CN221307285U - Air heater and heating non-combustion device - Google Patents

Abstract

The utility model discloses an air heater and a heating non-combustion device, wherein the air heater comprises: the heating body is made of conductive ceramic materials, a plurality of ventilation structures through which gas passes are distributed in the heating body, and the heating body is used for heating the gas flowing through the ventilation structures to form hot gas flow; the first electrode is made of conductive ceramic materials and is sintered on the heating body; the second electrode is made of conductive ceramic materials, is sintered on the heating body and is arranged at intervals with the first electrode; the shell is made of insulating ceramic materials, is arranged around the heating body along the circumferential direction of the heating body and is sintered into a whole with the heating body, and the inner circumferential wall of the shell and the outer circumferential wall of the heating body are arranged at opposite intervals; the heat insulation layer is made of nonmetal heat insulation materials and is positioned between the inner peripheral wall of the shell and the outer peripheral wall of the heating body. The air heater has the advantages of high heating efficiency, good atomization taste and environmental protection.

Description

Air heater and heating non-combustion device

Technical Field

The utility model relates to the technical field of electronic atomization, in particular to an air heater and a heating non-combustion device.

Background

The heating non-combustion device is a heating non-combustion device which can form smokeable aerosol by heating herbal products (such as low-temperature non-combustion cigarettes) at a low temperature of 200-400 ℃, and compared with the traditional combustion type cigarettes, harmful components in the aerosol generated by the heating non-combustion device are far lower than those in the traditional combustion type cigarettes, so that the adverse effects of the traditional cigarettes on human bodies can be greatly reduced by using the heating non-combustion device.

In the related art, the heating modes of the heating non-combustion device are generally divided into contact heating and non-contact heating, wherein the most common non-contact heating mode is air heating, that is, hot air is formed by an air heater, and then the hot air is introduced into the herbal product to realize heating and atomization of the herbal product, so that aerosol which can be pumped by a user is generated.

Most of the air heaters on the market currently use metal heating resistors as ceramic heating structures of heating sources, namely, metal heating resistors (such as metal heating wires and metal heating films) are attached to the inner wall of a hollow insulating ceramic body, and when the air heater works, air flowing through the cavity inside the insulating ceramic body is heated by heat generated by the metal heating resistors, so that hot air for heating herbal products is formed. However, this type of air heater generally has the following drawbacks:

1. After the air heater taking the metal heating resistor as a heating source is electrified, the metal heating resistor is required to heat the inner wall of the insulating ceramic body, heat is radiated outwards to heat air flowing through the air heater, and the heat is transferred to the insulating ceramic body through the conduction process from the metal heating resistor, so that heat loss is more, and the heating efficiency of the air heater is lower;

2. Because the metal heating resistor is made of metal, the formed hot air is usually mixed with metal peculiar smell, so that aerosol sucked by a user is also mixed with metal peculiar smell, and the sucking taste of the user is reduced;

3. When the air heater becomes a waste product after the service life is finished, the discarded air heater can cause metal pollution to the environment due to the existence of the metal heating resistor.

Disclosure of utility model

The utility model mainly aims to provide an air heater and a heating non-combustion device, and aims to solve the technical problems that the heating efficiency of the existing air heater using a metal heating resistor as a heating source is low, the formed hot air is mixed with metal peculiar smell, and the environment is polluted after the hot air is abandoned.

In order to achieve the above object, the present utility model provides an air heater, which is an integrated structure, comprising:

The heating body is made of conductive ceramic materials, a plurality of ventilation structures through which gas passes are distributed in the heating body, and the heating body is used for heating the gas flowing through the ventilation structures to form hot gas flow;

A first electrode made of a conductive ceramic material, the first electrode being sintered on the heating body;

The second electrode is made of conductive ceramic materials, is sintered on the heating body and is arranged at intervals with the first electrode;

A housing made of an insulating ceramic material, the housing being disposed around the heating body in a circumferential direction of the heating body and sintered integrally with the heating body, and an inner circumferential wall of the housing being disposed at an opposite interval from an outer circumferential wall of the heating body;

And the heat insulation layer is made of a nonmetallic heat insulation material and is positioned between the inner peripheral wall of the shell and the outer peripheral wall of the heating body.

Further, the ventilation structure comprises pores, and the heating body is made of porous conductive ceramic material, so that the heating body is integrally distributed with a plurality of the pores.

Further, the heating body is made of porous conductive ceramic material, and the porosity of the heating body is 45% -85%.

Further, the ventilation structure comprises airflow channels, the heating body is made of compact conductive ceramic materials, a plurality of airflow channels are distributed in the heating body at intervals, and each airflow channel penetrates through the heating body along the axial direction of the heating body.

Further, the ventilation structure comprises airflow channels, the heating body is made of porous conductive ceramic materials, a plurality of airflow channels are distributed in the heating body at intervals, and each airflow channel penetrates through the heating body along the axial direction of the heating body.

Further, the heating body is columnar, one end of the first electrode is integrally sintered with the outer wall of one end of the heating body, one end of the second electrode is integrally sintered with the outer wall of the other end of the heating body, and on the axial section of the heating body, one end of the first electrode and the sintered heating body is diagonally arranged with one end of the second electrode and the sintered heating body.

Further, the heating body is columnar, the first electrode and the second electrode are columnar, the first electrode is sintered into a whole with the outer peripheral wall of the heating body along the axial direction of the heating body, the second electrode is sintered into a whole with the outer peripheral wall of the heating body along the axial direction of the heating body, and the first electrode and the second electrode are positioned on the same axial section of the heating body.

Further, the first electrode comprises a first column strip part and a first joint part which are sequentially connected along the axial direction of the first electrode, the cross section area of the first joint part is larger than that of the first column strip part along the radial direction of the first electrode, the first column strip part is sintered into a whole with the peripheral wall of the heating body along the axial direction of the heating body, and the first joint part is used for being in pressure connection with the positive electrode of a host power supply; the second electrode comprises a second column part and a second joint part which are sequentially connected along the axial direction of the second electrode, the cross section area of the second joint part is larger than that of the second column part along the radial direction of the second electrode, the second column part and the peripheral wall of the heating body are sintered into a whole along the axial direction of the heating body, and the second joint part is used for being in pressure connection with the negative electrode of a host power supply.

Further, a first mounting groove and a second mounting groove which are arranged at intervals are formed in the peripheral wall of the heating body, the first mounting groove and the second mounting groove penetrate through the heating body in the axial direction of the heating body, the first electrode is embedded in the first mounting groove and is sintered into a whole with the heating body, and the second electrode is embedded in the second mounting groove and is sintered into a whole with the heating body.

Further, the air flow channels are uniformly arranged at intervals.

Further, the diameter of each air flow channel is 0.2 mm-0.9 mm.

Further, the shape and the size of each airflow channel are the same.

Further, the material of the heat insulation layer comprises any one of silica aerogel, aluminum oxide aerogel, titanium dioxide aerogel, silicon carbide aerogel, titanium carbide aerogel, ceramic fiber and quartz fiber.

Further, the shell includes barrel, is annular first lid and is annular second lid, the barrel just around the setting of heating member the inner peripheral wall of barrel with the relative interval setting of outer peripheral wall of heating member, first lid sinter in the top of barrel just the inner peripheral wall of first lid with the outer peripheral wall sintering of the upper end of heating member becomes integrative, the second lid sinter in the bottom of barrel just the inner peripheral wall of second lid with the outer peripheral wall sintering of the lower extreme of heating member becomes integrative, the insulating layer fill in the inner peripheral wall of barrel first lid the outer peripheral wall of heating member and the space that the second lid encloses jointly.

In order to achieve the above object, the present utility model further provides a heating non-combustion device, which comprises a mounting housing, a host power supply and the air heater, wherein the host power supply and the air heater are both mounted in the mounting housing, an air inlet hole communicated with the outside is formed in the outer wall of the mounting housing, a containing cavity capable of containing herbal products is formed in the upper end of the mounting housing, the first electrode and the second electrode are respectively and electrically connected with the host power supply, and the air inlet hole is communicated with the containing cavity through the ventilation structure.

Compared with the prior art, the utility model has at least the following beneficial effects:

1. Compared with the traditional air heater with the metal heating resistor, the heating body adopted by the technical scheme of the utility model is made of the conductive ceramic material, and can directly generate heat integrally after being electrified, the secondary conduction process from the metal heating resistor to the insulating ceramic body does not exist, the heat loss is low, and the heat generated by the electrified heating body can rapidly heat the gas flowing through the inside of the heating body into the hot air flow with the required temperature, so that the air heater provided by the embodiment of the utility model has higher heating efficiency;

2. In the technical scheme of the utility model, the heating body for forming the hot air flow is made of the conductive ceramic material without peculiar smell, so that the formed hot air flow is not mixed with peculiar smell, and further aerosol sucked by a user is not mixed with peculiar smell, thereby effectively improving the sucking taste of the user;

3. the air heater provided by the embodiment of the utility model is of an integrated structure without metal, the heating body, the first electrode, the second electrode and the shell are all made of ceramic materials, and the heat insulation layer is made of non-metal heat insulation materials, so that compared with the metal materials, the ceramic materials and the non-metal heat insulation materials are more environment-friendly, and therefore, the air heater provided by the embodiment of the utility model can not cause metal pollution to the environment even being abandoned;

4. In the technical scheme of the utility model, the heat insulation layer made of the nonmetallic heat insulation material is clamped between the shell and the heating body, so that the heat dissipation in the working process of the heating body can be effectively reduced, the heating body can be subjected to heat preservation, and the heating efficiency of the air heater is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an air heater according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an air heater according to an embodiment of the present utility model;

FIG. 3 is an exploded view of an air heater according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of an air heater according to another embodiment of the present utility model;

FIG. 5 is a cross-sectional view of an air heater according to another embodiment of the present utility model;

FIG. 6 is an exploded view of an air heater according to another embodiment of the present utility model;

FIG. 7 is a cross-sectional view of an air heater according to yet another embodiment of the present utility model;

FIG. 8 is a cross-sectional view of an air heater according to yet another embodiment of the present utility model;

FIG. 9 is a schematic diagram of a heating nonflammable device according to an embodiment of the present utility model.

Reference numerals illustrate:

1-heating body, 10-ventilation structure, 101-pore, 102-air flow channel, 11-first mounting groove, 12-second mounting groove;

2-first electrode, 21-first column bar, 22-first joint;

3-second electrode, 31-second column part, 32-second joint part;

4-a shell, 41-a first cover body, 42-a second cover body and 43-a cylinder body;

5-a heat insulation layer;

6, a mounting shell, 61-an air inlet hole and 62-an accommodating cavity;

7-host power supply, 71-control circuit board, 72-battery.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is included in the embodiment of the present utility model, the directional indication is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, when an element is referred to as being "fixed to" another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, if "and/or", "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B ", including a scheme, or B scheme, or a scheme where a and B meet simultaneously.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1-2, fig. 4-5 and fig. 7-8, an embodiment of the present utility model provides an integrated air heater, specifically, the air heater is a sintered metal-free integrated structure, and is used for generating a hot air flow, so as to heat and atomize a herbal product by using the hot air flow to form an aerosol for a user to inhale. Specifically, the air heater includes a heating body 1 made of a conductive ceramic material, a first electrode 2 made of a conductive ceramic material, a second electrode 3 made of a conductive ceramic material, a housing 4 made of an insulating ceramic material, and a heat insulating layer 5 made of a nonmetallic heat insulating material, wherein:

A plurality of ventilation structures 10 through which the gas passes are distributed inside the heating body 1, and the heating body 1 is used for heating the gas flowing through the ventilation structures 10 to form hot gas flow;

the first electrode 2 is sintered on the heating body 1 to form a whole with the heating body 1;

The second electrode 3 is sintered on the heating body 1 to form a whole with the heating body 1, and the second electrode 3 and the first electrode 2 are arranged at intervals;

The shell 4 is arranged around the heating body 1 along the circumferential direction of the heating body 1 and is sintered into a whole with the heating body 1, and the inner circumferential wall of the shell 4 is arranged at an opposite interval with the outer circumferential wall of the heating body 1;

the insulating layer 5 is located between the inner peripheral wall of the housing 4 and the outer peripheral wall of the heating body 1.

In the present embodiment, in the specific implementation, the specific structural form of the ventilation structure 10 may be at least one of the aperture 101 (as shown in fig. 2) through which the gas can pass, and the gas flow channel 102 (as shown in fig. 5, 7-8) through which the gas can pass, as long as the use requirement can be satisfied, which is not specifically limited in the present embodiment.

In this embodiment, in the specific implementation, the material of the heat insulating layer 5 may be a non-metal heat insulating material such as silica aerogel, alumina aerogel, titania aerogel, silicon carbide aerogel, titanium carbide aerogel, ceramic fiber, and quartz fiber, so long as the use requirement can be met, which is not limited in this embodiment.

Based on the above structural design, this embodiment has the following technical effects:

1. compared with the traditional air heater with the metal heating resistor, the heating body 1 adopted in the embodiment is made of the conductive ceramic material, and can directly generate heat integrally after being electrified, a secondary conduction process from the metal heating resistor to the insulating ceramic body does not exist, the heat loss is low, and the heat generated by the electrified heating body 1 can quickly heat the gas flowing through the inside of the heating body 1 into hot air flow with the required temperature, so that the air heater provided by the embodiment has higher heating efficiency;

2. In the technical scheme of the embodiment, the heating body 1 for forming the hot air flow is made of the conductive ceramic material without peculiar smell, so that the formed hot air flow is not mixed with peculiar smell, and further aerosol sucked by a user is not mixed with peculiar smell, and the sucking taste of the user can be effectively improved;

3. The air heater provided by the embodiment is of an integrated structure without metal, the heating body 1, the first electrode 2, the second electrode 3 and the shell 4 are made of ceramic materials, the heat insulation layer 5 is made of non-metal heat insulation materials, and compared with metal materials, the ceramic materials and the non-metal heat insulation materials are more environment-friendly, so that the air heater provided by the embodiment can not cause metal pollution to the environment even being abandoned;

4. In the technical scheme of the embodiment, as the heat insulation layer 5 made of the nonmetallic heat insulation material is clamped between the shell 4 and the heating body 1, the heat dissipation of the heating body 1 in the working process can be effectively reduced by the heat insulation layer 5, and the heating body 1 can be subjected to a heat preservation effect, so that the heating efficiency of the air heater is further improved.

Alternatively, in some exemplary embodiments of the present utility model, the specific structural form of the ventilation structure 10 distributed inside the heating body 1 may be a hole 101 through which the air can pass, specifically, referring to fig. 1-2, the ventilation structure 10 includes the hole 101, and the heating body 1 is made of porous conductive ceramic material, so that a plurality of holes 101 through which the air can pass are integrally distributed from inside to outside of the heating body 1, so that when the heating body 1 is connected to an external power source (in some specific application scenarios, the external power source may be a host power source 7 in a heating non-combustion device) through the first electrode 2 and the second electrode 3, and the external air flows through the holes 101, the heating body 1 integrally heats and heats the external air flowing through the internal hole 101 into a hot air flow, and by guiding the hot air flow to the herbal product, the herbal product can be heated and atomized, thereby forming an aerosol that can be absorbed by a user.

In the present embodiment, in practice, the applicant found that when the porosity of the heating body 1 made of the porous conductive ceramic material is less than 45%, the ventilation effect of the heating body 1 is deteriorated so that the resistance of the heating body 1 is increased and the heat exchange efficiency of the gas is reduced, thereby easily giving the user a bad experience of "laborious suction" and being disadvantageous in improving the heating efficiency of the heating body 1; when the porosity of the heating body 1 is greater than 85%, the solid area available for heating the gas in the heating body 1 is reduced and the time for the gas to pass through the heating body 1 is increased, which results in a decrease in the heating efficiency of the heating body 1, and based on this finding, it is preferable that the porosity of the heating body 1 made of a porous conductive ceramic material be set to 45% to 85% in practical implementation, which is advantageous in that the ventilation effect and the heating efficiency of the heating body 1 are excellent. It should be noted that, as understood by those skilled in the art, the porosity of the porous conductive ceramic material refers to the percentage between the volume of the pores in the porous conductive ceramic material and the total volume of the porous conductive ceramic material in the natural state, and if the porosity of the porous conductive ceramic material is P, the volume of the pores in the porous conductive ceramic material is V1, and the total volume of the porous conductive ceramic material in the natural state is V2, there are:

P＝V1/V2×100％。

Alternatively, in other exemplary embodiments of the present utility model, the specific structure of the ventilation structure 10 distributed inside the heating body 1 may be an air flow channel 102 through which air can pass, specifically, referring to fig. 4 to 5, the ventilation structure 10 includes the air flow channel 102, the heating body 1 is made of a dense conductive ceramic material, the inside of the heating body 1 is provided with a plurality of air flow channels 102 arranged at intervals, and each air flow channel 102 is arranged through the heating body 1 along the axial direction of the heating body 1, so that when the heating body 1 is connected to an external power source through the first electrode 2 and the second electrode 3 and external air flows through the air flow channels 102, the heating body 1 heats up as a whole and heats the external air flowing through each air flow channel 102 into a hot air flow, and the hot air flow can heat and atomize the herbal product by guiding the herbal product, thereby forming an aerosol for a user to inhale.

Alternatively, in still other exemplary embodiments of the present utility model, the specific structure of the ventilation structure 10 distributed inside the heating body 1 may be a structure including both the pores 101 and the air flow channels 102 through which the air can pass, specifically, referring to fig. 7, the ventilation structure 10 includes the air flow channels 102 and the pores 101, the heating body 1 is made of a porous conductive ceramic material such that a plurality of pores 101 through which the air can pass are integrally distributed inside the heating body 1 from inside to outside, at the same time, a plurality of air flow channels 102 are further opened inside the heating body 1 at intervals, and each air flow channel 102 is provided through the heating body 1 in the axial direction of the heating body 1, so that when the heating body 1 is connected to an external power source through the first electrode 2 and the second electrode 3 and the external air flows through the pores 101 and the air flow channels 102 inside the heating body 1, the heating body 1 integrally heats the external air flowing through each pore 101 and each air flow channel 102 into a hot air flow, and the hot air flow is guided to the herbal product, thereby forming an aerosol that can be inhaled by a user.

It should be noted that, the porous conductive ceramic material and the dense conductive ceramic material are both conductive ceramic materials and are mature existing materials in the field, and the difference between them is that the object made of the porous conductive ceramic material is a porous structure with pores, while the object made of the dense conductive ceramic material is a dense structure without pores, and the difference is caused by different molding processes, and the molding processes of the porous conductive ceramic material and the dense conductive ceramic material are mature processes in the field, which are not repeated herein.

Further, in the embodiment in which the plurality of air flow channels 102 are provided inside the heating body 1 (as shown in fig. 4-8), in a specific implementation, the air flow channels 102 may be uniformly arranged inside the heating body 1 at intervals, or may be unevenly arranged inside the heating body 1, which may be according to actual use requirements, and preferably, the air flow channels 102 are uniformly arranged inside the heating body 1 at intervals, which is advantageous to make the resistance distribution of the heating body 1 more uniform compared to the air flow channels 102 being unevenly arranged inside the heating body 1, and further to make the heating body 1 generate heat more uniformly after being electrified, thereby being advantageous to heat the air flowing inside the heating body 1 more uniformly.

Further, in the embodiment in which the plurality of air flow passages 102 are provided inside the heating body 1 described above (as shown in fig. 4 to 8), the diameter of each air flow passage 102 may be set to 0.2mm to 0.9mm in the practical implementation. In this way, on one hand, the diameter of the air flow channel 102 can be prevented from being set too small (smaller than 0.2 mm), so that the ventilation effect of the heating body 1 is deteriorated to bring about the bad experience of "pumping effort" for the user, on the other hand, the diameter of the air flow channel 102 can be prevented from being set too large (larger than 0.9 mm), so that the number of the air flow channels 102 which can be opened by the heating body 1 with a certain volume is reduced, and further, the area available for heating the air in the heating body 1 is reduced to reduce the heating efficiency of the heating body 1, that is, the diameter of each air flow channel 102 in the heating body 1 is set to be 0.2mm to 0.9mm, which is advantageous to make the ventilation effect and the heating efficiency of the heating body 1 excellent.

Further, in the embodiment in which a plurality of air flow channels 102 are provided inside the heating body 1 (as shown in fig. 4-8), in the embodiment, the shape and size of each air flow channel 102 may be set to be the same, for example, the cross section of each air flow channel 102 may be set to be the same circle, square, triangle or ellipse. The arrangement is beneficial to reducing the processing difficulty of the heating body 1, and further beneficial to reducing the processing cost of the heating body 1.

Further, referring to fig. 8, in some exemplary embodiments of the present utility model, the heating body 1 is in a cylindrical shape (for example, may be cylindrical, prismatic, etc.), one end of the first electrode 2 is sintered integrally with an outer wall of one end of the heating body 1, one end of the second electrode 3 is sintered integrally with an outer wall of the other end of the heating body 1, and on an axial section of the heating body 1, the sintered ends of the first electrode 2 and the heating body 1 are disposed diagonally to the sintered ends of the second electrode 3 and the heating body 1. So set up for the in-process of heating member 1 circular telegram work, electric current can fully and evenly flow through whole heating member 1 for heating member 1 can more evenly generate heat after the circular telegram, thereby is favorable to more evenly heating the inside gas of flow heating member 1. In the present embodiment, it is understood that assuming that the axial section of the heating body 1 is rectangular, the end where the first electrode 2 and the heating body 1 are sintered is simply referred to as a positive electrode connection end, and the end where the second electrode 3 and the heating body 1 are sintered is simply referred to as a negative electrode connection end, the connection line between the positive electrode connection end and the negative electrode connection end can be regarded as a diagonal line of the rectangle.

Further, referring to fig. 2-3 and fig. 5-7, in other exemplary embodiments of the present utility model, the heating body 1 is in a column shape, the first electrode 2 and the second electrode 3 are both in a column shape, the first electrode 2 is sintered integrally with the outer peripheral wall of the heating body 1 along the axial direction of the heating body 1, the second electrode 3 is sintered integrally with the outer peripheral wall of the heating body 1 along the axial direction of the heating body 1, and the first electrode 2 and the second electrode 3 are located on the same axial section of the heating body 1. By the arrangement, the current can fully and uniformly flow through the whole heating body 1 in the process of the electrifying work of the heating body 1, so that the heating body 1 can generate heat more uniformly after being electrified, and the heating device is beneficial to heating the gas flowing through the heating body 1 more uniformly. In the present embodiment, it is understood that, assuming that the axial section of the heating body 1 is rectangular, the first electrode 2 and the second electrode 3 can be regarded approximately as two sides opposite to each other of the rectangle.

Further, referring to fig. 1 to 7, in some exemplary embodiments of the present utility model, the first electrode 2 includes a first pillar portion 21 and a first joint portion 22 sequentially connected along an axial direction of the first electrode 2, a cross-sectional area of the first joint portion 22 is larger than a cross-sectional area of the first pillar portion 21 along a radial direction of the first electrode 2, the first pillar portion 21 is sintered integrally with an outer peripheral wall of the heating body 1 along the axial direction of the heating body 1, and the first joint portion 22 is used for being in pressure contact with an anode of the host power supply 7; the second electrode 3 includes a second cylindrical portion 31 and a second joint portion 32 which are sequentially connected in the axial direction of the second electrode 3, the cross-sectional area of the second joint portion 32 is larger than the cross-sectional area of the second cylindrical portion 31 in the radial direction of the second electrode 3, the second cylindrical portion 31 is sintered integrally with the outer peripheral wall of the heating body 1 in the axial direction of the heating body 1, and the second joint portion 32 is used for being in pressure contact with the negative electrode of the host power supply 7.

In this embodiment, based on the above structural design, in some use scenarios of applying the air heater of this embodiment to the heating non-combustion device, the positive and negative electrodes of the air heater may be directly electrically contacted with the positive and negative electrodes of the host power supply 7 in the heating non-combustion device by means of pressure welding, without providing an additional wire for electrically connecting the positive and negative electrodes of the air heater with the positive and negative electrodes of the host power supply 7, thereby facilitating improvement of convenience of electrical connection between the air heater and the host power supply 7.

Further, referring to fig. 2-3 and fig. 5-6, in some exemplary embodiments of the present utility model, a first mounting groove 11 and a second mounting groove 12 are formed on the outer peripheral wall of the heating body 1 at intervals, the first mounting groove 11 and the second mounting groove 12 are all disposed along the axial direction of the heating body 1 and penetrate through the heating body 1, the first electrode 2 is embedded in the first mounting groove 11 and sintered into a whole with the heating body 1, and the second electrode 3 is embedded in the second mounting groove 12 and sintered into a whole with the heating body 1. The arrangement is beneficial to improving the combination area between the heating body 1 and the first electrode 2 and the second electrode 3, so that the electric connection between the heating body 1 and the first electrode 2 and the second electrode 3 is more reliable.

Further, referring to fig. 2-3 and fig. 5-8, in some exemplary embodiments of the present utility model, the housing 4 includes a cylindrical body 43, a first annular cover 41 and a second annular cover 42, the cylindrical body 43 is disposed around the heating body 1, and an inner peripheral wall of the cylindrical body 43 is disposed opposite to an outer peripheral wall of the heating body 1 at intervals, the first cover 41 is sintered on top of the cylindrical body 43, and the inner peripheral wall of the first cover 41 is sintered with the outer peripheral wall of the upper end of the heating body 1 into a whole, the second cover 42 is sintered on bottom of the cylindrical body 43, and the inner peripheral wall of the second cover 42 is sintered with the outer peripheral wall of the lower end of the heating body 1 into a whole, and the heat insulating layer 5 is filled in a space enclosed by the inner peripheral wall of the cylindrical body 43, the first cover 41, the outer peripheral wall of the heating body 1 and the second cover 42 together.

In the present embodiment, based on the above structural design, on one hand, it is convenient to fill the non-metallic insulation material in powder form such as aerogel between the housing 4 and the heating body 1 to form the insulation layer 5 in the process of manufacturing the air heater, and on the other hand, since the first cover 41 and the second cover 42 can restrict the non-metallic insulation material in powder form between the cylinder 43 and the heating body 1, it is possible to prevent the non-metallic insulation material from leaking to the outside from both ends of the air heater in the process of using or storing and transporting the air heater. In some specific embodiments, the manufacturing process of the air heater of the present embodiment may be as follows:

Firstly, a heating body 1, a first electrode 2 and a second electrode 3 are respectively manufactured by adopting the existing conductive ceramic body manufacturing process, and a cylinder 43, a first cover 41 and a second cover 42 are manufactured by adopting the existing insulating ceramic body manufacturing process for standby;

Then, sintering the heating body 1, the first electrode 2 and the second electrode 3 into a whole by adopting the existing ceramic sintering process to obtain a first combination body;

Next, the first assembly is put into the cylinder 43, and the second cover 42 is fitted into the lower end of the cylinder 43 so that the outer peripheral wall of the second cover 42 is in close contact with the inner peripheral wall of the cylinder 43 and the inner peripheral wall of the second cover 42 is in close contact with the outer peripheral wall of the lower end of the first assembly, to obtain a second assembly;

Then, the second combination is placed in a sintering furnace for sintering, and a third combination formed by integral sintering is obtained;

Subsequently, a non-metallic heat insulating material in powder form is filled between the inner peripheral wall of the cylinder 43 and the outer peripheral wall of the heating body 1 through the upper end of the third assembly, and the first cover 41 is fitted into the upper end of the cylinder 43 so that the outer peripheral wall of the first cover 41 is in close contact with the inner peripheral wall of the cylinder 43 and the inner peripheral wall of the first cover 41 is in close contact with the outer peripheral wall of the upper end of the first assembly, to obtain a fourth assembly;

And finally, placing the fourth combination body into a sintering furnace for sintering to finally obtain the integrated air heater without any metal piece.

Correspondingly, referring to fig. 9, the embodiment of the present utility model further provides a heating non-combustion device, which includes a mounting housing 6, a host power supply 7, and an air heater (as shown in fig. 1-8) in any of the foregoing embodiments, wherein both the host power supply 7 and the air heater are mounted inside the mounting housing 6, an air inlet 61 communicating with the outside is provided on an outer wall of the mounting housing 6, a containing cavity 62 capable of containing herbal products is provided in an upper end of the mounting housing 6, the first electrode 2 and the second electrode 3 are respectively electrically connected with the host power supply 7, and the air inlet 61 is communicated with the containing cavity 62 through a ventilation structure 10.

In this embodiment, in a specific implementation, the host power supply 7 may specifically include a control circuit board 71 and a battery 72, where the control circuit board 71 is electrically connected to the battery 72, the first electrode 2 and the second electrode 3, respectively, the control circuit board 71 is used to control the operation of the heating body 1, after the herbal product is placed in the accommodating cavity 62, the control circuit board 71 can control the battery 72 to supply power to the heating body 1, so that the heating body 1 is electrified to generate heat, when a user performs suction, external air flows into the heating body 1 through the air inlet hole 61 of the mounting housing 6 and is heated by the heating body 1 to form a hot air flow, and the hot air flow finally leads to the accommodating cavity 62 and heats and atomizes the herbal product located in the accommodating cavity 62, thereby generating an aerosol that can be sucked by the user.

In this embodiment, it should be noted that the herbal product may be a low-temperature non-combustible cigarette, or may be a herbal substance (such as tea), which may be determined according to the actual use requirement of the user, and this embodiment is not limited specifically. The low-temperature non-combustible cigarette mainly refers to an aerosol-generating product made of materials such as cut tobacco, tobacco particles, plant fragments, tobacco essence, propylene glycol and the like, and under the condition of low-temperature heating, nicotine and other fragrant substances in the herbal product can volatilize when solid particles are not generated, and only atomized steam is generated. The low temperature non-combustion is actually a low temperature carbonization process, the heating temperature is generally 200-400 ℃, and the low temperature refers to the heating temperature in the range of 200-400 ℃. In addition, it should be noted that, in a specific application scenario, the shape of the herbal product may be fixed (for example, a columnar cigarette) or may be not fixed (for example, loose tobacco shred), which is not limited in this embodiment.

It should be noted that, other contents of the air heater and the heating non-combustion device disclosed in the present utility model can be referred to the prior art, and will not be described herein.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (10)

1. An air heater, characterized in that the air heater is of unitary construction, the air heater comprising:

The heating body is made of conductive ceramic materials, a plurality of ventilation structures through which gas passes are distributed in the heating body, and the heating body is used for heating the gas flowing through the ventilation structures to form hot gas flow;

A first electrode made of a conductive ceramic material, the first electrode being sintered on the heating body;

The second electrode is made of conductive ceramic materials, is sintered on the heating body and is arranged at intervals with the first electrode;

A housing made of an insulating ceramic material, the housing being disposed around the heating body in a circumferential direction of the heating body and sintered integrally with the heating body, and an inner circumferential wall of the housing being disposed at an opposite interval from an outer circumferential wall of the heating body; and

And the heat insulation layer is made of a nonmetallic heat insulation material and is positioned between the inner peripheral wall of the shell and the outer peripheral wall of the heating body.

2. The air heater of claim 1, wherein said venting structure includes pores, and said heating body is made of a porous conductive ceramic material such that said heating body is integrally distributed with a plurality of said pores.

3. The air heater of claim 1, wherein the ventilation structure includes air flow passages, the heating body is made of dense conductive ceramic material, a plurality of air flow passages are distributed in the heating body at intervals, and each air flow passage is provided through the heating body in an axial direction of the heating body.

4. The air heater of claim 1, wherein the ventilation structure includes air flow passages, the heating body is made of a porous conductive ceramic material, a plurality of the air flow passages are distributed in the heating body at intervals, and each of the air flow passages is provided to penetrate the heating body in an axial direction of the heating body.

5. The air heater according to claim 1, wherein said heating body has a columnar shape, one end of said first electrode is integrally sintered with an outer wall of one end of said heating body, one end of said second electrode is integrally sintered with an outer wall of the other end of said heating body, and on an axial section of said heating body, one end of said first electrode and said heating body sintered is disposed diagonally to one end of said second electrode and said heating body sintered;

And/or the number of the groups of groups,

The heating body is made of porous conductive ceramic material, and the porosity of the heating body is 45% -85%.

6. The air heater according to claim 1, wherein the heating body is columnar, the first electrode and the second electrode are columnar, the first electrode is integrally sintered with the outer peripheral wall of the heating body along the axial direction of the heating body, the second electrode is integrally sintered with the outer peripheral wall of the heating body along the axial direction of the heating body, and the first electrode and the second electrode are positioned on the same axial section of the heating body.

7. The air heater of claim 6, wherein the first electrode includes a first pillar portion and a first joint portion sequentially connected in an axial direction of the first electrode, a cross-sectional area of the first joint portion being larger than a cross-sectional area of the first pillar portion in a radial direction of the first electrode, the first pillar portion being sintered integrally with an outer peripheral wall of the heating body in the axial direction of the heating body, the first joint portion being for pressure-bonding with a positive electrode of a host power supply; the second electrode comprises a second column part and a second joint part which are sequentially connected along the axial direction of the second electrode, the cross section area of the second joint part is larger than that of the second column part along the radial direction of the second electrode, the second column part and the peripheral wall of the heating body are sintered into a whole along the axial direction of the heating body, and the second joint part is used for being in pressure connection with the negative electrode of a host power supply;

And/or the number of the groups of groups,

The periphery wall of heating member has seted up first mounting groove and the second mounting groove that the interval set up, first mounting groove with the second mounting groove is all followed the axial of heating member runs through the heating member sets up, first electrode inlay locate in the first mounting groove and with the heating member sintering becomes integrative, the second electrode inlay locate in the second mounting groove and with the heating member sintering becomes integrative.

8. An air heater according to claim 3 or 4, wherein each of said air flow passages is uniformly spaced;

and/or the diameter of each airflow channel is 0.2 mm-0.9 mm;

And/or, the shape and the size of each airflow channel are the same.

9. The air heater of any one of claims 1-7, wherein the insulating layer comprises any one of silica aerogel, alumina aerogel, titania aerogel, silicon carbide aerogel, titanium carbide aerogel, ceramic fibers, quartz fibers;

And/or the number of the groups of groups,

The shell comprises a barrel, a first annular cover body and a second annular cover body, wherein the barrel surrounds the heating body, the inner peripheral wall of the barrel and the outer peripheral wall of the heating body are oppositely arranged at intervals, the first cover body is sintered at the top of the barrel, the inner peripheral wall of the first cover body and the outer peripheral wall of the upper end of the heating body are sintered into a whole, the second cover body is sintered at the bottom of the barrel, the inner peripheral wall of the second cover body and the outer peripheral wall of the lower end of the heating body are sintered into a whole, and the heat insulation layer is filled in the space enclosed by the inner peripheral wall of the barrel, the first cover body, the outer peripheral wall of the heating body and the second cover body together.

10. The utility model provides a heating non-combustion device which characterized in that, includes installation casing, host computer power and the air heater of any one of claims 1-9, the host computer power with the air heater all install in the inside of installation casing, set up on the outer wall of installation casing with the inlet port that external is linked together just be equipped with in the upper end of installation casing and accept the chamber that can accept herbal products, first electrode the second electrode respectively with host computer power electricity is connected, the inlet port is linked together through ventilation structure with accept the chamber.