表面设置，发热部2200产生的热量一部分直接通过自身向外散发出去，另一部分则通过导热基体2100向外散发。当发热体插入电子烟的烟弹内时，发热部2200的外表面能够直接与烟弹接触向烟弹传递一部分热量，另一部分热量则通过导热基体2100均匀地传递给烟弹，热传递效率较高。
上述发热部2200一般指通电后可发热的发热电阻，发热电阻的形态或形状本公开实施例中不作限定。其中发热电阻的阻值可根据实际需求进行设定。
在一种可能的实现方式中，发热部2200为缠绕在导热基体2100外表面上的电阻丝。
在上述实现过程中，采用电阻丝作为发热部2200，并将电阻丝缠绕在导热基体2100的外表面与导热基体2100贴合接触，以便使电阻丝的热量通过导热基体2100传递给电子烟的烟弹。
在一种可能的实施例中，发热部2200还可以是包裹在导热基体2100外或贴合中空内腔/中空管的内壁设置的电阻片。
在一种可能的实现方式中，发热部2200为印刷在导热基体2100上的电阻层2600。
在上述实现过程中，采用印刷电阻层2600作为发热部2200，能够使发热部2200与导热基体2100更好的接触，以提高热量的扩散速度，进而提高温度的升降速度。印刷电阻层2600结构简单，制作方便。具体地，电阻层2600可印刷在导热基体2100的内表面，也可印刷在中空内腔的内壁上，即印刷在中空管的内壁上。
在一种可能的实现方式中，电阻层2600为沿导热基体2100绕设的螺旋状电阻层2600。
在上述实现过程中，将电阻层2600设置为螺旋状，可使得电阻层2600均匀设置在导热基体2100上，使得热量的散发与传播更加均匀迅速，进而提高发热体以及电子烟的性能。
在一种可能的实现方式中，电阻层2600的外表面设置有印刷保护层。
在上述实现过程中，在电阻层2600外设置印刷保护层可保护电阻层2600的结构不被破坏，进而保证整个发热体的正常工作状态。
在一种可能的实现方式中，电阻层2600的外表面设置有防污垢层。
在上述实现过程中，在电阻层2600的外表面设置防污垢层，可防止污垢附着在电阻层600外表面而阻碍热量的向外传递散发，进而保证整个发热体的正常工作状态。
在一种可能的实现方式中，上述发热体还包括引线120，引线120包括第一引线121和第二引线122，引线120(即第一引线121和第二引线122)的一端与发热部2200焊接，另一端与供电体电连接。其中，第一引线121通过第一焊接部2601与发热部2200电连接，第二引线122通过第二焊接部2602与发热部2200电连接。其中第一焊接部2601和第二焊接部2602设置于导热基体2100靠近底部的外侧壁，且围绕导热基体2100外侧壁间隔对称设置，进而实现第一引线121和第二引线122的隔离设置，避免第一引线121、第二引线122之间发生短路，延长了发热体100的使用寿命，提高了发热体100的安全性。
在上述实现过程中，采用引线120电连接发热部2200与供电体，结构简单。引线120采用焊接与发热体连接，焊接可实现电连接且操作简单方便。
第二方面，本公开还提供了一种电子烟，该电子烟包括上述任一可选的实现方式所述的发热体。
在上述实现过程中，采用上述发热体的电子烟的温度升降迅速，热量利用率高，整机性能好。进一步地，该电子烟还包括烟弹，上述发热体用于插入烟弹内。
在一些实施例中：
请参考图1、图3-4、图6-7：发热装置(又称发热体)100包括导热体130、发热本体110、引线120和定位件140，其中导热体130具有呈圆锥形的头端1301，头端1301的尖端部用于插入待加热物(例如烟弹)，导热体130的尾端1302的开口处插入定位件140，以形成导热体130内部的空腔，即，导热体130具有中空结构。发热本体110为螺旋状发热丝，设置在导热体130内部的空腔中，且绕设在引线120中的第一引线121上，引线120的第一引线121与螺旋状发热丝靠近导热体130的头端1301的一端连接，螺旋状发热丝靠近导热体130的尾端1302的另一端与引线120的第二引线122连接，以便在与外部电路板连接通电时，螺旋状发热丝因通电而实现发热，继而通过导热体对待加热物进行加热。
进一步地，插入导热体130以使导热体130内部形成空腔的定位件140具有圆锥状尖 端部分和圆柱形主体部分，其中圆锥状尖端部分用于插入导热体130内部，而圆柱形主体部分用于与导热体130内侧壁实现过盈配合连接。定位件140具有第一定位部141和第二定位部142，其中第一定位部141是位于定位件140中心位置的通孔，用于使第一引线121穿过以与外部电路板连接，第二定位部142是位于定位件140侧壁的凹槽，用于使第二引线穿过以与外部电路板连接。分别用于使第一引线121和第二引线122穿过的第一定位部141和第二定位部142实现了对第一引线121和第二引线122的隔离固定，避免了第一引线121和第二引线122之间发生短路的可能性，提高了发热装置100的工作稳定性以及延长了发热装置100的使用寿命。
请参考图2和图5：定位件140为套设在导热体130的尾端1302外部的圆柱形凹槽结构，并通过过盈配合实现与导热体130外侧壁的连接。定位件140包括位于底部中心位置的第一定位部141和位于底部的第二定位部142，其中第一定位部141和第二定位部142均为通孔结构，以方便第一引线和第二引线的通过。
请参考图8：发热本体110为发热片结构，即为片状发热本体，片状发热本体的底侧连接第一引线121和第二引线122，其中片状发热本体上设有线形开口A，位于第一引线121和第二引线122之间，以避免第一引线121和第二引线122的短路现象。
请参考图9-10：发热本体110为片状发热本体弯曲形成的发热棒结构，其上具有对称设置的第一开口B和第二开口C，其中，第一开口B的深度大于第二开口C的深度，且贯穿整个发热棒，第一引线121与第二引线122分别连接于第一开口B的两侧，该开口的设置以避免了第一引线121和第二引线122的短路现象。
请参考图11：导热体130具有呈圆锥形的头端和封闭的尾端，以及内部中空结构。导热体130的侧壁上开设有两个对称的斜向设置的定位孔131，用于使第一引线和第二引线穿过以与外部电路板连接。导热体130外侧靠近定位孔131的位置处(即D所示分界线位置)设置有阻挡件160，以避免导热体上从定位孔穿出的第一引线和第二引线被待加热物误触而受损或松动，影响发热装置的使用。
请参考图12：电子烟10包括上述发热装置100、烟弹200、壳体300以及电路板150，其中发热装置100设置在壳体300内部并插入烟弹200中，与壳体内部的电路板150连接，以实现对烟弹200的加热。
请参考图13：发热体100(又称为发热装置)包括导热基体2100(又称为导热体)、发热部2200(又称为发热本体)、用于与将发热部2200与供电体连接的引线120。导热基体2100包括中空管2300和密封塞2400，其中密封塞2400用于插入中空管2300的开口2500中，以密封中空管2300使导热基体2100形成内部的中空内腔，其中在塞入密封塞之前，对中空管进行抽真空，因而所形成的中空内腔为真空腔。发热部2200贴合设置于导热基体 2100的外表面，通过第一焊接部2601和第二焊接部2602分别与第一引线121和第二引线122电连接。第一焊接部2601和第二焊接部2602设置于导热基体2100靠近底部的外侧壁，且围绕导热基体2100外侧壁间隔对称设置，第一引线121焊接在第一焊接部2601上，第二引线122焊接在第二焊接部2602上，从而间隔地固定在其上，避免短路现象。
以上所述仅为本公开的实施例而已，并不用于限制本公开的保护范围，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应所述以权利要求的保护范围为准。
工业实用性
本公开提供的发热装置、发热体和电子烟，通过提供具有中空结构/中空内腔的导热体，套设于其中的发热本体或贴设于其上的发热部，能够共同实现空心加热，相较于现有技术，在引线通电时，上述结构能够从辐射面辐射的能量更多，热效率更高，可以实现快速升降温；通过定位件与导热体的配合或定位孔、密封塞的设置，实现空心加热，提升了热效率，进一步实现了快速升降温。且本公开提供的发热装置、发热体和电子烟结构简单，易制造，操作简单方便、用户体验度高。

Claims (19)

  1. 一种发热装置，其特征在于，所述发热装置包括：
    发热本体；
    与所述发热本体连接的引线，所述引线配置成用于与外部电路板连接；
    套设在所述发热本体上的导热体，所述导热体为中空结构，所述导热体的头端配置成用于伸入待加热物中，以在所述引线通电时，通过所述导热体对所述待加热物传热。
  2. 根据权利要求1所述的发热装置，其特征在于，所述发热装置还包括定位件；
    所述定位件安装于所述导热体的尾端，用于与所述导热体配合形成一配置成容纳所述发热本体的空腔。
  3. 根据权利要求2所述的发热装置，其特征在于，所述定位件伸入所述导热体的尾端，以形成配置成容纳所述发热本体的空腔；
    或，所述导热体的尾端安装于所述定位件的内侧，以形成配置成容纳所述发热本体的空腔。
  4. 根据权利要求2所述的发热装置，其特征在于，所述定位件与所述导热体之间为过盈配合连接。
  5. 根据权利要求2-4中任一项所述的发热装置，其特征在于，所述引线包括第一引线、第二引线，所述第一引线、所述第二引线与所述发热本体连接；
    所述第一引线通过所述定位件上的第一定位部与所述外部电路板连接；
    所述第二引线通过所述定位件上的第二定位部与所述外部电路板连接；
    所述第一定位部与所述第二定位部相互隔离。
  6. 根据权利要求5所述的发热装置，其特征在于，所述第一定位部为通孔，所述第二定位部为限位槽。
  7. 根据权利要求1所述的发热装置，其特征在于，所述导热体的本体上开设有定位孔；
    所述引线从具有空腔的所述导热体内部穿过所述定位孔至所述导热体的外部，与所述外部电路板连接。
  8. 根据权利要求1-7任一项所述的发热装置，其特征在于，所述导热体的头端呈针状，用于伸入所述待加热物。
  9. 根据权利要求1-7任一项所述的发热装置，其特征在于，所述发热本体为发热丝、发热片、发热棒中的任意一种。
  10. 一种发热体，其特征在于，包括：
    导热基体，包括中空内腔，所述中空内腔为真空腔；
    发热部，贴合所述导热基体设置；
    供电体，与所述发热部电连接，用于使发热部发热。
  11. 根据权利要求10所述的发热体，其特征在于，所述导热基体包括中空管与密封塞，所述中空管上开设有开口，所述密封塞配置在所述开口处以密封所述开口。
  12. 根据权利要求10-11中任一项所述的发热体，其特征在于，所述发热部贴合所述中空内腔的内壁设置。
  13. 根据权利要求10-11中任一项所述的发热体，其特征在于，所述发热部贴合所述导热基体的外表面设置。
  14. 根据权利要求11-13中任一项所述的发热体，其特征在于，所述发热部为印刷在所述导热基体上的电阻层。
  15. 根据权利要求14所述的发热体，其特征在于，所述电阻层为沿所述导热基体绕设的螺旋状电阻层。
  16. 根据权利要求14或15所述的发热体，其特征在于，所述电阻层的外表面设置有印刷保护层。
  17. 根据权利要求14或15所述的发热体，其特征在于，所述电阻层的外表面设置有防污垢层。
  18. 根据权利要求10-17中任一项所述的发热体，其特征在于，所述导热基体为陶瓷材料制成的导热基体。
  19. 一种电子烟，其特征在于，包括权利要求1-9中任一项所述的发热装置或权利要求10-18中任一项所述的发热体。
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