Ceramic heating component of an electronic smoking set

Abstract

The utility model discloses a ceramic heating assembly of electronic smoking set, including inner ceramic pipe, outer ceramic pipe and heating resistance wire, and the outer ceramic pipe inner wall is closely connected in the outer wall of inner ceramic pipe, and the outer wall of inner ceramic pipe and / or the inner wall of outer ceramic pipe is equipped with the first annular line recess, after the sleeve connection of inner ceramic pipe and outer ceramic pipe, the first annular line recess is located between inner ceramic pipe and outer ceramic pipe and closes to form the first annular line pipeline, and the heating resistance wire is located in the first annular line pipeline, and the heating resistance wire heats after electrification to heat inner ceramic pipe, and inner ceramic pipe heat conduction to cigarette outer wall and roasts it to produce the smoke of inhalable oral cavity. Its beneficial effect is, and inner ceramic pipe heat conduction effect is uniform, can avoid the local overheating and lead to the smoke of producing the burnt taste, and the heating resistance wire is located between inner ceramic pipe and outer ceramic pipe and is protected by isolation, avoids damaging to reduce the heat conduction efficiency, and the inner wall of inner ceramic pipe is not easy to stick the tobacco tar, soot and affects the heat conduction efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic cigarette devices, and more specifically, to a ceramic heating element for an electronic cigarette device. Background Technology

[0002] Electronic cigarette devices include heated tobacco products used to heat and bake a cigarette to produce aerosol or smoke for the user to inhale. These devices generally include a casing, a power supply component, and a heating component. The power supply component contains a battery that supplies power to the heating component. When powered, the heating component heats and bakes the aerosol-generating matrix or the tobacco portion of the cigarette to produce aerosol or smoke. The cigarette typically includes a mouthpiece and a heatable portion, which is generally made of an aerosol-generating matrix or smoke-producing tobacco material.

[0003] The heating components of existing electronic cigarette devices on the market mainly include heating wire heating and electromagnetic induction coil heating. Both methods require heating tubes or heat-conducting tubes to heat the outside of the cigarette, or heating needles, heat-conducting needles, or heating plates / plates to heat the inside of the cigarette. Currently, when using external heating, the heat-conducting tubes are mainly made of metal to ensure good heat conduction. Generally, when a user turns on an electronic cigarette device, the heating component must first be turned on to fully preheat the cigarette before inhaling vapor.

[0004] Existing metal heat pipes typically heat the entire outer wall of the heat pipe by energizing a heating wire fitted onto its outer wall. Because the area where the metal heat pipe contacts the heating wire conducts heat quickly, it can rapidly and locally heat the cigarette, easily causing localized overheating and scorching of the outer wall, resulting in a burnt smell in the smoke. Furthermore, after prolonged high-temperature operation, the heating wire is prone to deformation, causing it to loosen from the heat pipe. This prevents the heating wire from adhering tightly to the outer wall, reducing heat transfer efficiency and resulting in a poor user experience. Utility Model Content

[0005] This invention provides a ceramic heating element for an electronic cigarette device to overcome the above-mentioned technical deficiencies.

[0006] The technical solution of this utility model is implemented as follows: A ceramic heating component for an electronic cigarette device includes an inner ceramic tube, an outer ceramic tube, and a heating resistance wire. The inner wall of the outer ceramic tube is tightly fitted onto the outer wall of the inner ceramic tube. The inner wall of the inner ceramic tube can insert and accommodate a cigarette. The outer wall of the inner ceramic tube and / or the inner wall of the outer ceramic tube are provided with a first annular linear groove. After the inner and outer ceramic tubes are fitted together, the first annular linear groove is located between the inner and outer ceramic tubes and closes to form a first annular linear channel. The heating resistance wire is disposed in the first annular linear channel. When the heating resistance wire is energized, it generates heat to heat the inner ceramic tube. The inner ceramic tube conducts heat to the outer wall of the cigarette and bakes it to produce smoke that can be inhaled into the mouth.

[0007] Preferably, the outer ceramic tube has first through holes at both ends of the first annular linear pipe, and electrode leads that electrically connect the heating resistor wire to the power supply are provided through the first through holes.

[0008] Preferably, the outer wall of the inner ceramic tube and / or the inner wall of the outer ceramic tube are further provided with a second annular linear groove. After the inner ceramic tube and the outer ceramic tube are sleeved together, the second annular linear groove is located between the inner ceramic tube and the outer ceramic tube and closes to form a second annular linear pipe. A temperature sensing wire is provided inside the second annular linear pipe.

[0009] Preferably, the outer ceramic tube has second through holes at both ends of the second annular linear pipe, and a sensing pin line for connecting the temperature sensing line to the control circuit is provided through the second through holes.

[0010] Preferably, the inner ceramic tube and the outer ceramic tube are made of dense ceramic material.

[0011] Preferably, the inner ceramic tube and / or the outer ceramic tube are made of silicon nitride ceramic material.

[0012] Preferably, the inner ceramic tube is made of a ceramic material that conducts heat easily, and the outer ceramic tube is made of a ceramic material that does not conduct heat easily.

[0013] Preferably, the total thickness of the inner ceramic tube and the outer ceramic tube is set to 0.1mm-1mm.

[0014] The beneficial effects of the ceramic heating element in this electronic cigarette device are as follows: The ceramic heating element includes an inner ceramic tube, an outer ceramic tube, and a heating resistance wire. The inner wall of the outer ceramic tube is tightly fitted to the outer wall of the inner ceramic tube. The outer wall of the inner ceramic tube and / or the inner wall of the outer ceramic tube are provided with a first annular linear groove. The heating resistance wire is located in the first annular linear groove. When energized, the heating resistance wire generates heat to heat the inner ceramic tube. Because the inner ceramic tube is made of ceramic or dense ceramic material, it is not easily deformed at high temperatures, and its heat conduction is uniform, avoiding local overheating that could cause a burnt taste in the smoke. Simultaneously, because the heating resistance wire is located within the first annular linear tube between the inner and outer ceramic tubes, it is isolated from the outside environment and well protected, making it less prone to damage. Even after long-term high-temperature operation, it will not deform or loosen, preventing a decrease in heat conduction efficiency. Furthermore, the inner wall of the inner ceramic tube is smooth and will not rust or corrode. Even after long-term operation, it is not prone to the adhesion of e-liquid or tar, which could affect heat conduction efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the ceramic heating element according to Embodiment 1 of this utility model;

[0016] Figure 2 This is a three-dimensional exploded structural diagram of the ceramic heating element according to Embodiment 1 of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the ceramic heating element according to Embodiment 2 of this utility model;

[0018] Figure 4 This is a three-dimensional exploded view of the ceramic heating element in Embodiment 2 of this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0020] Example 1

[0021] like Figure 1 , Figure 2As shown, the ceramic heating element of this invention's electronic cigarette device includes an inner ceramic tube 1, an outer ceramic tube 2, and a heating resistance wire 3. The inner wall of the outer ceramic tube 2 is tightly fitted onto the outer wall of the inner ceramic tube 1. The inner wall of the inner ceramic tube 1 can insert and accommodate a cigarette. The outer wall of the inner ceramic tube 1 is provided with a first annular linear groove 11. The heating resistance wire 3 is disposed within the first annular linear groove 11. When energized, the heating resistance wire 3 generates heat to heat the inner ceramic tube 1. The inner ceramic tube 1 conducts heat to the outer wall of the cigarette and bakes it, producing smoke that can be inhaled into the mouth. After the inner ceramic tube 1 and the outer ceramic tube 2 are fitted together, the first annular linear groove 11 is located between the inner ceramic tube 1 and the outer ceramic tube 2. The opening of the first annular linear groove 11 is covered and closed to form a first annular linear channel. Both the inner ceramic tube 1 and the outer ceramic tube 2 are sintered from dense ceramic material. The heating resistance wire 3 is formed by pouring heating resistance slurry into the first annular linear pipe and then sintering it. This heating resistance slurry is made of a resistive material that easily heats up when energized. Specifically, the heating resistance slurry consists of metal powder and an organic carrier. The metal powder includes nickel powder, copper powder, silver powder, etc., and the organic carrier mainly consists of solvent, resin, and additives. In this embodiment, the inner ceramic tube 1 and the outer ceramic tube 2 can be preformed into green blanks before the heating resistance slurry is poured into the first annular linear pipe. After shaping, the three are sintered together as a single unit. Specifically, the inner ceramic tube 1 and the outer ceramic tube 2 can be formed by sintering silicon nitride ceramic material, which has good thermal conductivity.

[0022] The outer ceramic tube 2 has first through holes 21 at both ends of the first annular linear groove 11, and electrode leads 31 that electrically connect the heating resistor wire 3 to the power supply are provided through the first through holes 21.

[0023] The total thickness of the inner and outer ceramic tubes is set to 0.1mm-1mm, which provides good thermal conductivity. Preferably, the total thickness of the inner and outer ceramic tubes is set to 0.2mm-0.5mm.

[0024] In this embodiment, the first annular linear groove 11 or the first annular linear pipe is a spiral groove or spiral pipe formed around the inner ceramic tube 1 or the outer ceramic tube 2 in a circumferential manner.

[0025] The heating resistor wire of this invention is located in the first annular linear groove 11 or the first annular linear pipe between the inner ceramic tube and the outer ceramic tube. It is isolated from the outside environment and well protected, making it less prone to damage. Furthermore, it will not deform or loosen after long-term high-temperature operation, thus avoiding a decrease in heat conduction efficiency. The inner ceramic tube 1 and the outer ceramic tube 2 are made of dense ceramic material. Because the inner ceramic tube is made of dense ceramic material, its heat conduction is uniform, preventing localized overheating that could cause a burnt smell when smoking. At the same time, the inner wall of the inner ceramic tube is smooth and will not rust or corrode. Even after long-term operation, it is not easy for tar or soot to adhere, thus affecting heat conduction efficiency.

[0026] Example 2

[0027] like Figure 3 , Figure 4 As shown, in this embodiment, based on the first embodiment described above, the outer wall of the inner ceramic tube 1 is further provided with a second annular linear groove 12. After the inner ceramic tube 1 and the outer ceramic tube 2 are sleeved together, the second annular linear groove 12 is located between the inner ceramic tube 1 and the outer ceramic tube 2. The opening of the second annular linear groove 12 is covered and closed to form a second annular linear pipe. A temperature sensing wire 4 is provided inside the second annular linear pipe. The temperature sensing wire 4 can sense the temperature change of the inner ceramic tube 1 and transmit it to the control circuit. The temperature sensing wire 4 is used to detect the heating temperature of the inner ceramic tube 1 in order to further regulate the heating temperature of the cigarette. The temperature sensing wire 4 is made by sintering the thermistor slurry into the second annular linear pipe.

[0028] The outer ceramic tube 2 has second through holes 22 at both ends of the second annular linear groove 12, and a sensing pin line 41 is provided through the second through hole 22 to connect the temperature sensing line 4 to the control circuit.

[0029] The temperature sensing line 4 is formed by sintering the thermistor slurry into the second annular linear pipe. The slurry is made of a temperature-sensitive thermistor material. The thermistor material can be a semiconductor thermistor material such as barium titanate ceramic, manganese oxide, cobalt oxide, nickel oxide, etc., or a metal thermistor material such as platinum metal, nickel metal, or an alloy thermistor material such as nickel-chromium alloy, iron-chromium-aluminum alloy, etc.

[0030] In this embodiment, the second annular linear groove 12 or the second annular linear pipe is a spiral groove or spiral pipe formed around the inner ceramic tube 1 or the outer ceramic tube 2 in a circumferential direction, and the second annular linear groove 12 is arranged in parallel with the first annular linear groove 11.

[0031] In other embodiments, the first annular linear groove may also be provided on the inner wall of the outer ceramic tube (not shown in the figure). Similarly, the second annular linear groove may also be provided on the inner wall of the outer ceramic tube.

[0032] In other embodiments, the first annular linear groove may also be partially located on the outer wall of the inner ceramic tube and partially located on the inner wall of the outer ceramic tube, with the two parts enclosing each other to form an inner groove for accommodating the heating resistor wire (not shown in the figure). Similarly, the second annular linear groove may also be partially located on the outer wall of the inner ceramic tube and partially located on the inner wall of the outer ceramic tube, with the two parts enclosing each other to form an inner groove for accommodating the temperature sensing wire.

[0033] In other embodiments, the inner ceramic tube and the outer ceramic tube can be made into green blanks one after the other and connected together before being sintered. Then, the heating resistance slurry is poured into the first annular linear pipe, and after shaping, it is sintered again to become a whole.

[0034] In other embodiments, the inner ceramic tube can be made into a green tube and sintered first. Then, the outer ceramic tube green tube is made on the sintered inner ceramic tube and sintered a second time to form a whole. Then, the heating resistor slurry is poured into the first annular linear pipe, and after shaping, it is sintered again to form a whole.

[0035] In other embodiments, the first annular linear groove 11 or the first annular linear pipe may also be a groove or pipe formed along the axial direction of the inner ceramic tube or the outer ceramic tube. The groove or pipe may only be partially arranged on the wall of the inner ceramic tube or the outer ceramic tube. If it is necessary to fill the entire wall, multiple sets of such grooves or pipes are required.

[0036] In other embodiments, the inner ceramic tube may be made of a thermally conductive ceramic material, and the outer ceramic tube may be made of a thermally inconductive ceramic material.

[0037] The above description is merely a preferred embodiment of the present utility model, and the specific embodiments described above are not intended to limit the present utility model. Various modifications and variations can be made within the scope of the technical concept of the present utility model. All refinements, modifications, or equivalent substitutions made by those skilled in the art based on the above description are within the scope of protection of the present utility model.

Claims

1. A ceramic heating element for an electronic cigarette device, characterized in that, The device includes an inner ceramic tube, an outer ceramic tube, and a heating resistor wire. The inner wall of the outer ceramic tube is tightly fitted onto the outer wall of the inner ceramic tube. The inner wall of the inner ceramic tube can insert and accommodate a cigarette. The outer wall of the inner ceramic tube and / or the inner wall of the outer ceramic tube are provided with a first annular linear groove. After the inner and outer ceramic tubes are fitted together, the first annular linear groove is located between the inner and outer ceramic tubes and closes to form a first annular linear channel. The heating resistor wire is disposed in the first annular linear channel. When the heating resistor wire is energized, it generates heat to heat the inner ceramic tube. The inner ceramic tube conducts heat to the outer wall of the cigarette and bakes it to produce smoke that can be inhaled into the mouth.

2. The ceramic heating element of the electronic cigarette device according to claim 1, characterized in that, The outer ceramic tube has first through holes at both ends of the first annular linear pipe, and electrode leads that electrically connect the heating resistor wire to the power supply are provided through the first through holes.

3. The ceramic heating element of the electronic cigarette device according to claim 1, characterized in that, The outer wall of the inner ceramic tube and / or the inner wall of the outer ceramic tube are further provided with a second annular linear groove. After the inner ceramic tube and the outer ceramic tube are sleeved together, the second annular linear groove is located between the inner ceramic tube and the outer ceramic tube and closes to form a second annular linear pipe. A temperature sensing wire is provided inside the second annular linear pipe.

4. The ceramic heating element of the electronic cigarette device according to claim 3, characterized in that, The outer ceramic tube has second through holes at both ends of the second annular linear pipe, and through the second through holes are sensing pins that connect the temperature sensing line to the control circuit.

5. The ceramic heating element of the electronic cigarette device according to claim 1, characterized in that, The inner and outer ceramic tubes are made of dense ceramic material.

6. The ceramic heating element of the electronic cigarette device according to claim 1, characterized in that, The inner ceramic tube and / or outer ceramic tube are made of silicon nitride ceramic material.

7. The ceramic heating element of the electronic cigarette device according to claim 1, characterized in that, The inner ceramic tube is made of a ceramic material that conducts heat easily, while the outer ceramic tube is made of a ceramic material that does not conduct heat well.

8. The ceramic heating element of the electronic cigarette device according to claim 1, characterized in that, The total thickness of the inner ceramic tube and the outer ceramic tube is set to 0.1mm-1mm.

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