Heating unit and heating non-combustion device

Abstract

The utility model relates to the technical field of aerosol generating equipment, in particular to a heating unit and a heating non-combustion device.The heating unit comprises a cup body, the cup body comprises a side part and a bottom, the bottom is arranged at one end of the side part, and a heating cavity with one end open is defined by the bottom and the side part; the heating cavity is used for accommodating and heating an aerosol substrate; the cover body is arranged on one side, deviating from the heating cavity, of the bottom; and the heating layer is arranged between the cover body and the bottom, and the heating layer and the cover body are at least co-fired into a whole. The heating layer is arranged between the cover body and the bottom and is at least co-fired with the cover body into a whole, so that the heating layer is not easy to separate from the cover body and the bottom due to the expansion degree difference after being heated in the use process, the use stability of the heating unit is favorably improved, and the service life of the heating unit is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aerosol generating equipment, in particular to a heating unit and a heat-not-burn device. BACKGROUND

[0002] At present, the heating layer of the heating unit adopted by some heat-not-burn devices is manufactured based on a thick film printing process. The heating line in the thick film printing process is often directly deposited on a ceramic substrate. Due to the different expansion rates of the heating line and the ceramic substrate after being heated, there is a problem of insufficient matching degree between the ceramic substrate and the heating line, which affects the use stability of the heating unit. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heating unit and a heat-not-burn device which are helpful to improve the use stability.

[0004] According to a first aspect, a heating unit is provided in an embodiment, comprising:

[0005] a cup body, the cup body comprising a side portion and a bottom portion, the bottom portion being arranged at one end of the side portion, the bottom portion and the side portion together forming a heating cavity with an open end, the heating cavity being used for accommodating and heating aerosol substrate;

[0006] a cover body, the cover body being arranged on a side of the bottom portion away from the heating cavity;

[0007] and a heating layer, the heating layer being arranged between the cover body and the bottom portion and being integrally co-fired with at least the cover body.

[0008] In an embodiment, the bottom portion, the heating layer and the cover body are integrally co-fired.

[0009] In an embodiment, the thermal conductivity of the bottom portion and / or the cover body is not less than 15 W / (m·K);

[0010] and / or, the heating layer is a metal material.

[0011] In an embodiment, a fixing cavity is formed around the side of the bottom portion away from the heating cavity;

[0012] the heating layer is co-fired with the cover body to form a co-fired ceramic piece, and the co-fired ceramic piece is fixed in the fixing cavity.

[0013] In an embodiment, the bottom portion and the side portion are metal materials or ceramic materials with a thermal conductivity not less than 15 W / (m·K);

[0014] and / or, the cover body is a ceramic material with a thermal conductivity not less than 15 W / (m·K).

[0015] In one embodiment, the side portion is made of ceramic material, and the co-fired ceramic piece is fixedly arranged in the fixing cavity;

[0016] Alternatively, the side portion is made of metal material, and the side portion extends in a direction away from the heating cavity to form a fixing protrusion, the fixing protrusion encloses the fixing cavity, and the fixing protrusion is used to fix the co-fired ceramic piece in the fixing cavity.

[0017] In one embodiment, a surface of the co-fired ceramic piece close to the side portion is provided with a heat-conducting layer, and the heat conductivity of the heat-conducting layer is greater than that of the co-fired ceramic piece.

[0018] In one embodiment, the heat-conducting layer is a heat-conducting plating layer plated on the surface of the co-fired ceramic piece;

[0019] Alternatively, the heat-conducting layer is a heat-conducting coating layer coated and co-fired and solidified on the surface of the co-fired ceramic piece.

[0020] In one embodiment, the side portion is also provided with a heating layer, and the side portion is co-fired with the heating layer arranged therein as a whole.

[0021] In one embodiment, the cavity wall of the heating cavity is provided with an air passage, the air passage is in communication with the opening of the heating cavity, and the air passage is used for flowing air outside the heating unit into the heating cavity and into the aerosol substrate contained in the heating cavity.

[0022] According to a second aspect, in one embodiment, a heating non-combustion device is provided, comprising:

[0023] a housing;

[0024] a heating unit arranged in the housing, the heating unit being any one of the above-mentioned embodiments;

[0025] and an energy supply unit for supplying energy to the heating layer.

[0026] According to the heating unit of the above-mentioned embodiments, since the heating layer is arranged between the cover body and the bottom portion, the heat generated by the heating layer can be conducted to the heating cavity through the bottom portion to heat the aerosol substrate, and since the heating layer is at least co-fired with the cover body as a whole, the difference in expansion degree due to the difference in expansion rate during use is less likely to cause the heating layer to separate from the cover body and the bottom portion, which helps to improve the use stability of the heating unit and prolong the service life of the heating unit. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of the heating unit of one embodiment;

[0028] Figure 2An exploded structural schematic view of a heating unit according to an embodiment;

[0029] Figure 3 A sectional view of a heating unit according to an embodiment;

[0030] Figure 4 A structural schematic view of a heating unit according to another embodiment;

[0031] Figure 5 A structural schematic view of a heating unit according to an embodiment in an unassembled state;

[0032] Figure 6 A sectional view of a heating unit according to another embodiment;

[0033] Figure 7 A structural schematic view of a heat-not-burn device according to an embodiment;

[0034] Figure 8 A structural schematic view of a heat-not-burn device according to another embodiment.

[0035] In the drawings: 100, cup body; 110, side portion; 111, fixing protrusion; 1111, protruding portion; 112, first protrusion; 113, raised edge; 120, bottom portion; 121, second protrusion; 130, heating cavity; 131, air passage; 1311, air inlet groove; 1312, air guiding gap; 140, fixing cavity; 150, cover body; 160, co-fired ceramic piece;

[0036] 200, heating layer; 210, lead wire;

[0037] 300, housing; 310, substrate socket;

[0038] 400, energy supply unit;

[0039] 500, mounting piece; 510, mounting tube; 520, base; 530, top cover; 531, through hole; 532, limiting portion; 540, mounting cavity; 541, limiting protrusion; 550, isolation space;

[0040] 600, aerosol substrate. DETAILED DESCRIPTION

[0041] The application will be described in further detail below with specific reference being made to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the application. However, it will be apparent to one skilled in the art that the features described herein can be practiced without the specific details given herein. In other instances, well-known features are not described in detail in order to avoid obscuring the application. Some operations are not shown or described in detail in the specification because they are not necessary for understanding the application, and they are sufficiently described in the literature or are known to one skilled in the art.

[0042] In addition, features, operations, or steps described in the specification can be combined in any suitable manner without departing from the scope of the application. Similarly, steps in the methods described herein can be performed in any suitable order without departing from the scope of the application. The various illustrative sequences, orders, combinations of steps, etc., that can be described in this specification are not meant to be limiting. Rather, the steps, operations, or features performed in the various sequences, orders, or combinations of steps, etc., can be performed in any suitable order, or can be performed simultaneously, and the described implementations are illustrative.

[0043] The serial numbers of components in this specification, such as "first", "second", etc., are used only to distinguish the described objects, and do not have any sequential or technical meaning. The application refers to "connection" and "coupling", unless otherwise specified, which includes direct and indirect connection (coupling).

[0044] In the embodiments of the application, by arranging the heating layer 200 between the cover 150 and the bottom 120, the heating layer 200 can heat the aerosol substrate 600 in the heating cavity 130 through heat conduction during use. Since the heating layer 200 is at least integrally fired with the cover 150, it is not easy to separate from the cover 150 and the bottom 120 due to different degrees of thermal expansion, which helps to improve the use stability of the heating unit and prolong the service life of the heating unit.

[0045] Embodiments of the heating unit in the application:

[0046] In one embodiment, referring to Figures 1-8 The heating unit includes a cup body 100, a cover 150, and a heating layer 200.

[0047] The cup body 100 can be understood as the structural body of the heating unit, and the cover 150 is used to fix the heating layer 200 to the cup body 100. In one embodiment, referring to Figures 1-3The cup body 100 comprises a side portion 110 and a bottom portion 120, the bottom portion 120 is arranged at one end of the side portion 110, the bottom portion 120 and the side portion 110 jointly form a heating cavity 130 with an open end, the heating cavity 130 is used for accommodating and heating the aerosol substrate 600; and the cover body 150 is arranged on the side of the bottom portion 120 away from the heating cavity 130, the heating layer 200 is arranged between the bottom portion 120 and the cover body 150, and is at least integrally sintered with the cover body 150.

[0048] The heating layer 200 is arranged between the bottom portion 120 and the cover body 150, the heat generated by the heating layer 200 can be conducted to the heating cavity 130 through the bottom portion 120 to heat the aerosol substrate 600 in the heating cavity 130; and the heating layer 200 is at least integrally sintered with the cover body 150 to at least limit the position of the heating layer 200 through the combination with the cover body 150, so that the heating layer 200 is not easy to separate due to the different thermal expansion degrees of the cover body 150 and the bottom portion 120 when the heating unit is heated, which helps to improve the use stability of the heating unit and prolong the service life.

[0049] In an embodiment, please refer to Figures 1-3 The bottom portion 120, the heating layer 200 and the cover body 150 are integrally sintered to improve the fixing effect of the bottom portion 120 and the cover body 150 on the heating layer 200, which helps to reduce the risk of separation of the heating layer 200.

[0050] In order to improve the heating efficiency of the heating unit and reduce heat loss, in some embodiments, the thermal conductivity of the bottom portion 120 and / or the cover body 150 is not less than 15 W / (m·K), that is, the bottom portion 120 and / or the cover body 150 can adopt a material with a thermal conductivity of not less than 15 W / (m·K), such as aluminum nitride, silicon carbide, alumina and other high-thermal-conductivity ceramic materials. Those skilled in the art should know that, based on the need for sintering, the bottom portion 120 and the cover body 150 can adopt the same material or similar materials to improve the matching degree between the bottom portion 120 and the cover body 150 and avoid stress problems caused by too large difference in the thermal expansion coefficient of the materials used.

[0051] In another embodiment, please refer to Figure 4 and Figure 5 The side of the bottom portion 120 away from the heating cavity 130 is surrounded to form a fixing cavity 140, the heating layer 200 and the cover body 150 are integrally sintered to form an integrally sintered ceramic piece 160, and the integrally sintered ceramic piece 160 is fixed in the fixing cavity 140. In other embodiments, the heating layer 200 can also be integrally sintered inside the cover body 150 as needed to reduce the risk of separation of the heating layer 200 and the cover body 150.

[0052] By co-firing the heating layer 200 with the cover 150 into the co-fired ceramic piece 160 and fixing the co-fired ceramic piece 160 in the fixing cavity 140, the heating layer 200 can be fixed in the fixing cavity 140 and is not easy to expand and separate.

[0053] In order to reduce the thermal resistance of the heating assembly, the cup 100 and the cover 150 can be made of a material with high thermal conductivity. In some embodiments, the material of the side 110, the bottom 120 and the cover 150 can be a ceramic material with a thermal conductivity not less than 15 W / (m·K), such as aluminum nitride, silicon carbide, alumina, etc. The co-fired ceramic piece 160 formed by co-firing can be fixed in the fixing cavity 140 by high-temperature-resistant ceramic glue.

[0054] In other embodiments, the material of the bottom 120 and the side 110 can also be a metal material with a thermal conductivity not less than 15 W / (m·K), such as copper, aluminum alloy, etc.

[0055] In one embodiment, please refer to Figure 4 and Figure 5 The side 110 of the metal material extends in a direction away from the heating cavity 130 to form a fixing protrusion 111, and the fixing protrusion 111 encloses the fixing cavity 140. The co-fired ceramic piece 160 can be clamped and fixed in the fixing cavity 140 by the fixing protrusion 111.

[0056] For example, the side 110 can be provided with the fixing protrusion 111 extending in a direction away from the heating cavity 130. The fixing protrusion 111 is provided with a protruding portion 1111 extending in a direction away from the heating cavity 130. After the co-fired ceramic piece 160 is loaded into the fixing cavity 140, the protruding portion 1111 is bent in a direction close to the co-fired ceramic piece 160, so that the bent protruding portion 1111 fixes the co-fired ceramic piece 160 in the fixing cavity 140.

[0057] Those skilled in the art should know that the fixing manner of the co-fired ceramic piece 160 in the fixing cavity 140 can be bonding, welding, clamping, threaded connection or other connection methods, as long as it can meet the design and use requirements.

[0058] In order to further improve the heat conduction effect of the co-fired ceramic piece 160 to the bottom 120, in an embodiment, the surface of the co-fired ceramic piece 160 close to the side of the bottom 120 can be provided with a heat conduction layer, and the heat conduction rate of the heat conduction layer is greater than that of the co-fired ceramic piece 160. In some embodiments, the heat conduction layer can be a heat conduction plating layer, such as a copper plating layer, plated on the surface of the co-fired ceramic piece 160. In other embodiments, the heat conduction layer can also be a heat conduction coating layer, such as a graphite coating layer, coated and co-fired and solidified on the surface of the co-fired ceramic piece 160. Those skilled in the art can understand that the formation method and the material of the heat conduction layer are not limited, and any method that can improve the heat conduction effect of the co-fired ceramic piece 160 to the bottom 120 is acceptable.

[0059] For the heating layer 200, those skilled in the art should know that the shape and heating method of the heating layer 200 are not limited, for example, the heating method of the heating layer 200 can be resistance heating or electromagnetic induction heating, and the shape of the heating layer 200 can be serpentine, circular, square or other shapes.

[0060] In some embodiments, the material of the heating layer 200 can be metal, such as tungsten, platinum, etc. The heating layer 200 uses metal materials such as tungsten and platinum that have good chemical stability at high temperatures, which not only can adapt to the heating temperature in the co-firing process, but also helps to maintain stable heating in use and improve the heating effect.

[0061] In some further embodiments, please refer to Figure 6 The heating layer 200 is connected with a lead wire 210, and the lead wire 210 is led out from the cover 150 to supply power to the heating layer 200 through the lead wire 210. When the current passes through the heating layer 200, the heating layer 200 generates heat based on the Joule heating effect when the current passes through. In other embodiments, the lead wire 210 can also be led out from the side 110 or other components. Instead of the lead wire 210, a contact or other conductive element can also be used for conduction, and the conductive element has an electrical contact part exposed to the outside of the cup 100 or the cover 150.

[0062] In an embodiment, the heating layer 200 can also be provided in the side 110 to increase the heating area of the cup 100. In some embodiments, the side 110 and the heating layer 200 provided therein can be co-fired as a whole, and the specific method can refer to the setting method of the heating layer 200 co-fired between the bottom 120 and the cover 150, which will not be described here.

[0063] In an embodiment, please refer to Figure 3 and Figure 6The cavity wall of the heating cavity 130 is provided with an air passage 131, which is in communication with the opening of the heating cavity 130. The air passage 131 is used for the airflow outside the heating unit to flow into the heating cavity 130 and enter the aerosol substrate 600 contained in the heating cavity 130. By providing the air passage 131, the heating unit can heat the aerosol substrate 600 by hot airflow, which helps to improve the heating uniformity and heating efficiency.

[0064] Exemplarily, the side portion 110 is provided with a first protrusion 112 on the side thereof facing the heating cavity 130. The first protrusions 112 are arranged at intervals in the circumferential direction of the heating cavity 130, so that the adjacent first protrusions 112 can form an air inlet groove 1311 in communication with the opening of the heating cavity 130, and the area surrounded by each first protrusion 112 can be used for inserting the aerosol substrate 600. The bottom portion 120 is provided with a second protrusion 121 on the side thereof facing the heating cavity 130. The second protrusion 121 can be arranged in one or multiple intervals, so that when the aerosol substrate 600 is inserted into the heating cavity 130, the aerosol substrate 600 has a gas guiding gap 1312 with the bottom portion 120. The gas guiding gap 1312 is in communication with the air inlet groove 1311 to form the air passage 131. After the airflow enters the air passage 131 through the opening of the heating cavity 130, the airflow can be heated during the flow process, and the formed hot airflow enters and heats the aerosol substrate 600, so as to improve the heating uniformity and heating efficiency.

[0065] As can be understood by those skilled in the art, the first protrusion 112 can be arranged only on the cavity wall of the heating cavity 130 near the opening (as shown in Figure 6 The first protrusion 112 can also be arranged only on the cavity wall of the heating cavity 130 away from the opening, or the first protrusion 112 can be arranged on the entire cavity wall of the heating cavity 130 to form the air inlet groove 1311. The gas guiding gap 1312 can also be formed by the groove arranged on the bottom portion 120. In summary, the arrangement of the air passage 131 is not limited, and any arrangement that can meet the design and use requirements can be used.

[0066] Embodiments of the heat-not-burn device in the present application:

[0067] In one embodiment, please refer to Figure 7 and Figure 8 The heat-not-burn device includes a housing 300, a heating unit, and an energy supply unit 400. The heating unit is arranged in the housing 300, and the heating unit is any of the heating units described above. The energy supply unit 400 is used to supply energy to the heating layer 200. The energy supply unit 400 can also be arranged in the housing 300.

[0068] In one embodiment, please refer to Figure 7 and Figure 8The housing 300 is provided with a mounting member 500, and the mounting member 500 has a mounting cavity 540 for mounting the heating unit. When the heating unit is mounted in the mounting cavity 540, the heating unit has an isolation space 550 outside. The isolation space 550 can form an air insulation layer for the heating unit, which helps to reduce heat loss when the heating unit is heated and improve heating efficiency.

[0069] Exemplarily, the housing 300 is provided with a substrate socket 310, and the housing 300 is provided with a mounting member 500 corresponding to the substrate socket 310. The mounting member 500 includes a mounting tube 510 and a base 520 and a top cover 530 mounted at both ends of the mounting tube 510, respectively. The mounting tube 510, the base 520 and the top cover 530 jointly form a mounting cavity 540. The top cover 530 is provided with a through hole 531 corresponding to the substrate socket 310. When the heating unit is mounted in the mounting cavity 540, the heating cavity 130 communicates with the substrate socket 310 through the through hole 531. The mounting tube 510, the base 520 and the top cover 530 can be made of materials with low thermal conductivity, such as PEEK (polyether ether ketone) and PPSU (polyphenyl sulfone), to improve the heat preservation effect and reduce heat loss.

[0070] The inner side wall of the mounting cavity 540 can be provided with a limiting protrusion 541 along the circumference of the mounting cavity 540. The side portion 110 is provided with a protruding edge 113 on the opening side of the heating cavity 130. The protruding edge 113 can be clamped in the limiting protrusion 541, so that the heating unit can be hung in the mounting cavity 540 to form an isolation space 550 between the outer side of the heating unit and the cavity wall of the mounting cavity 540. The top cover 530 can also have a limiting portion 532, which can clamp the protruding edge 113 in cooperation with the limiting protrusion 541, so as to fix the heating unit by limiting the protruding edge 113.

[0071] In some embodiments, please refer to Figure 8 The mounting tube 510 and the base 520 can be replaced by a mounting cup.

[0072] In a further embodiment, the cavity wall of the mounting cavity 540 can be provided with a heat radiation reflection layer to improve the heat preservation effect of the heating unit. For example, an aluminum foil can be provided on the inner wall of the mounting tube 510 as a heat radiation reflection layer.

[0073] Those skilled in the art can understand that the energy supply unit 400 is used to supply energy to the heat generating layer 200, and the energy supply unit 400 can have different forms according to the different heat generating principles of the heat generating layer 200, for example: if the heat generating layer 200 is an electric resistance heat generating layer, the energy supply unit 400 can be an electric core or a collection of related components such as an electric core and a circuit board, etc., to supply electric energy to the heat generating layer 200; if the heat generating layer 200 is an electromagnetic induction heat generating layer, the energy supply unit 400 can be a collection of an electromagnetic coil and an electric core or a collection of an electromagnetic coil, an electric core, a circuit board and other related components, to supply an induced magnetic field to the heat generating layer 200 through the electromagnetic coil, so that the heat generating layer 200 can generate heat through induced eddy current; in short, the form of the energy supply unit 400 is not limited, as long as it can supply the heat generating layer 200 with the energy required for heat generation.

[0074] The above application uses specific examples to illustrate the present application, which is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A heating unit, characterized by, include: The cup body includes a side and a bottom, the bottom being disposed at one end of the side, the bottom and the side together forming a heating cavity with one end open, the heating cavity being used to contain and heat the aerosol matrix; A cover body, the cover body being disposed on the bottom side opposite to the heating cavity; And a heating layer, which is disposed between the cover and the bottom, and is at least co-fired with the cover.

2. The heating unit according to claim 1, characterized in that The bottom, heating layer, and cover are fired together as one unit.

3. The heating unit according to claim 2, characterized in that The thermal conductivity of the bottom and / or the cover is not less than 15 W / (m·K); And / or, the heating layer is made of a metallic material.

4. The heating unit according to claim 1, wherein A fixed cavity is formed on the side of the bottom that is away from the heating cavity; The heating layer and the cover are co-fired to form a co-fired ceramic part, which is fixed in the fixing cavity.

5. The heating unit according to claim 4, characterized in that The bottom and the sides are made of metal or ceramic materials with a thermal conductivity of not less than 15 W / (m·K); And / or, the cover is a ceramic material with a thermal conductivity of not less than 15 W / (m·K).

6. The heating unit according to claim 5, characterized in that The side portion is made of ceramic material, and the co-fired ceramic part is bonded and fixed in the fixing cavity; Alternatively, the side portion is made of metal, and the side portion extends away from the heating cavity to form a fixing protrusion. The fixing protrusion surrounds and forms the fixing cavity, and the fixing protrusion is used to fix the co-fired ceramic part in the fixing cavity.

7. The heating unit according to claim 4, wherein A thermally conductive layer is provided on the surface of the co-fired ceramic part near the bottom, and the thermal conductivity of the thermally conductive layer is greater than that of the co-fired ceramic part.

8. The heating unit according to claim 7, characterized in that The thermally conductive layer is a thermally conductive coating deposited on the surface of the co-fired ceramic part; Alternatively, the thermally conductive layer is a thermally conductive coating applied to and co-fired and cured on the surface of the co-fired ceramic part.

9. The heating unit according to any one of claims 1 to 8, characterized in that A heating layer is also provided in the side portion, and the side portion and the heating layer therein are fired together as one unit.

10. The heating unit according to any one of claims 1 to 8, characterized in that An air passage is provided on the wall of the heating chamber, and the air passage is connected to the opening of the heating chamber. The air passage is used to allow airflow from outside the heating unit to flow into the heating chamber and enter the aerosol matrix contained in the heating chamber.

11. A heat-not-burn device, characterized in that include: case; A heating unit, wherein the heating unit is disposed in the housing, and the heating unit is the heating unit according to any one of claims 1-10; And an energy supply unit, which supplies energy to the heating layer.

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