EP4190191A1 - Corps de génération de chaleur, ensemble de corps de génération de chaleur et dispositif de chauffage - Google Patents

Corps de génération de chaleur, ensemble de corps de génération de chaleur et dispositif de chauffage Download PDF

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Publication number
EP4190191A1
EP4190191A1 EP21873893.8A EP21873893A EP4190191A1 EP 4190191 A1 EP4190191 A1 EP 4190191A1 EP 21873893 A EP21873893 A EP 21873893A EP 4190191 A1 EP4190191 A1 EP 4190191A1
Authority
EP
European Patent Office
Prior art keywords
heat generating
electrode
temperature measuring
temperature
area
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP21873893.8A
Other languages
German (de)
English (en)
Inventor
Hengheng DOU
Guoqin HU
Riming Fang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Maishi Technology Co Ltd
Original Assignee
Shenzhen Merit Technology Co Ltd
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
Application filed by Shenzhen Merit Technology Co Ltd filed Critical Shenzhen Merit Technology Co Ltd
Publication of EP4190191A1 publication Critical patent/EP4190191A1/fr
Pending legal-status Critical Current

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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
    • 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
    • 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
    • A24F40/50—Control or monitoring
    • 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
    • A24F40/50—Control or monitoring
    • A24F40/53—Monitoring, e.g. fault detection
    • 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
    • A24F40/50—Control or monitoring
    • A24F40/57—Temperature control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0019—Circuit arrangements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • 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
    • A24F40/20—Devices using solid 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
    • A24F40/50—Control or monitoring
    • A24F40/51—Arrangement of sensors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the present application relates generally to the technical field of heat-not-burn cigarette devices, and more particularly, to a heat generating body, a heat generating assembly and a heating device.
  • a heat-not-burn cigarette device mainly bakes tobacco at low a temperature ranging from 200 °C to 400 °C, so as to produce smoke without a large number of harmful substances brought by pyrolysis.
  • the heat-not-burn cigarette device mainly generates heat through a heat generating body to heat tobacco or a cartridge.
  • a temperature is prone to a large deviation from a planned temperature, resulting in a mismatch with a baking temperature of the tobacco or cartridge and poor smoking experience.
  • a heat generating body including:
  • the heat generating circuit and the temperature measuring circuit are arranged independently of each other, and the temperature measuring part of the heat generating body is arranged in the high-temperature area of the heat generating area, so that the temperature measuring part can more accurately reflect an overall temperature of the heat generating body, so as to control a temperature in an initial heating stage more accurately, and the deviation between an actual temperature and a planned temperature in the initial heating stage is smaller.
  • the high-temperature area and the electrode arrangement area are arranged spaced apart, and the temperature measuring electrode extends from the heat generating area to the electrode arrangement area; or the high-temperature area is arranged adjacent to the electrode arrangement area, and the temperature measuring electrode is entirely arranged in the electrode arrangement area.
  • the base body is in a shape of a column or a strip sheet
  • the electrode arrangement area and the heat generating area are arranged in a length direction of the base body
  • the ratio of the length of the high-temperature area in the length direction of the base body to the sum of lengths of the heat generating area and the electrode arrangement area in the length direction of the base body is 1: (2 to 5).
  • the ratio of the length of the high-temperature area in the length direction of the base body to the length of the heat generating area in the length direction of the base body is 1: (5 to 4).
  • the heat generating electrode includes a first electrode and a second electrode spaced from the first electrode
  • the temperature measuring electrode includes a third electrode and a fourth electrode spaced from the third electrode, the first electrode, the second electrode, the third electrode and the fourth electrode being all connected to lead wires, and the lead wires being spaced from one another.
  • the heat generating part is U-shaped, an end of the heat generating part is electrically connected to the first electrode, another end of the heat generating part is electrically connected to the second electrode, the temperature measuring part is close to a U-shaped bottom of the heat generating part, and the temperature measuring part is away from an opening formed by the two ends of the heat generating part; and/or the temperature measuring part is U-shaped, an end of the temperature measuring part is electrically connected to the third electrode, and another end of the temperature measuring part is electrically connected to the fourth electrode.
  • the heat generating part includes a plurality of heat generating wires arranged spaced apart, an end of each of the heat generating wires being electrically connected to the first electrode, and another end of each of the heat generating wires being electrically connected to the second electrode, and the temperature measuring part is located in a space between U-shaped bottoms of the adjacent heat generating wires and is spaced from the heat generating wires.
  • the heat generating part includes two heat generating wires arranged spaced apart, and the first electrode and the second electrode are both U-shaped; and part of the third electrode is located on an inner side of the first electrode, and part of the fourth electrode is located on an inner side of the second electrode.
  • the heat generating part includes a heat generating wire
  • the heat generating area includes a high-temperature area and a non-high-temperature area.
  • the heat generating wire is arranged in both the high-temperature area and the non-high-temperature area.
  • the width of the heat generating wire in the high-temperature area is less than the width of the heat generating wire in the non-high-temperature area.
  • the heat generating wire includes an electrode section, a middle section, and a top section connected successively.
  • the electrode section is close to the heat generating electrode
  • the top section is close to the temperature measuring part
  • each of the widths of the electrode section and the top section is greater than the width of the middle section.
  • the base body is in a shape of a column or a strip sheet.
  • the base body includes a body and an insulating layer located on the body.
  • the body includes a base part and a tip part connected to the base part, the tip part extends in a direction away from the base part, the width of the cross section of the tip part gradually decreases in a direction away from the base part, the insulating layer is wound on the base part, and the heat generating circuit and the temperature measuring circuit are located on the insulating layer.
  • the base part is a ceramic base part or a stainless steel base part
  • the insulating layer is a glass ceramic insulating layer or a low-temperature ceramic insulating layer; and/or the insulating layer has a thickness ranging from 0.02 mm to 0.5 mm.
  • the resistance of the heat generating part ranges from 0.5 Q to 2 Q; and/or at the room temperature, the resistance of the temperature measuring part ranges from 1.5 ⁇ to 20 ⁇ .
  • the heat generating part is a positive temperature coefficient thermistor
  • the resistance temperature coefficient of the heat generating part is less than that of the temperature measuring part.
  • the material of the heat generating part is selected from at least one of a nickel-chromium alloy, a tantalum alloy, a gold-chromium alloy and a nickel-phosphorus alloy; and/or the material of the temperature measuring part is selected from at least one of copper (Cu), Ni, manganese (Mn) and Ru.
  • the sheet resistance of the heat generating part is no more than 5 m ⁇ / ⁇ , and the sheet resistance of the temperature measuring part is no more than 5 m ⁇ / ⁇ .
  • the heat generating body further includes a protective layer, the protective layer covering the heat generating part, the temperature measuring part and part of the temperature measuring electrode.
  • a heat generating assembly including a mounting seat and a heat generating body mounted on the mounting seat, the heat generating body being the heat generating body described above.
  • a heating device including a housing and the heat generating assembly described above.
  • the heat generating assembly 10 includes a mounting seat 101 and a heat generating body 100 mounted on the mounting seat 101.
  • the heat generating body 100 includes a base body 110 and a heat generating circuit 130 and a temperature measuring circuit 150 that are arranged on the base body 110.
  • the heat generating circuit 130 and the temperature measuring circuit 150 are independent of each other.
  • the base body 110 is configured to provide support for the heat generating circuit 130 and the temperature measuring circuit 150.
  • the base body 110 has a bottom surface 115.
  • the base body 110 includes a body 111 and an insulating layer 113.
  • the heat generating circuit 130 and the temperature measuring circuit 150 are located on the insulating layer 113.
  • the body 111 includes a base part 111a and a tip part 111b connected to the base part 111a.
  • the base part 111a is in a shape of a column, the tip part 111b extends in a direction away from the base part 111a, and the width of the cross section of the tip part 111b gradually decreases in a direction away from the base part 111a.
  • the base part 111a serves as a support for the insulating layer 113.
  • the arrangement of the tip part 111b facilitates insertion of the heat generating body 100 into a to-be-heated object (e.g., tobacco).
  • the base part 111a is in a shape of a cylinder, a triangular prism, or a quadrangular prism.
  • the base part 111a is not limited to the above shapes, which may also be in other shapes.
  • a longitudinal section of the base part 111a is in a shape of a rectangle
  • a longitudinal section of the tip part 111b is in a shape of an isosceles triangle.
  • the longitudinal section of the tip part 111b is not limited to the shape of the isosceles triangle, which may also be in a shape of another triangle.
  • the base part 111a has a hollow structure.
  • the base part 111a having the hollow structure can reduce a weight of the heat generating body 100. Meanwhile transfer of heat to an electrode arrangement area 117 can be reduced, and the utilization rate of the heat can be increased.
  • a region of the base part 111a away from the tip part 111b is provided with a blind hole. Further, the blind hole is close to the mounting seat 101.
  • the arrangement of the blind hole on the base part 111a close to the mounting seat 101 can also reduce transfer of the heat to the mounting seat 101, increase the utilization rate of the heat, and prolong the service life of the mounting seat 101 and other components in the mounting seat 101.
  • the body 111 is a ceramic body 111, for example, a zirconia ceramic body 111, an alumina ceramic body 111, or the like.
  • the base part 111a is a ceramic base part 111a
  • the tip part 111b is a ceramic tip part 111b.
  • the material of the base part 111a is not limited to ceramic, which may also be other materials, such as stainless steel.
  • the material of the tip part 111b is not limited to ceramic, either, which may also be other materials, such as stainless steel.
  • the insulating layer 113 is wound on the base part 111a.
  • the insulating layer 113 provides support for the heat generating circuit 130 and the temperature measuring circuit 150, and it also has an insulation effect.
  • the insulating layer 113 is wound on an outer surface of the body 111. In the embodiment shown in FIG. 3 , the insulating layer 113 is wound on an outer surface of the base part 111a.
  • the heat generating circuit 130 and the temperature measuring circuit 150 are prepared on the insulating layer 113 by silk screen printing. Then, the insulating layer 113 is wound (e.g., tape-cast) on the base part 111a and sintered together with the base part.
  • This operation can improve the efficiency of preparation of the heat generating circuit 130 and the temperature measuring circuit 150 on the columnar base part 111a, and prevent the problem that it is difficult to operate the columnar body 111 due to small sizes of the heat generating circuit 130 and the temperature measuring circuit 150.
  • the insulating layer 113 is a glass ceramic insulating layer 113 or a low-temperature ceramic insulating layer 113.
  • the glass ceramic insulating layer 113 is made of microcrystalline glass.
  • the low-temperature ceramic insulating layer 113 is made of low-temperature ceramic.
  • the insulating layer 113 is a glass ceramic insulating layer 113, and the insulating layer 113 is filled with calcium borosilicate glass-silicon oxide.
  • the insulating layer 113 is a barium tin borate ceramic insulating layer 113 or a barium zirconate borate ceramic insulating layer 113, and the insulating layer 113 is made of barium tin borate ceramic or barium zirconate borate ceramic.
  • the material of the insulating layer 113 is not limited to the above, which may also be other materials that can serve as the insulating layer 113 and can be wound on the body 111.
  • the low-temperature ceramic is ceramic at sintering temperatures below 1000 °C.
  • the material of the base part 111a is different from that of the insulating layer 113. For example, a material with higher ductility than the base part 111a is selected for the insulating layer 113, and a material with higher hardness than the insulating layer 113 is selected for the base part 111a.
  • the insulating layer 113 has a thickness ranging from 0.02 mm to 0.5 mm.
  • the thickness of the insulating layer 113 is 0.02 mm, 0.05 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm.
  • the insulating layer 113 may be omitted, provided that the body 111 is made of an insulating material when the insulating layer 113 is omitted.
  • the base body 110 is columnar, the base body 110 is provided with a heat generating area 119 and an electrode arrangement area 117 adjacent to the heat generating area 119, the electrode arrangement area 117 and the heat generating area 119 are arranged in a length direction of the base body 110, and the electrode arrangement area 117 is closer to the bottom surface 115 than the heat generating area 119.
  • the heat generating area 119 is a heat generating region of the heat generating body 100, and the heat generating circuit 130 is located in the heat generating area 119.
  • the electrode arrangement area 117 is a region where the heat generating body 100 is mounted on the mounting seat 101. Further, the heat generating area 119 includes a high-temperature area 119a.
  • the high-temperature area 119a is a region where the heat generating body 100 is operating at a relatively high temperature. In one embodiment, the high-temperature area 119a is spaced from the electrode arrangement area 117. In another embodiment, the high-temperature area 119a is adjacent to the electrode arrangement area 117.
  • the ratio of the length (a in FIG. 3 ) of the high-temperature area 119a in the length direction of the base body 110 to the sum (b in FIG. 3 ) of the lengths of the heat generating area 119 and the electrode arrangement area 117 in the length direction of the base body 110 is 1: (2 to 5). Further, the ratio of the length of the high-temperature area 119a in the length direction of the base body 110 to the length (c in FIG. 3 ) of the heat generating area 119 in the length direction of the base body 110 is 1: (1.5 to 4). In the embodiment shown in FIG.
  • the ratio of the length of the high-temperature area 119a in the length direction of the base body 110 to the sum of the lengths of the heat generating area 119 and the electrode arrangement area 117 in the length direction of the base body 110 is 1:3.
  • the ratio of the length of the high-temperature area 119a in the length direction of the base body 110 to the length of the heat generating area 119 in the length direction of the base body 110 is 1:2.
  • the heat generating circuit 130 is attached to the insulating layer 113.
  • the heat generating circuit 130 is a heat producing part of the heat generating body 100.
  • the heat generating circuit 130 includes a heat generating part 131 and a heat generating electrode 133 electrically connected to the heat generating part 131.
  • the heat generating electrode 133 is a component configured to connect the heat generating part 131 with a power supply.
  • the heat generating part 131 is attached to a surface on one side of the insulating layer 113 away from the body 111.
  • the heat generating part 131 forms the heat generating area 119 on the insulating layer 113.
  • the heat generating electrode 133 is also attached to the surface of the insulating layer 113.
  • the heat generating electrode 133 includes a first electrode 133a and a second electrode 133b.
  • the first electrode 133a and the second electrode 133b are also located on a surface of the base body 110 and close to the mounting seat 101.
  • the first electrode 133a is electrically connected to an end of the heat generating part 131
  • the second electrode 133b is electrically connected to another end of the heat generating part 131.
  • the first electrode 133a and the second electrode 133b are arranged spaced apart to connect two electrodes (anode and cathode) of the power supply respectively.
  • the heat generating circuit 130 and the temperature measuring circuit 150 are arranged on a same surface of the insulating layer 113, and the heat generating circuit 130 and the temperature measuring circuit 150 are attached to the outer surface of the base part 111a.
  • the heat generating part 131 includes a heat generating wire 131a.
  • the heat generating wire 131a has one end electrically connected to the first electrode 133a and another end connected to the second electrode 133b. Further, the heat generating wire 131a is connected to the first electrode 133a and the second electrode 133b by silk screen printing.
  • the heat generating part 131 includes a U-shaped heat generating wire 131a.
  • the heat generating wire 131a is attached to a surface of the insulating layer 113 away from the body 111.
  • the heat generating wire 131a has one end electrically connected to the first electrode 133a and another end connected to the second electrode 133b. In the embodiment shown in FIG.
  • the heat generating part 131 is two heat generating wires 131a spaced on the insulating layer 113.
  • the two heat generating wires 131a are both U-shaped.
  • One of the heat generating wires 131a is located on an inner side of the other of the heat generating wires 131a.
  • the first electrode 133a and the second electrode 133b are both U-shaped. Two ends of the first electrode 133a are electrically connected to an end of the two heat generating wires 131a respectively. Two ends of the second electrode 133b are electrically connected to another end of the two heat generating wires 131a respectively. It may be understood that, in other embodiments, the number of the heat generating wire 131a is not limited to the above, which may also be other numbers.
  • the plurality of heat generating wires 131a are spaced, and each heat generating wire has one end electrically connected to the first electrode 133a and another end connected to the second electrode 133b.
  • the heat generating wire 131a is not limited to the U shape, which may also be in other shapes, such as a V shape, an S shape, and the like.
  • the first electrode 133a and the second electrode 133b are not limited to the U shape, which may also be in a strip shape or an L shape.
  • the heat generating area 119 includes a high-temperature area 119a and a non-high-temperature area.
  • the width of the heat generating wire 131a in the high-temperature area 119a is less than that of the heat generating wire 131a in the non-high-temperature area.
  • the base body 110 is in a shape of a column or a strip sheet.
  • the length of the high-temperature area 119a is the length of the heat generating wire 131a with a relatively small width in the length direction of the base body 110.
  • the width of the high-temperature area 119a is the width of the base body 110.
  • the heat generating wire 131a includes an electrode section, a middle section, and a top section connected successively.
  • the electrode section is close to the heat generating electrode 133, and the top section is close to the temperature measuring part 151.
  • the width of the middle section is less than each of the widths of the electrode section and the top section (the width of the middle section is minimum).
  • the width of the middle section of the heat generating wire 131a is set to less than the each of the widths of the electrode section and the top section, so that the heat generated by the heat generating body 100 is more concentrated in the middle section and diffuses to the top section and the electrode section, which is in line with smoke taste during the heating, and a region close to the heat generating electrode 133 is at a relatively low temperature, preventing influence on or damage to the mounting seat due to a high temperature. That is, when the width of the middle section of the heat generating wire 131a is less than the each of the widths of the electrode section and the top section, the high-temperature area 119a is a region where the middle section is located.
  • the length of the high-temperature area 119a is the length of the middle section in the length direction of the base body 110, and the width of the high-temperature area 119a is the width of the base body 110. In this case, the high-temperature area 119a is spaced from the electrode arrangement area 117.
  • the width of the top section of the heat generating wire 131a is less than the widths of the electrode section and the middle section, so that the heat generated by the heat generating body 100 is concentrated in the top section.
  • the high-temperature area 119a is a region where the top section is located.
  • the length of the high-temperature area 119a is the length of the top section in the length direction of the base body 110, and the width of the high-temperature area 119a is the width of the base body 110. In this case, the high-temperature area 119a is spaced from the electrode arrangement area 117.
  • the width of the electrode section of the heat generating wire 131a is less than each of the widths of the middle section and the top section, so that the heat generated by the heat generating body 100 is concentrated in the electrode section.
  • the high-temperature area 119a is a region where the electrode section is located.
  • the length of the high-temperature area 119a is the length of the electrode section in the length direction of the base body 110, and the width of the high-temperature area 119a is the width of the base body 110. In this case, the high-temperature area 119a is adjacent to the electrode arrangement area 117.
  • the heat generating part 131 is prepared from a high-resistivity resistance paste.
  • the heat generating wire 131a is prepared from the high-resistivity resistance paste.
  • the heat generating part 131 may be formed by transferring the high-resistivity resistance paste onto the insulating layer 113 by silk-screen printing a thick-film paste, and then sintering.
  • the high-resistivity resistance paste for preparing the heat generating part 131 includes at least one of Ni, Ag, Pd, Pt and Ru.
  • the resistance paste for preparing the heat generating part 131 includes Ni, an AgPd alloy, an AgPt alloy or an Ag-Ru alloy.
  • the high-resistivity resistance paste for preparing the heat generating part 131 further includes a binder, for example, an inorganic binder. It may be understood that the binder accounts for a small proportion in the high-resistivity resistance paste.
  • the preparation method for the heat generating part 131 is not limited thereto, which may also be other common methods in the art.
  • the sheet resistance of the heat generating part 131 ranges from 20 m ⁇ / ⁇ to 200 m ⁇ / ⁇ . Further, the sheet resistance of the heat generating part 131 is 20 m ⁇ / ⁇ , 50 m ⁇ / ⁇ , 80 m ⁇ / ⁇ , 100 m ⁇ / ⁇ , 120 m ⁇ / ⁇ , 150 m ⁇ / ⁇ , 180 m ⁇ / ⁇ , or 200 m ⁇ / ⁇ .
  • the resistance of the heat generating part 131 ranges from 0.5 ⁇ to 2 ⁇ . Further, at the room temperature, the resistance of the heat generating part 131 ranges from 1 ⁇ to 2 ⁇ . Certainly, in other embodiments, the resistance of the heat generating part 131 at the room temperature is not limited to the above.
  • the resistance of the heat generating part 131 may be set by adjusting the material of the resistance paste for preparing the heat generating part 131, the length of the heat generating part 131, the width of the heat generating part 131, a thickness of the heat generating part 131, and a pattern of the heat generating part 131 as required.
  • the heat generating part 131 is a positive temperature coefficient thermistor.
  • the heat generating part 131 can be rapidly heated, and after the temperature reaches a certain value, the resistance of the heat generating part 131 rises sharply due to the rise of the temperature, so that almost no current flows through the heat generating part 131 and the heat generating part 131 stops generating heat, thereby preventing the continuous excessively high temperature of the heat generating area 119.
  • the heat generating electrode 133 is made of a low-resistivity resistance paste. More specifically, the first electrode 133a and the second electrode 133b are made of the low-resistivity resistance paste. Similarly, the heat generating electrode 133 may be formed by transferring the low-resistivity resistance paste onto the insulating layer 113 by silk-screen printing a paste, and then sintering. Specifically, the low-resistivity resistance paste for preparing the heat generating electrode 133 includes at least one of Ag and gold (Au). In an optional specific example, the resistance paste for preparing the heat generating electrode 133 includes Ag, Au, an Au alloy or an Ag alloy.
  • the low-resistivity resistance paste for preparing the heat generating electrode 133 further includes a binder, for example, an inorganic binder. It may be understood that the binder accounts for a larger proportion in the low-resistivity resistance paste than in the high-resistivity resistance paste.
  • the preparation method for the heat generating electrode 133 is not limited thereto, which may also be other common methods in the art.
  • the sheet resistance of the heat generating electrode 133 is no more than 5 m ⁇ / ⁇ . Further, the sheet resistance of the heat generating electrode 133 ranges from 1 m ⁇ / ⁇ to 5 m ⁇ / ⁇ . The resistance of the heat generating electrode 133 is much less than that of the heat generating part 131. For example, the resistance of the heat generating electrode 133 ranges from 0.1 ⁇ to 0.5 ⁇ . In this way, the heat generating electrode 133 produces almost no heat when energized, reducing the temperature of the mounting seat 101 and saving energy consumption.
  • the temperature measuring circuit 150 is configured to feed back a temperature of the heat generating body 100.
  • the temperature measuring circuit 150 is attached to a surface on one side of the insulating layer 113 away from the body 111.
  • the temperature measuring circuit 150 and the heat generating circuit 130 are arranged spaced apart, so that the heat generating circuit 130 and the temperature measuring circuit 150 are independent of each other.
  • the temperature measuring circuit 150 has less spontaneous heat and fewer miscellaneous signals introduced by current heating, which is conducive to accurate control of electronic components over the temperature.
  • the temperature measuring circuit 150 includes a temperature measuring part 151 and a temperature measuring electrode 153 electrically connected to the temperature measuring part 151.
  • the temperature measuring part 151 is a part of the temperature measuring circuit 150 configured for temperature measurement.
  • the temperature measuring part 151 is within the high-temperature area 119a.
  • the temperature measuring electrode 153 is a component configured to connect the temperature measuring part 151 with the power supply.
  • the temperature measuring electrode 153 is attached to the insulating layer 113. When the high-temperature area 119a is spaced from the electrode arrangement area 117, the temperature measuring electrode 153 extends from the heat generating area 119 into the electrode arrangement area 117.
  • the temperature measuring electrode 153 When the high-temperature area 119a is adjacent to the electrode arrangement area 117, the temperature measuring electrode 153 is entirely located in the electrode arrangement area 117. In an optional specific example, an end of the temperature measuring electrode 153 close to the temperature measuring part 151 is flush with an end of the heat generating electrode 133 close to the heat generating part 131.
  • the temperature measuring part 151 has resistance TCR characteristics. That is, a specific correspondence exists between temperatures and resistance. When a voltage is applied to the temperature measuring part 151 through the power supply and an electronic control device, a specific current value is obtained, so as to obtain a resistance value of the temperature measuring part 151, and then the temperature of the heat generating body 100 is obtained through the resistance value measured.
  • the temperature measuring electrode 153 includes a third electrode 153a and a fourth electrode 153b.
  • the third electrode 153a and the fourth electrode 153b extend from the heat generating area 119a to the electrode arrangement area 117.
  • An end of the temperature measuring part 151 is electrically connected to the third electrode 153a, and another end of the temperature measuring part 151 is electrically connected to the fourth electrode 153b.
  • the temperature measuring part 151 is connected to the third electrode 153a and the fourth electrode 153b by soldering.
  • the temperature of the heat generating body 100 generally decreases from the heat generating area 119 to the electrode arrangement area 117 gradually, mainly because airflow flows from the electrode arrangement area 117 to the heat generating area 119 when a user smokes. That is, the electrode arrangement area 117 is cooled first.
  • the heat at a relatively high position may be slightly more than that at a low position.
  • the temperature of the heat generating area 119 away from the electrode arrangement area 117 is often higher than that of the heat generating area 119 close to the electrode arrangement area 117.
  • the arrangement of the temperature measuring part 151 in the heat generating area 119 away from the electrode arrangement area 117 can more accurately reflect the temperature of the heat generating body 100, so as to facilitate more accurate control over a temperature in an initial heating stage, so that the deviation between the temperature in the initial heating stage and a planned temperature is smaller.
  • the temperature measuring part 151 is located in the high-temperature area 119a.
  • a maximum temperature of the heat generating body 100 can be more accurately reflected, it is easier to control a voltage of a heat generation circuit of the heat generating body 100, and heat generated by the heat generating circuit 130 is reduced. Therefore, the deviation between an actual temperature in the initial heating stage and a planned temperature is smaller, improving consistency between the actual temperature in the initial heating stage and the planned temperature.
  • the temperature measuring part 151 includes a temperature measuring wire.
  • the temperature measuring part 151 is a temperature measuring wire.
  • the temperature measuring wire is away from the connection point between the heat generating wire 131a and the first electrode 133a, the second electrode 133b (i.e., an opening formed by two ends of the U-shaped heat generating wire 131a) and close to the bottom of the U-shaped heat generating wire 131a, and the temperature measuring wire is on an inner side of the U-shaped heat generating wire 131a.
  • one or more temperature measuring wires may be provided.
  • the temperature measuring wire is arranged in a high-temperature area 119a formed by the plurality of heat generating wires 131a.
  • the temperature measuring wires are arranged spaced apart in the high-temperature area 119a formed by the plurality of heat generating wires 131a.
  • the temperature measuring wire is also U-shaped.
  • the high-temperature area 119a formed by the heat generating wires 131a is the heat generating area 119 whose distance to the bottom surface 115 of the base body 110 is greater than 2/3 of the length of the base body.
  • the temperature measuring wire is located between two U-shaped heat generating wires 131a, and the temperature measuring wire is spaced from the two U-shaped heat generating wires 131a.
  • the third electrode 153a and the fourth electrode 153b on the surface on the side of the insulating layer 113 away from the body 111 are strip-shaped. Part of the third electrode 153a is located on an inner side of the first electrode 133a, and part of the fourth electrode 153b is located on an inner side of the second electrode 133b.
  • the temperature measuring wire is not limited to the U shape, which may also be in other shapes, such as a V shape, an S shape, and the like.
  • the third electrode 153a and the fourth electrode 153b are not limited to the strip shape, which may also be in other shapes, such as an L shape.
  • the temperature measuring part 151 is prepared from a high-resistivity resistance paste. More specifically, the temperature measuring wire may also be prepared from the high-resistivity resistance paste.
  • the temperature measuring part 151 may be formed by transferring the high-resistivity resistance paste onto the insulating layer 113 by silk-screen printing a thick-film paste, and then sintering.
  • the high-resistivity resistance paste for preparing the temperature measuring part 151 includes at least one of Ni, Ag, Pd, Pt, and Ru. Further, the resistance paste for preparing the temperature measuring part 151 includes Ni, an AgPd alloy, an AgPt alloy or an Ag-Ru alloy.
  • the high-resistivity resistance paste for preparing the temperature measuring part 151 further includes a binder, for example, an inorganic binder. It may be understood that the binder accounts for a small proportion in the high-resistivity resistance paste.
  • the preparation method for the temperature measuring part 151 is not limited thereto, which may also be other common methods in the art.
  • the sheet resistance of the temperature measuring part 151 ranges from 20 m ⁇ / ⁇ to 200 m ⁇ / ⁇ . Further, the sheet resistance of the temperature measuring part 151 is 20 m ⁇ / ⁇ , 50 m ⁇ / ⁇ , 80 m ⁇ / ⁇ , 100 m ⁇ / ⁇ , 120 m ⁇ / ⁇ , 150 m ⁇ / ⁇ , 180 m ⁇ / ⁇ , or 200 m ⁇ / ⁇ .
  • the temperature measuring part 151 does not generate heat, initial resistance thereof is generally larger than the resistance of the temperature measuring part 151.
  • the resistance of the temperature measuring part 151 ranges from 1.5 ⁇ to 20 ⁇ . Further, at the room temperature, the resistance of the temperature measuring part 151 ranges from 10 ⁇ to 20 ⁇ .
  • the resistance of the temperature measuring part 151 at the room temperature is not limited to the above.
  • the resistance of the temperature measuring part 151 may be set by adjusting the material of the resistance paste for preparing the temperature measuring part 151, the length of the temperature measuring part 151, the width of the temperature measuring part 151, a thickness of the temperature measuring part 151, and a pattern of the temperature measuring part 151 as required.
  • the temperature measuring part 151 is a positive temperature coefficient thermistor.
  • the resistance value varies with temperature over a larger span, and a temperature of a surrounding environment can be more accurately reflected.
  • the resistance temperature coefficient of the heat generating part 131 is less than that of the temperature measuring part 151.
  • the resistance temperature coefficient of the heat generating part 131 being less than that of the temperature measuring part 151 enables heat generating and temperature measuring functions to be separated, and the heat generating circuit 130 has relatively low energy consumption and low costs.
  • the material of the heat generating part 131 is selected from at least one of a nickel-chromium alloy, a tantalum alloy, a gold-chromium alloy and a nickel-phosphorus alloy.
  • the resistance temperature coefficient of the heat generating part 131 can be relatively low.
  • the resistance value of the heat generating part 131 varies slightly with temperature, the resistance value is stable and reliable, and the heat generation is stable.
  • the material of the temperature measuring part 151 is selected from at least one of copper (Cu), Ni, manganese (Mn), and Ru. Further, the material of the temperature measuring part 151 is selected from one of Cu, Ni, Mn, and Ru.
  • the temperature measuring electrode 153 is also made of a low-resistivity resistance paste. More specifically, the third electrode 153a and the fourth electrode 153b are also made of low-resistivity resistance pastes.
  • the temperature measuring electrode 153 may be formed by transferring the low-resistivity resistance paste onto the insulating layer 113 by silk-screen printing a paste, and then sintering.
  • the low-resistivity resistance paste for preparing the temperature measuring electrode 153 includes at least one of Ag and Au.
  • the resistance paste for preparing the temperature measuring electrode 153 includes Ag, Au, an Au alloy or an Ag alloy.
  • the low-resistivity resistance paste for preparing the temperature measuring electrode 153 further includes a binder, for example, an inorganic binder. It may be understood that the binder accounts for a larger proportion in the low-resistivity resistance paste than in the high-resistivity resistance paste.
  • the preparation method for the temperature measuring electrode 153 is not limited thereto, which may also be other common methods in the art.
  • the sheet resistance of the temperature measuring electrode 153 is no more than 5 m ⁇ / ⁇ . Further, the sheet resistance of the temperature measuring electrode 153 ranges from 1 m ⁇ / ⁇ to 5 m ⁇ / ⁇ . Resistance of the temperature measuring electrode 153 is much less than that of the temperature measuring part 151. For example, the resistance of the temperature measuring electrode 153 ranges from 0.1 ⁇ to 0.5 ⁇ . In this way, the temperature measuring electrode 153 generates almost no heat when energized, reducing a temperature of the mounting seat 101 and saving energy consumption. Referring to FIG. 2 , the temperature measuring electrode 153 is further provided with a lead wire 140. The lead wire 140 on the temperature measuring electrode 153 is configured to electrically connect the power supply with the temperature measuring electrode 153.
  • the heat generating electrode 133 is also provided with a lead wire 140.
  • the lead wire 140 on the heat generating electrode 133 is configured to electrically connect the power supply with the heat generating electrode 133.
  • the lead wire 140 on the temperature measuring electrode 153 and the lead wire 140 on the heat generating electrode 133 are arranged spaced apart.
  • the heat generating electrode 133 is soldered with a lead wire 140
  • the temperature measuring electrode 153 is also soldered with a lead wire 140
  • a soldering point between the temperature measuring electrode 153 and the lead wire 140 and a soldering point between the heat generating electrode 133 and the lead wire 140 are both located in the mounting seat 101.
  • a plane where the lead wire 140 on the temperature measuring electrode 153 is located is not coplanar with a plane where the lead wire 140 on the heat generating electrode 133 is located.
  • the soldering point between the temperature measuring electrode 153 and the lead wire 140 is closer to the bottom surface 115 of the base body 110 than the soldering point between the heat generating electrode 133 and the lead wire 140.
  • the lead wire 140 of the temperature measuring electrode 153 and the heat generating electrode 133 are located on different surfaces on the side of the insulating layer 113 away from the body 111.
  • the temperature measuring electrode 153 has one part located on the side of the insulating layer 113 away from the body 111 and the other part located on the side of the insulating layer 113 close to the body 111.
  • the temperature measuring electrode 153 is connected to the lead wire 140 through an electrode located on the side of the insulating layer 113 close to the body 111.
  • two heat generating electrodes 133 are provided, two temperature measuring electrodes 153 are provided, four lead wires are provided, and the two heat generating electrodes 133 and the two temperature measuring electrodes 153 are each connected to one lead wire.
  • the heat generating body 100 further includes a protective layer 170.
  • the protective layer 170 is configured to protect the heat generating part 131, the temperature measuring part 151, and the temperature measuring electrode 153 located in the heat generating area 119. Specifically, the protective layer 170 is located in the heat generating area 119.
  • the protective layer covers the heat generating part 131, the entire temperature measuring part 151, and part of the temperature measuring electrode 153.
  • the protective layer 170 is a glaze layer.
  • the protective layer 170 is a glaze layer, since the glaze layer has a smooth surface, the protective layer 170 enables the heat generating body 100 to have an effect of resisting adhesion of tobacco oil while protecting components in the heat generating area 119, so that the to-be-heated object can be removed and inserted more smoothly.
  • the material of the protective layer 170 is not limited to glaze, which may also be other materials.
  • the protective layer 170 has a thickness ranging from 0.1 mm to 0.5 mm. Certainly, when the thickness of the protective layer 170 is greater than 0.5 mm, it is not conducive to transferring the heat of the heat generating part 131 to the to-be-heated object. When the thickness of the protective layer 170 is less than 0.1 mm, the protective layer 170 may be damaged or easily detached.
  • the base part is in a shape of a cylinder
  • the base part 111a has a diameter ranging from 2 mm to 5 mm
  • the base part 111a has a length ranging from 15 mm to 25 mm
  • the body 111 has a length ranging from 18 mm to 30 mm.
  • the heat generating part 131 has a length ranging from 8 mm to 12 mm in a length direction of the base part 111a, and the heat generating part 131 has a width ranging from 0.5 mm to 1.5 mm.
  • the diameter of the base part 111a is 3 mm
  • the length of the base part 111a is 16 mm
  • the length of the body 111 is 20 mm.
  • the length of the heat generating part 131 in the length direction of the base part 111a is 10 mm, and the width of the heat generating part 131 is 0.8 mm.
  • dimensions of the body 111, the base part 111a, and the heat generating wire 131a are not limited to the above, which may also be adjusted as required.
  • a region from one side of the heat generating electrode 133 close to the heat generating part 131 to the bottom surface 115 of the base body 110 is the electrode arrangement area 117.
  • the mounting seat 101 is located in the electrode arrangement area 117. Referring to FIG. 4 to FIG. 7 , the mounting seat 101 is fixed to the heat generating body 100, the mounting seat 101 has a hollow structure, the mounting seat 101 is fixedly connected to the base body 110 of the heat generating body 100, and the connection point between the mounting seat 101 and the base body 110 is located on one side of the heat generating electrode 133 close to the bottom surface 115.
  • connection point between the mounting seat 101 and the base body 110 is arranged on the side of the heat generating electrode 133 close to the bottom surface 115, so that a part of the mounting seat 101 in contact with the base body 110 is away from the heat generating part 131 and closer to the bottom surface 115, thereby reducing the influence of the heat of the heat generating part 131 on the mounting seat 101 and prolonging the service life of the mounting seat 101.
  • connection point between the mounting seat 101 and the base body 110 is located between the heat generating electrode 133 and the bottom surface 115, and the connection point between the mounting seat 101 and the base body 110 is spaced from the heat generating electrode 133 and the bottom surface 115.
  • connection point between the mounting seat 101 and the base body 110 is on one side close to the bottom surface 115 and adjacent to the heat generating electrode 133.
  • the clamping point or abutting point between the mounting seat 101 and the base body 110 is located between the heat generating electrode 133 and the bottom surface 115, and the clamping point or abutting point between the mounting seat 101 and the base body 110 is spaced from the heat generating electrode 133 and the bottom surface 115.
  • the clamping point or abutting point between the mounting seat 101 and the base body 110 is on one side close to the bottom surface 115 and adjacent to the heat generating electrode 133.
  • the heat generating assembly 10 further includes a clamping member 105.
  • the clamping member 105 is arranged outside the base body 110 and is fixed to the base body 110.
  • the clamping member 105 is located in the mounting seat 101 and clamped with an inner wall of the mounting seat 101.
  • the heat generating body 100 is fixed in the mounting seat 101 through cooperation between the clamping member 105 and the mounting seat 101.
  • the clamping member 105 is located between the connection point between the heat generating electrode 133 and the lead wire and the connection point between the temperature measuring electrode 153 and the lead wire. Part of the temperature measuring electrode 153 is housed in the mounting seat.
  • the clamping member 105 may be further at another position in the mounting seat 101.
  • the clamping member 105 is located between the temperature measuring electrode 153 and the bottom surface 115.
  • the clamping member 105 is provided with a through hole or slot for the lead wire 140 to pass through.
  • the clamping member 105 is a flange.
  • the clamping member 105 is integrally formed with the base body 110 of the heat generating body 100.
  • the clamping member 105 may be omitted.
  • the heat generating body 100 may be mounted on the mounting seat 101 by interference fit. Certainly, a contact part between the base body 110 and the mounting seat 101 during the interference fit is located on the side of the heat generating electrode 133 close to the bottom surface.
  • the temperature measuring electrode 153 may also be entirely housed in the mounting seat 101. It may be understood that, in some other embodiments, the connection point between the mounting seat 101 and the base body 100 may also be located on the side of the heat generating electrode 133 close to the heat generating part 131 or on the heat generating electrode 133. In this case, the mounting seat 101 is closer to the heat generating part 131, which is easily affected by heat and has a shortened service life.
  • the mounting seat 101 includes a mounting base 101a and a mounting cover 101b.
  • the mounting base 101a and the mounting cover 101b may be movably connected or fixedly connected.
  • the mounting base 101a is clamped with the mounting cover 101b.
  • through holes are provided on the mounting base 101a and/or the mounting cover 101b for the lead wires 140 to be threaded out.
  • a plurality of lead wire slots is provided in the mounting seat 101a and/or the mounting cover 101b.
  • the lead wires 140 are arranged in different lead wire slots respectively, so that the lead wires 140 are spaced apart. In the embodiment shown in FIG.
  • the heat generating part 131 is not arranged in the mounting seat 101, so that the influence of the heat generating body 100 on the mounting seat 101 is further reduced.
  • part of the heat generating part 131 may be arranged in the mounting seat 101.
  • the heat generating assembly 10 further includes a sealing member 103.
  • the sealing member 103 is arranged outside the heat generating body 100.
  • the sealing member 103 is located at the connection point between the heat generating part 131 and the heat generating electrode 133.
  • the sealing member 103 is configured to prevent the influence on the electrode in the mounting seat 101 due to the flowing of a product formed after heating (e.g., atomized liquid generated by heating tobacco or a cartridge) along the surface of the heat generating body 100 into the mounting seat 101.
  • the sealing member 103 abuts against the mounting seat 101 and is partially housed in the mounting seat 101.
  • the material of the sealing member 103 is silica gel.
  • the sealing member 103 may also be made of other materials.
  • the sealing member 103 is in loose fit with the heat generating body 100, provided that it is difficult for the atomized liquid generated by heating the tobacco or cartridge to enter the mounting seat 101 through a gap.
  • a gap ranging from 0.5 mm to 2 mm exists between the sealing member 103 and the heat generating body 100. Within the range of the gap, it is difficult for the atomized liquid generated by heating the tobacco or cartridge to enter the mounting seat 101 through the gap.
  • a gap of 1 mm exists between the sealing member 103 and the heat generating body 100.
  • the sealing member 103 may be omitted.
  • the mounting seat 101 may also be designed with the function of the sealing member 103.
  • an end of the mounting seat 101 close to the connection point between the heat generating electrode 133 and the heat generating part 131 may be designed to prevent the flowing of the product formed after heating into the mounting seat 101.
  • a protection member may also be arranged in the mounting seat 101 to protect the electrode.
  • the present application further provides a heat generating assembly 20 according to another implementation.
  • the heat generating assembly 20 has a structure roughly the same as that of the heat generating assembly 10.
  • the heat generating assembly 20 includes a mounting seat 201, a heat generating body 200 mounted on the mounting seat 201, and a sealing member 203.
  • the sealing member 203 is arranged outside the heat generating body 200 and is close to the mounting seat 201.
  • the heat generating body 200 includes a base body 210 and a heat generating circuit 230 and a temperature measuring circuit 250 that are arranged on the base body 210 and independent of each other.
  • the heat generating circuit 230 includes a heat generating part 231 and a heat generating electrode 233.
  • the heat generating part 231 forms a heat generating area on the base body 210.
  • the heat generating electrode 233 includes a first electrode 233a and a second electrode 233b.
  • the temperature measuring circuit 250 includes a temperature measuring part 251 and a temperature measuring electrode 253.
  • the temperature measuring part 251 is located in the heat generating area away from the mounting seat 201.
  • the temperature measuring electrode 253 extends from the heat generating area into the mounting seat 201.
  • the temperature measuring electrode 253 includes a third electrode 253a and a fourth electrode 253b.
  • the heat generating assembly 20 is different from the heat generating assembly 10 in that, in the heat generating assembly 20,
  • the base body 210 is in a shape of a strip sheet. Specifically, the body 211 is in a shape of a strip sheet, and the body 211 is provided with a first protrusion 211c and a second protrusion 211d. The first protrusion 211c and the second protrusion 211d are arranged spaced apart. The first protrusion 211c is close to the heat generating electrode 233. The second protrusion 211d is close to a bottom surface of the base body 210.
  • a chute 201c is arranged on a mounting base 201a of the mounting seat 201.
  • a slider 201d is arranged on a mounting cover 201b.
  • the mounting base 201a and the mounting cover 201b are movably connected through cooperation between the chute 201c and the slider 201d.
  • the mounting base 201a is further provided with a clamping slot 201f.
  • the clamping slot 201f is located on one side of the heat generating electrode 233 close to the bottom surface of the base body 210.
  • the second protrusion 211d is clamped in the clamping slot 201f, so that the mounting seat 201 is fixedly connected to the base body 110.
  • a guide protrusion is further formed on the mounting seat 201a to facilitate the mounting of the heat generating body 200.
  • An upper surface and a lower surface of the body 211 are each provided with an insulating layer 213, and the insulating layer 213 close to the lower surface of the body 211 is further provided with a protective layer 270.
  • the heat generating electrode 233 is coplanar with the temperature measuring electrode 253.
  • the present application further provides a heating device.
  • the heating device includes any one of the above heat generating assemblies.
  • a structure of a heat generating assembly according to Embodiment 1 is shown in FIG. 1 .
  • a base part of a heat generating body is made of zirconia ceramic and has a diameter of 3 mm.
  • the base part has a length of 16 mm.
  • An insulating layer wound on the base part has a thickness of 0.3 mm.
  • a heat generating wire has a length of 10 mm in a length direction of the base part.
  • the heat generating wire has a width of 0.8 mm.
  • a maximum length of the heat generating wire formed in a width direction of the base part is 5.06 mm.
  • a temperature measuring wire has a length of 4 mm in the length direction of the base part. Distances between the temperature measuring wire and two heat generating wires are equal.
  • the resistance of a heat generating part is 1 Q at room temperature.
  • the sheet resistance of the heat generating part is 100 m ⁇ / ⁇ .
  • the heat generating part is mainly made of Ni.
  • the resistance of a temperature measuring part is 10 ⁇ at room temperature.
  • the sheet resistance of the temperature measuring part is 150 m ⁇ / ⁇ .
  • the temperature measuring part is mainly made of AgPb.
  • a temperature measuring electrode and a heat generating electrode are both electrodes made of silver pastes.
  • Thermostatic stability of the heat generating assembly according to Embodiment 1 in an initial stage is tested by infrared temperature measurement, and results are shown in FIG. 13 .
  • the abscissa is time
  • the length of each square in a horizontal direction represents 15 s
  • the ordinate is temperature ( °C).
  • the temperature measuring part of the heat generating body in Embodiment 1 can accurately reflect a real-time temperature of the heat generating body.
  • the heat generating body shows a small upsurge in the highest temperature up to 345 °C, then gradually stabilizes at a temperature of 340 °C, which shows a high temperature overshoot of only about 5 °C, and then quickly reaches a stable temperature.
  • the temperature measuring part is arranged in the heat generating area away from the electrode arrangement area as described above, which can well alleviate the problem that it is difficult to control the temperature in the initial stage of the heat generating body to be consistent.
  • a structure of a heat generating assembly according to Comparative Example 1 is roughly the same as that in Embodiment 1, except that, as shown in FIG. 14 , a temperature measuring part 351 in Comparative Example 1 is arranged in an entire heat generating area 319, and the sheet resistance of the temperature measuring part 351 in Comparative Example 1 is the same as that in Embodiment 1.
  • Thermostatic stability of the heat generating assembly according to Comparative Example 1 in an initial stage is shown in FIG. 15 .
  • the abscissa is time
  • the length of each square in a horizontal direction represents 15 s
  • the ordinate is temperature (°C).
  • the heat generating body in Comparative Example 1 when the heat generating body in Comparative Example 1 is controlled at a constant temperature, since the temperature measuring part 351 cannot reflect the real-time temperature of the heat generating body, the heat generating body shows a large upsurge in the highest temperature up to 362 °C, and then gradually reaches a stable temperature of 338 °C, which shows a high temperature overshoot of about 24 °C.
  • the temperature overshoot may vary greatly as the heat generating body varies, which may make it more difficult to control the temperature of the heat generating body in the initial stage to be consistent during batch production.

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  • Control Of Resistance Heating (AREA)
EP21873893.8A 2020-09-30 2021-05-27 Corps de génération de chaleur, ensemble de corps de génération de chaleur et dispositif de chauffage Pending EP4190191A1 (fr)

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CN208228305U (zh) * 2018-01-16 2018-12-14 东莞市国研电热材料有限公司 一种带控温电阻的电子烟用片状陶瓷发热体
KR102029225B1 (ko) * 2018-03-30 2019-10-08 (주)케이엔씨 궐련형 전자담배 가열기기용 세라믹히터 및 이의 제조방법
CN208549031U (zh) * 2018-04-11 2019-02-26 陈梅 加热装置与测温装置的双层烧结及温度保护结构
CN108652088A (zh) * 2018-08-06 2018-10-16 云南中烟工业有限责任公司 一种新型卷烟加热元件及其制备方法
CN109315838B (zh) * 2018-11-02 2023-12-19 普维思信(深圳)科技有限公司 一种加热不燃烧香烟的智能3d均热装置、套件及其加热方法
CN209376692U (zh) * 2018-11-20 2019-09-13 威滔电子科技（深圳）有限公司 一种发热组件及气溶胶产生装置
CN209930528U (zh) * 2019-03-23 2020-01-10 深圳鼎智通讯股份有限公司 自带独立测温线路的新型陶瓷加热片
CN210694398U (zh) * 2019-08-13 2020-06-05 东莞市国研电热材料有限公司 一种电子烟用的陶瓷发热体
CN110959918A (zh) * 2019-12-09 2020-04-07 深圳麦时科技有限公司 一种发热组件及电子雾化装置
CN112244359A (zh) * 2020-09-30 2021-01-22 深圳麦时科技有限公司 发热体、发热组件和加热装置
CN214156218U (zh) * 2020-09-30 2021-09-10 深圳麦时科技有限公司 发热体、发热组件和加热装置
CN112244355A (zh) * 2020-09-30 2021-01-22 深圳麦时科技有限公司 发热组件及加热装置

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