CN219323179U

CN219323179U - Heat exchanger and electronic atomizing device

Info

Publication number: CN219323179U
Application number: CN202320032963.4U
Authority: CN
Inventors: 彭争战; 刘群利
Original assignee: Shenzhen Innokin Technology Co Ltd
Current assignee: Shenzhen Innokin Technology Co Ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-07-11
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses a heat exchanger and an electronic atomization device, wherein the heat exchanger comprises a heat conductor and a heating body, a plurality of pore structures for air to pass through are arranged in the heat conductor, and the pore structures are provided with an air inlet end and an air outlet end; the heating body is at least one and is arranged in the heat conducting body and is in close contact with the heat conducting body, the heating body is used for heating air flowing into the heat conducting body from the air inlet end, and the heated air flows out from the air outlet end of the heat conducting body. By adopting the technical scheme, the heat transfer efficiency between the heating body and the heat conductor is improved by increasing the contact area between the heating body and the heat conductor, and a plurality of pore structures are arranged in the heat conductor to form a plurality of irregularly-shaped airflow channels, so that the air flow is increased, the air flowing path is prolonged, the heating time is prolonged, and the effects of improving the heat exchange efficiency and reducing the energy consumption are achieved.

Description

Heat exchanger and electronic atomizing device

Technical Field

The utility model relates to the technical field of electronic atomization, in particular to a heat exchanger and an electronic atomization device.

Background

The non-contact electronic atomization device is one of low-temperature non-combustion electronic atomization devices, and a heating unit in the non-contact electronic atomization device does not need to be in direct contact with low-temperature non-combustion tobacco products, but heats the tobacco products in a hot air heating mode so as to generate aerosol for users to inhale. The non-contact electronic atomizing device comprises: the device comprises an atomization main machine, a shell which is provided with a heating cavity for placing tobacco products, and a heat exchanger which is electrically connected with the atomization main machine and is communicated with the heating cavity, wherein the heat exchanger is used for heating air flowing through to form hot air, and the hot air enters the heating cavity to heat the tobacco products to generate aerosol for a user to inhale. Compared with a contact type electronic atomization device, the non-contact type electronic atomization device has the effect of uniform heating through a hot air heating mode.

The time that the air passes through the heat exchanger is the heating time of the air, and the heat exchange efficiency of the heat exchanger is influenced by the length of the heating time of the air, namely the heating temperature is fixed, and the longer the air passes through the heat exchanger, the larger the heat exchange efficiency, and conversely, the shorter the air passes through the heat exchanger, the smaller the heat exchange efficiency. The heat exchanger on the market at present only generally comprises a conductive heating body, an air passage is arranged in the conductive heating body, air enters from the air inlet end of the air passage, and after the air in the air passage is heated by the conductive heating body, the heated air enters into a heating cavity from the air outlet end of the air passage so as to heat tobacco products in the heating cavity. In order to heat the air externally conducted to the heat exchanger to the atomization temperature (200-400 ℃) required by the tobacco products, the heating time of the air needs to be prolonged to increase the heat exchange efficiency of the heat exchanger, or a conductive heating body with higher power is adopted to increase the temperature for heating the air. The air passage is often set to be in a bent shape in order to prolong the heating time of air, however, the bent air passage is inconvenient for a user to suck due to the smaller diameter of the air passage and the smaller ventilation quantity; in addition, the conductive heating body with larger resistance is adopted, so that the energy consumption is increased, and the energy conservation and electricity saving are not facilitated.

Disclosure of Invention

The utility model mainly aims to provide a heat exchanger and an electronic atomization device, and aims to solve the technical problems of how to improve the heat exchange efficiency of the heat exchanger and reduce energy consumption.

In order to achieve the above object, the present utility model provides a heat exchanger and an electronic atomizing device, comprising:

the heat conducting body is internally provided with a plurality of pore structures for air to pass through, and the pore structures are provided with an air inlet end and an air outlet end; and

the heating body is arranged in the heat conducting body and is in close contact with the heat conducting body, the heating body is used for heating air flowing into the heat conducting body from the air inlet end, and the heated air flows out from the air outlet end of the heat conducting body.

In an alternative embodiment, the heating body is in a sheet shape, and a plurality of heating bodies are arranged at intervals.

In an alternative embodiment, a plurality of heating bodies are arranged at intervals along the axial direction of the heat exchanger; or alternatively

The heating bodies are arranged at intervals along the radial direction of the heat exchanger.

In an alternative embodiment, when the heating bodies are disposed at intervals along the axial direction of the heat exchanger, the ratio of the cross-sectional area of the heating bodies to the cross-sectional area of the heat conductor is (0.6 to 0.9): 1.

in an alternative embodiment, the resistance value of each of the heating bodies is the same; or alternatively

The resistance values of the heating bodies sequentially increase from the position close to the air inlet end to the position far away from the air inlet end.

In an alternative embodiment, the heating body is a dense conductive ceramic heating body or a metal heating body;

and/or the heating body is provided with a vent hole for air to pass through.

In an alternative embodiment, when the heating body is a metal heating body, the heating body is the metal heating body formed by winding a heating sheet or a heating wire.

In an alternative embodiment, the thermally conductive body is made of porous insulating ceramic or fiberglass;

and/or the heat conductor and the heating body are co-fired into a whole.

In an alternative embodiment, the heating body is a porous conductive ceramic heating body or a metal felt heating body.

and/or the heat conductor and the heating body are co-fired into a whole.

In an alternative embodiment, the heat exchanger further comprises:

the shell is sleeved outside the heat conducting body, and at least one air inlet and at least one air outlet are respectively formed in the shell corresponding to the air inlet end and the air outlet end; and

and one end of the wire is connected with the heating body, and the other end of the wire sequentially penetrates out of the heat conductor and the shell and is exposed out of the shell.

In order to achieve the above object, the present utility model further provides an electronic atomization device, including a heat exchanger in any of the above embodiments; and

and the atomizing host is electrically connected with the heating bodies in the heat exchanger, and when the number of the heating bodies is multiple, the atomizing host carries out sub-control heating on each heating body.

Compared with the prior art, the utility model has the beneficial effects that: in the technical scheme of the application, the heat exchanger comprises a heat conductor and a heating body. Wherein, be equipped with a plurality of pore structures that supply the air to pass through in the heat conduction body, pore structure has inlet end and end of giving vent to anger. The heating body is at least one and is arranged in the heat conducting body and is in close contact with the heat conducting body, the heating body is used for heating air flowing into the heat conducting body from the air inlet end, and the heated air flows out from the air outlet end of the heat conducting body. When the heat exchange is carried out, the heat generated by the heating body electrified is transferred to the heat conductor, so that the heat conductor is heated, and when the air is introduced into the air inlet end, the heat conductor and the heating body can both heat the air, so that the air is heated to the required atomization temperature.

This application locate the heating member in the heat conductor and with heat conductor in close contact, increased the area of contact of heating member and heat conductor for the heat that the heating member circular telegram produced can transmit the heat conductor fast, with the intensification of accelerating the heat conductor, and can give the heat conductor with more heat transfer, thereby improved heat transfer's efficiency, and then improved heat exchanger's heat exchange efficiency.

In addition, this application is through being equipped with a plurality of pore structures that supply the air to pass through in the heat conduction body to form many channels that supply the air to flow, the effect lies in: firstly, the air flow is increased, and meanwhile, the contact area of the heat conductor and the air is increased, so that the heat exchanger is convenient for a user to suck and can rapidly heat a large amount of air, and the heat exchange efficiency of the heat exchanger is improved; secondly, the air path is prolonged to prolong the heating time of the air in the heat exchanger, and the air flowing path in the heat conducting body is irregular and not linear, so that the air heating time can be prolonged, the air can be fully heated in the heat exchanger to reach the required atomization temperature, and the heat exchange efficiency of the heat exchanger is further improved. In addition, if the air introduced into the heat exchanger is to be heated to the desired atomization temperature, less heat is required to be generated by the heat exchanger with higher heat exchange efficiency than by the heat exchanger with lower heat exchange efficiency. Therefore, when the heat exchange rate of the heat exchanger is relatively high, the heating body in the heat exchanger can be set to be a heating body with smaller power, so that the energy consumption of the heat exchanger can be reduced, and the energy and electricity saving are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the 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, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a sectional view showing a structure of a heat exchanger in embodiment 1 of the present utility model;

FIG. 2 is a schematic diagram of the heating body in FIG. 1;

FIG. 3 is a cross-sectional view showing another construction of the heat exchanger according to embodiment 1 of the present utility model;

FIG. 4 is a schematic diagram of a structure of the heating body in FIG. 3;

fig. 5 is a schematic structural diagram of a metal heating body in embodiment 1 of the present utility model;

fig. 6 is a schematic structural diagram of a dense conductive ceramic heating body in embodiment 1 of the present utility model;

FIG. 7 is a sectional view showing the structure of a heat exchanger in embodiment 2 of the present utility model;

FIG. 8 is a sectional view showing the structure of a heat exchanger in embodiment 3 of the present utility model;

fig. 9 is a sectional view showing the structure of an electronic atomizing device in embodiment 4 of the present utility model.

Reference numerals illustrate:

1. a heat conductor; 11. an air inlet end; 12. an air outlet end; 2. a heating body; 21. a vent hole; 3. a housing; 31. an air inlet; 32. an air outlet; 4. a wire;

100. a heat exchanger;

200. an atomizing host;

300. tobacco products.

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, 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.

Example 1

Referring to fig. 1 and 3, an embodiment of the present utility model provides a heat exchanger, which includes a heat conductor 1 and a heating body 2.

Wherein, a plurality of pore structures for air to pass through are arranged in the heat conductor 1, and the pore structures are provided with an air inlet end 11 and an air outlet end 12. The heating body 2 is at least one, and the heating body 2 is arranged in the heat conductor 1 and is in close contact with the heat conductor 1, and the heating body 2 is used for heating air flowing into the heat conductor 1 from the air inlet end 11, and the heated air flows out from the air outlet end 12 of the heat conductor 1.

In this embodiment, the heat exchanger is applied to an electronic atomization device that does not burn at low temperature, and is used for heating and atomizing a tobacco product 300 (as shown in fig. 9) that does not burn at low temperature; of course, other types of aerosol-generating articles, such as tobacco leaves, cut tobacco, etc., may be used, and may be specifically determined according to the actual use requirements of the user, which is not specifically limited in this embodiment. The low-temperature non-combustible tobacco product 300 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 has a generally cylindrical shape (e.g., a columnar shape), so that the tobacco product is also called a low-temperature non-combustible tobacco, and under the condition of low-temperature heating, volatile substances such as nicotine and other aromatic substances in the tobacco product can volatilize without generating solid particles, and only atomized steam is generated. It is understood that low temperature herein refers to a temperature that enables the smoking article 300 to produce an aerosol without combustion, typically 200-400 ℃.

When the heat exchanger exchanges heat, heat generated by electrifying the heating body 2 is transferred to the heat conductor 1 closely contacted with the heating body 2, so that the heat conductor 1 is heated, the heat conductor 1 can heat air introduced from the air inlet end 11, and therefore, air flowing out from the air outlet end 12 is heated to an atomization temperature required by the tobacco product 300. In addition, since the heating body 2 is disposed in the heat conductor 1, that is, when the air introduced from the air inlet end 11 flows through the heating body 2 (in this case, the heating body 2 is of a porous structure or the ventilation hole 21 is disposed on the heating body 2), the heating body 2 can directly heat the air flowing through the heating body 2, and the heated air is continuously heated in the pore structure of the heat conductor 1 after being conducted from the heating body 2, thereby improving the heat exchange efficiency of the heat exchanger.

In the above, the close contact between the heating body 2 and the heat conductor 1 means that after the heating body 2 is disposed in the heat conductor 1, each outer surface of the heating body 2 is closely attached to the heat conductor 1, in other words, no gap exists between each outer surface of the heating body 2 and the heat conductor 1, so that the contact area between the heating body 2 and the heat conductor 1 reaches the maximum, that is, the sum of the areas of each outer surface of the heating body 2.

According to the technical scheme, the heating body 2 is arranged in the heat conductor 1 and is in close contact with the heat conductor 1, so that the contact area between the heating body 2 and the heat conductor 1 is increased, heat generated by electrifying the heating body 2 can be rapidly transferred to the heat conductor 1 through each outer surface of the heating body 2, the temperature rise of the heat conductor 1 is accelerated, more heat can be transferred to the heat conductor 1, the heat transfer efficiency is improved, and the heat exchange efficiency of the heat exchanger is improved.

In addition, the above technical solution is further provided with a plurality of pore structures for air to pass through in the heat conductor 1, so as to form a plurality of channels for air to flow, and the effect is that: firstly, the air flow is increased, and meanwhile, the contact area of the heat conductor 1 and the air is increased, so that the heat exchanger is convenient for a user to suck and can rapidly heat a large amount of air, and the heat exchange efficiency of the heat exchanger is improved; secondly, the air path is prolonged to prolong the heating time of the air in the heat exchanger, and the air flowing path in the heat conductor 1 is irregular and not linear, so that the air heating time can be increased, the air is fully heated in the heat exchanger to reach the required atomization temperature, and the heat exchange efficiency of the heat exchanger is further improved. If the air introduced into the pore structure of the heat conductor 1 is heated to the atomization temperature required by the tobacco product 300, the heating body 2 in the heat exchanger with low heat exchange rate needs to generate more heat to enable the heat conducted to the heat conductor 1 to reach the degree of heating the air to the atomization temperature required by the tobacco product 300, while the heat exchanger with high heat exchange rate needs to generate less heat than the heat exchanger with low heat exchange efficiency to enable the heat conducted to the heat conductor 1 to reach the degree of heating the air to the atomization temperature required by the tobacco product 300. Therefore, when the heat exchange rate of the heat exchanger is relatively high, the heating body 2 in the heat exchanger can be set into a heating body with smaller power, so that the energy consumption of the heat exchanger can be reduced, and the energy and electricity saving are facilitated.

Further, as shown in fig. 1 and 2, the heating body 2 is in a sheet shape, the heating body 2 is multiple, and the heating bodies 2 are arranged in the heat conductor 1 at intervals so as to heat the heat conductor 1 in multiple areas, so that the uniformity of heating the heating body 2 on the heat conductor 1 and the heat conduction efficiency between the heating body 2 and the heat conductor 1 can be improved, the overall heating speed of the heat conductor 1 is accelerated, after the heat conductor 1 conducts heat to air flowing through, the heating body 2 can rapidly supply heat to the heat conductor 1, the heat conductor 1 can continuously heat the air flowing through later, and the heat exchange efficiency of the heat exchanger is further improved.

Of course, in other structural designs of the present application, the heating body 2 may also be in a block-shaped or spiral-shaped structural form, and may be specifically configured according to actual production requirements or the shape of the heat conductor 1, which is not specifically limited in the present application.

The plurality of heating bodies 2 are disposed in the heat conductor 1 in various manners, and in this embodiment, as shown in fig. 1, the plurality of heating bodies 2 are all perpendicular to the central axis of the heat exchanger and are disposed at intervals along the axial direction of the heat exchanger. Preferably, the intervals between the plurality of heating bodies 2 are equal.

Further, the ratio of the cross-sectional area of the heating body 2 to the cross-sectional area of the heat conductor 1 is (0.6 to 0.9): 1, the larger the ratio of the two is, the larger the contact area between the heating body 2 and the heat conductor 1 is, so that the heating range of the heating body 2 to the heat conductor 1 is larger, and the higher the heat transfer efficiency in the heat exchanger is. Therefore, preferably, the ratio of the cross-sectional area of the heating body 2 to the cross-sectional area of the heat conductor 1 is 0.9:1.

further, when the heat exchanger performs heat exchange, the heat generated by the heating body 2 is transferred to the heat conductor 1 step by step, that is, the temperature of the area of the heat conductor 1 close to the surface of the heating body 2 is high, and the temperature of the area of the heat conductor 1 far away from the surface of the heating body 2 is low, so that a temperature gradient exists in the heat exchanger. In order to avoid the phenomenon that the air introduced into the heat conductor 1 enters a lower temperature area from a higher temperature area to generate heat dissipation and temperature reduction, so that the air is continuously heated in the process of passing through the heat exchanger, the temperature of the air reaches the temperature required by atomization when the air flows out of the heat exchanger, the resistance values of the heating bodies 2 are the same, namely the heating power of each heating body 2 is the same, and the heat transferred to the heat conductor 1 by heat conduction of each heating body 2 is the same, so that the phenomenon of preventing the air introduced into the heat exchanger from generating heat dissipation and temperature reduction is achieved.

When the resistance values of the heating bodies 2 are the same, and the same current is introduced, the heat generated by the heating bodies 2 is the same, and the heating bodies 2 are arranged in the heat conductor 1 at intervals and uniformly heat the heat conductor 1, so that the temperature difference in each part in the heat exchanger can be effectively reduced, the temperature in the heat exchanger is enabled to be equal everywhere, the air is continuously heated in the process of passing through the heat exchanger, and the temperature of the air is ensured to reach the temperature required by atomization when the air flows out of the heat exchanger.

In other examples, the resistance values of the plurality of heating bodies 2 sequentially increase from the intake end 11 near the heat conductor 1 to the intake end 11 far from the heat conductor 1. So set up, the heat that each heating member 2 transferred to heat conductor 1 increases in proper order from the inlet end 11 of heat conductor 1 to the outlet end 12 of heat conductor 1, namely, the heating power of heating member 2 near inlet end 11 of heat conductor 1 is minimum, the heating power of heating member 2 near outlet end 12 of heat conductor 1 is maximum, at this moment, the heating member 2 near inlet end 11 of heat conductor 1 can preheat the air that inlet end 11 lets in, then heat the air after preheating through other heating members 2, thereby make the air rise temperature faster, can reach the required temperature of atomizing more soon, improve heat exchange efficiency of heat exchanger.

When the resistance values of the plurality of heating bodies 2 from the air inlet end 11 close to the heat conductor 1 to the air inlet end 11 far from the heat conductor 1 are sequentially increased, the same current is supplied, the heat generated by the plurality of heating bodies 2 is increased along the air flow direction (the direction indicated by the arrow is the air flow direction as shown in fig. 1), and then the temperature of the heat conductor 1 is also increased along the air flow direction, so that the air continuously flows from the low-temperature area to the high-temperature area in the process of passing through the heat exchanger, and the air is continuously heated, so that the temperature of the air reaches the temperature required by atomization when the air flows out of the heat exchanger.

Alternatively, as shown in fig. 2 to 6, the heating body 2 is a dense conductive ceramic heating body, a metal heating body, a porous conductive ceramic heating body or a metal felt heating body. In this embodiment, the heating body 2 may be made of a heat sensitive material, such as: stainless steel, pure titanium, pure nickel or conductive ceramics doped with heat sensitive materials (dense conductive ceramics or porous conductive ceramics) and the like, and the temperature of the heating body 2 can be controlled by monitoring the temperature of the heating body 2, so that the phenomenon that the taste of smoke is affected due to scorching caused by overhigh temperature of the heating body 2 or insufficient atomization caused by overhigh temperature of the heating body 2 is reduced.

When the heat-sensitive material is not used for the heating body 2, the temperature may be monitored by providing a temperature sensor in the heat exchanger to reduce the risk of occurrence of scorching smell or insufficient atomization, which is not limited thereto.

When the heating body 2 is a dense conductive ceramic heating body (as in fig. 6) or a metal heating body (as in fig. 4 and 5), the heating body 2 is provided with a vent hole 21 for air to pass through. Of course, in order to avoid that the metallic smell generated when the heating body heats affects the atomized taste, the heating body 2 is preferably a dense conductive ceramic heating body.

The material of the dense conductive ceramic heating body may be a mixture of at least one of silicon carbide, silicon oxide, aluminum oxide, and zirconium oxide and the conductive powder, and the material of the conductive powder may be at least one of titanium nitride, zirconium nitride, titanium carbonitride, titanium carbide, zirconium carbide, thallium carbide, hafnium carbide, titanium boride, zirconium boride, thallium boride, hafnium boride, molybdenum silicide, and tungsten carbide.

In this embodiment, as shown in fig. 1 and 2, in order to enhance the air permeability of the heat conductor and to avoid the influence of the metal smell generated when the metal heating body heats on the atomized taste, the heating body 2 is a porous conductive ceramic heating body. In this case, the heating body 2 may be provided with the vent hole 21 through which air passes, or the vent hole 21 may not be provided.

The porous conductive ceramic heating body of the embodiment is a conductive ceramic material which is sintered at high temperature and has a plurality of pore structures which are communicated with each other and also communicated with the surface of the material, and in the specific implementation, the material of the porous conductive ceramic heating body is a mixture of conductive powder and at least one of silicon carbide, silicon oxide, aluminum oxide and zirconium oxide, and the material of the conductive powder can be at least one of titanium nitride, zirconium nitride, titanium carbonitride, titanium carbide, zirconium carbide, thallium carbide, hafnium carbide, titanium boride, zirconium boride, thallium boride, hafnium boride, molybdenum silicide and tungsten carbide. The difference between the porous conductive ceramic heating body and the compact conductive ceramic heating body is that the porous conductive ceramic heating body is internally provided with a through pore structure, and the compact conductive ceramic heating body is internally provided with a solid structure, and besides, other materials of the porous conductive ceramic heating body and the compact conductive ceramic heating body can be the same materials, such as: zirconium nitride, alumina materials and the like are adopted; alternatively, other materials of the two may be different materials, such as: the porous conductive ceramic heating body is made of zirconium nitride and aluminum oxide materials, and the dense conductive ceramic heating body is made of zirconium nitride and silicon oxide materials, etc., and the porous conductive ceramic heating body is not limited thereto.

In other embodiments, as shown in fig. 3-5, when the heating body 2 is a metal heating body, the heating body 2 is a metal heating body formed by winding a heating sheet or a heating wire, so that the area of the metal heating body can be increased, the metal heating body is in close contact with the heat conductor 1, that is, the contact area between the metal heating body and the heat conductor 1 is also increased, and the heat on the metal heating body can be transferred to the heat conductor 1 in a heat conduction manner, that is, the heat conductor 1 has enough heat to fully heat the air in the heat conductor 1, so that the heat exchange efficiency of the heat exchanger is improved.

Optionally, the heat conductor 1 is made of porous insulating ceramic or glass fiber and other materials with insulation, high temperature resistance and porosity. In this embodiment, the heat conductor 1 is preferably a porous insulating ceramic, and the material of the porous insulating ceramic is one of silicon carbide, silicon oxide, aluminum oxide, and zirconium oxide.

More preferably, the heat conductor 1 is preferably an alumina porous ceramic material, and its heat conducting property is better than that of several porous ceramic materials, so that the heat exchange efficiency of the heat exchanger can be further improved.

Preferably, the heat conductor 1 is co-fired with the heating body 2. Taking the heat conductor 1 as porous insulating ceramic, and the heating body 2 as porous conductive ceramic as an example, the heat conductor 1 and the heating body 2 can be connected into a whole through three times of sintering, for example: the method comprises the steps of firstly, independently sintering and forming the heat conductor 1, then independently sintering and forming the heating body 2, and finally, co-sintering the sintered and formed heat conductor 1 and the heating body 2; alternatively, the heat conductor 1 and the heating body 2 may be integrally connected by two times of sintering, for example: the heating body 2 is sintered and molded independently, and then the heating body 2 is pre-buried in a sintering die of the heat conductor 1, so that the heating body 2 and the heat conductor 1 are sintered together.

Further, as shown in fig. 1, the heat exchanger further includes: a housing 3 and a wire 4.

Wherein, the shell 3 is sleeved outside the heat conductor 1, and at least one air inlet 31 and at least one air outlet 32 are respectively arranged on the shell 3 corresponding to the air inlet end 11 and the air outlet end 12. And one end of the wire 4 is connected with the heating body 2, and the other end of the wire 4 sequentially penetrates out of the heat conductor 1 and the shell 3 and is exposed out of the shell 3. When the heat exchanger is matched with the electronic atomization device for use, the other end of the lead 4 is connected with a host power supply in the electronic atomization device, and a current path is formed among the host power supply in the electronic atomization device, the lead 4 and the heating body 2, so that power can be supplied to the heating body 2 through the host power supply.

Preferably, the housing 3 is made of an insulating material, which serves to reduce heat loss in the heat exchanger, so that the heat in the heat conductor 1 is preserved for a longer time, thereby allowing longer heating of the air in the heat conductor 1. In addition, when the heat exchanger is matched with the electronic atomization device for use, because the heat exchanger is arranged in the electronic atomization device, the shell 3 made of the heat insulation material is arranged at the moment, so that heat of the heat conductor 1 can be prevented from being directly transferred to the shell of the electronic atomization device, the temperature of the shell of the electronic atomization device is increased, and the bad experience of scalding hands is caused.

In this embodiment, the heat insulating material may be a glaze, a heat insulating ceramic material, or the like, and is not limited thereto.

Example 2

The main difference between this embodiment and embodiment 1 is that in this embodiment, as shown in fig. 7, the plurality of heating bodies 2 are each parallel to the central axis of the heat exchanger and are arranged at intervals in the radial direction of the heat exchanger.

Further, the ratio of the cross-sectional area of the heating body 2 to the longitudinal cross-sectional area of the heat conductor 1 is (0.6 to 1): 1, since the larger the ratio of the two is, the larger the heating range of the heat body 2 to the heat conductor 1 is, the higher the transfer efficiency of heat in the heat exchanger is, it is preferable that the ratio of the cross-sectional area of the heat body 2 to the longitudinal cross-sectional area of the heat conductor 1 is 1:1. the cross-sectional area of the heating body 2 is the area of the largest cross-section of the heating body 2 in the axial direction of the heat exchanger, and the longitudinal cross-sectional area of the heat conductor 1 is the area of the cross-section of the heat conductor 1 in the axial direction of the heat exchanger. Optionally, the heating body 2 is a dense conductive ceramic heating body, a metal heating body, a porous conductive ceramic heating body or a metal felt heating body. When the heating body 2 is a dense conductive ceramic heating body or a metal heating body, the heating body 2 may not be provided with a vent hole 21 for air to pass through, and air may pass through the heat conductor 1 between the two heating bodies 2 and the heat conductor 1 between the heat conductor 1 and the housing 3.

The material of the heating body 2 is the same as or similar to that of the heating body 2 in embodiment 1, and detailed description thereof is omitted herein.

Example 3

The main difference between this embodiment and embodiment 1 is that in this embodiment, as shown in fig. 8, a plurality of heating bodies 2 are disposed in a slant manner in the heat conductor 1.

Optionally, the heating body 2 is a dense conductive ceramic heating body, a metal heating body, a porous conductive ceramic heating body or a metal felt heating body. When the heating body 2 is a compact conductive ceramic heating body or a metal heating body, the heating body 2 is provided with a vent hole 21 for air to pass through.

Example 4

The embodiment of the utility model further provides an electronic atomization device, as shown in fig. 9, including the heat exchanger 100 and the atomization host 200 in any of the above embodiments. Wherein, the atomizing host 200 is electrically connected with the heating bodies 2 in the heat exchanger 100, when the heating bodies 2 are plural, the atomizing host 200 performs the sub-control heating to each heating body 2, so that the simultaneous operation, the independent operation or the intermittent operation of each heating body 2 can be realized, and how to perform the sub-control can be specifically set according to the actual requirements, which is not limited herein. The heating power in the individual heating bodies 2 can also be set differently, so that the individual heating bodies 2 are adapted to the various practical situations of the electronic atomizing device.

It should be noted that, other contents of the electronic atomization 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 description and drawings or as applied directly or indirectly to other related art.

Claims

1. A heat exchanger, comprising:

the heat conducting body (1), a plurality of pore structures for air to pass through are arranged in the heat conducting body (1), and the pore structures are provided with an air inlet end (11) and an air outlet end (12); and

the heating body (2) is at least one, is arranged in the heat conductor (1) and is in close contact with the heat conductor (1), the heating body (2) is used for heating air flowing into the heat conductor (1) from the air inlet end (11), and the heated air flows out from the air outlet end (12) of the heat conductor (1).

2. Heat exchanger according to claim 1, wherein the heating body (2) is in the form of a sheet and a plurality of heating bodies (2) are arranged at intervals.

3. Heat exchanger according to claim 2, wherein a plurality of said heating bodies (2) are arranged at intervals along the axial direction of the heat exchanger; or alternatively

The heating bodies (2) are arranged at intervals along the radial direction of the heat exchanger.

4. A heat exchanger according to claim 3, wherein the ratio of the cross-sectional area of the heating body (2) to the cross-sectional area of the heat conductor (1) is 0.6 to 0.9 when the heating bodies (2) are arranged at intervals in the axial direction of the heat exchanger.

5. Heat exchanger according to claim 4, characterized in that the resistance value of each heating body (2) is identical; or alternatively

The resistance values of the heating bodies (2) from the position close to the air inlet end (11) to the position far away from the air inlet end (11) are sequentially increased.

6. Heat exchanger according to any one of claims 1-5, characterized in that the heating body (2) is a dense conductive ceramic heating body or a metallic heating body;

and/or the heating body (2) is provided with a vent hole (21) for air to pass through.

7. Heat exchanger according to claim 6, characterized in that, when the heating body (2) is a metal heating body, the heating body (2) is the metal heating body which is sinuously wound with a heat generating fin or a heat generating wire.

8. A heat exchanger according to claim 7, characterized in that the material of the heat conductor (1) is porous insulating ceramic or glass fibre;

and/or the heat conductor (1) and the heating body (2) are co-fired into a whole.

9. Heat exchanger according to any one of claims 1-5, characterized in that the heating body (2) is a porous conductive ceramic heating body or a metal felt heating body.

10. A heat exchanger according to claim 9, characterized in that the material of the heat conductor (1) is porous insulating ceramic or glass fibre;

11. The heat exchanger of any one of claims 1-5, wherein the heat exchanger further comprises:

the shell (3) is sleeved outside the heat conductor (1), and at least one air inlet (31) and at least one air outlet (32) are respectively formed in the shell (3) corresponding to the air inlet end (11) and the air outlet end (12); and

and one end of the wire (4) is connected with the heating body (2), and the other end of the wire (4) sequentially penetrates out of the heat conductor (1) and the shell (3) and is exposed out of the shell (3).

12. An electronic atomizing device comprising a heat exchanger according to any one of claims 1-11; and

and the atomizing host machine (200) is electrically connected with the heating bodies (2) in the heat exchanger, and when a plurality of heating bodies (2) are arranged, the atomizing host machine (200) carries out sub-control heating on each heating body (2).