Heat storage body and electronic smoking device

Abstract

The present application provides a heat storage body and an electronic smoking device for an electronic smoking device, wherein the heat storage body includes an air inlet side and an air outlet side. A plurality of air flow channels are arranged in the heat storage body, and the plurality of air flow channels are used to change the air flow flowing through the heat storage body into a turbulent state. The air flow channel extends from the air inlet side to the air outlet side. The plurality of air flow channels are interconnected, and the air flow channel includes a plurality of interconnected hole structures. In the embodiment of the present application, the air flow channel in the heat storage body is arranged, the plurality of air flow channels are interconnected, and the air flow channel includes an interconnected hole structure, so that the air flow passing through the heat storage body becomes a disordered turbulent state, the laminar boundary layer is destroyed, and the air flow can fully contact the inner surface of the air flow channel of the heat storage body to complete the convective heat exchange process. The laminar boundary layer of the air flow in the turbulent state is weakened, and the convective heat transfer coefficient between the heat storage body and the air flow is improved, thereby improving the convective heat exchange capacity, and the heat energy conversion can be completed quickly and efficiently.

Description

Technical Field

[0001] The present application belongs to the field of electronic cigarettes, and specifically relates to a heat storage body used in electronic cigarettes. Background Art

[0002] Generally speaking, electronic cigarette devices all have a heat storage structure, which is used to heat the cold air in the air flow channel to hot air that can be used to bake cigarettes. In the prior art, the air flow channel inside the heat storage body is mostly designed as a straight structure along the air suction direction. The structural design of this air flow channel makes the air flow in a laminar state when passing through the heat storage body. When the air flow flows in a laminar state, a laminar boundary layer is formed on the surface of the channel. Since the air flow velocity in the laminar boundary layer is relatively slow, the convective heat transfer capacity of the air flow will decrease. In addition to the laminar state, the flow state of the air flow also includes a turbulent (also called turbulent) state. The convective heat transfer capacity of the fluid in the turbulent state is greater than the convective heat transfer capacity of the fluid in the laminar state.

[0003] That is to say, due to the structural design of the airflow channel of the existing electronic cigarette heat storage body, the airflow convection heat transfer capacity through the airflow channel is not maximized, and thus the rapid and efficient heat energy conversion capacity of the heat storage body is not fully utilized.

[0004] Therefore, it is necessary to improve the structure of the airflow channel so that the airflow is in a turbulent state when passing through the heat storage body, thereby improving the convective heat exchange capacity of the airflow and improving the thermal energy conversion capacity of the heat storage body. Summary of the invention

[0005] The purpose of the present application is to provide a heat storage body and an electronic smoking device to solve the technical problem of improving the convective heat exchange capacity between the heat storage body and the airflow, thereby improving the heat energy conversion capacity of the heat storage body to the airflow.

[0006] In order to solve the above technical problems, the present application provides a heat storage body for electronic smoking devices.

[0007] The heat storage body includes an air inlet side and an air outlet side. A plurality of air flow channels are provided in the heat storage body, and the plurality of air flow channels are used to change the air flow passing through the heat storage body into a turbulent state. The air flow channel extends from the air inlet side to the air outlet side. The plurality of air flow channels are interconnected, and the air flow channel includes a plurality of hole structures that are interconnected.

[0008] In the embodiment of the present application, two adjacent air flow channels are connected to each other through at least one hole structure.

[0009] In the embodiment of the present application, the outlet side includes a middle area and a peripheral area surrounding the middle area. In the top view of the outlet side, the density of the hole structure in the middle area is less than the density of the hole structure in the peripheral area.

[0010] In the embodiment of the present application, in the top view of the air outlet side, the density of the hole structure increases gradually from the middle area to the peripheral area.

[0011] In an embodiment of the present application, the hole structure includes a first hole and a second hole, and the aperture of the first hole is larger than the aperture of the second hole.

[0012] In the top view of the air outlet side, a plurality of the second holes are arranged around a first hole. The air outlet direction of the first hole intersects with the air outlet direction of the second hole.

[0013] In the embodiment of the present application, the plurality of hole structures include at least one of spherical holes, ellipsoidal holes and cylindrical holes.

[0014] In the embodiment of the present application, the pore size of the pore structure is greater than 100 microns.

[0015] In the embodiment of the present application, the space of the plurality of hole structures occupies 50% of the volume of the heat storage body.

[0016] In an embodiment of the present application, the material of the heat storage body includes at least one of ceramic and foam aluminum.

[0017] The present application also provides an electronic smoking device, comprising the above-mentioned heat storage body.

[0018] The present application provides a heat storage body and an electronic smoking device for an electronic smoking device, wherein the heat storage body includes an air inlet side and an air outlet side. A plurality of air flow channels are arranged in the heat storage body, and the plurality of air flow channels are used to change the air flow flowing through the heat storage body into a turbulent state. The air flow channel extends from the air inlet side to the air outlet side. The plurality of air flow channels are interconnected, and the air flow channel includes a plurality of interconnected hole structures. In the embodiment of the present application, the air flow channel in the heat storage body is arranged, the plurality of air flow channels are interconnected, and the air flow channel includes an interconnected hole structure, so that the air flow passing through the heat storage body becomes a disordered turbulent state, the laminar boundary layer is destroyed, and the air flow can fully contact the inner surface of the air flow channel of the heat storage body to complete the convective heat exchange process. The laminar boundary layer of the air flow in the turbulent state is weakened, and the convective heat transfer coefficient between the heat storage body and the air flow is improved, thereby improving the convective heat exchange capacity, and the heat energy conversion can be completed quickly and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 is a schematic diagram of the structure of the air flow channel in the heat storage body provided in the embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of a top view of an outlet side of a heat storage body provided in an embodiment of the present application;

[0022] Figure 3 It is another schematic diagram of a top view of the gas outlet side of the heat storage body provided in an embodiment of the present application;

[0023] Figure 4 It is a schematic diagram of a three-dimensional structure of a heat storage body provided in an embodiment of the present application;

[0024] Figure 5 It is another schematic diagram of the three-dimensional structure of the heat storage body provided in an embodiment of the present application.

[0025] Illustrations: 10 - heat storage body; S - air outlet side; R - air inlet side; 11 - air flow channel; Q1 - middle area; Q2 - peripheral area; K - hole structure; K1 - first hole; K2 - second hole; K3 - third hole; K4 - fourth hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] It should be noted that in the description of the present application, it should be understood that the orientations or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, “inside”, “outside”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] See also Figure 1 The embodiment of the present application provides a heat storage body 10 for an electronic cigarette device. The heat storage body 10 includes an air inlet side R and an air outlet side S. A plurality of air flow channels 11 are arranged in the heat storage body 10, and the plurality of air flow channels 11 are used to change the air flow passing through the heat storage body 10 into a turbulent state. The air flow channel 11 extends from the air inlet side R to the air outlet side S. The plurality of air flow channels 11 are interconnected, and the air flow channel 11 includes a plurality of hole structures K that are interconnected.

[0029] The embodiment of the present application sets the airflow channel 11 in the heat storage body 10, and the multiple airflow channels 11 are interconnected, and the airflow channels 11 include interconnected hole structures K, so that the airflow flowing through the heat storage body 10 becomes a chaotic turbulent state, the laminar boundary layer is destroyed, and the airflow can fully contact the inner surface of the airflow channel 11 of the heat storage body 10 to complete the convective heat exchange process. The laminar boundary layer of the airflow in the turbulent state is weakened, and the convective heat exchange coefficient between the heat storage body 10 and the airflow is improved, thereby improving the convective heat exchange capacity, and the heat energy conversion can be completed quickly and efficiently.

[0030] Specifically, according to the convective heat transfer formula: Q = h*A (Tw-Tf) (Q is the convective heat transfer heat, h is the convective heat transfer coefficient, A is the effective convective heat transfer area, Tw is the temperature of the solid surface, and Tf is the temperature of the cooling fluid), to increase the convective heat transfer heat Q, the convective heat transfer coefficient h can be increased. The heat storage body 10 provided in the embodiment of the present application increases the convective heat transfer coefficient by changing the airflow into a turbulent state.

[0031] It can be understood that, since the convection heat transfer capacity of the fluid in the turbulent state is greater than that of the fluid in the laminar state, when the heat storage body 10 has the same size and the same temperature, the heat storage body 10 that changes the airflow into a turbulent state can heat the air to a higher temperature, thereby baking the cigarette more fully.

[0032] It is also understandable that when the temperature of the air to be heated is a constant value, the size of the heat storage body 10 that turns the airflow into turbulent flow can be made smaller. Alternatively, the air can be heated to the required temperature only by turning the heat storage body 10 that turns the airflow into turbulent flow to a lower temperature. This can reduce the heating power and battery power consumption.

[0033] When the heat storage body 10 has the same external dimensions and is made of the same material, the heat storage body 10 that converts the airflow into turbulent flow has a smaller mass, so the time required to heat the heat storage body 10 to the set temperature is shorter, that is, the heat storage body 10 heats up more quickly.

[0034] It can be understood that the cavity of the hole structure K is not smooth and regular. Since the wall of the airflow channel 11 is not smooth, the airflow passing through the airflow channel 11 including the interconnected hole structure K is disturbed by the wall and is more likely to turn into a turbulent state.

[0035] Optionally, two adjacent air flow channels 11 are connected to each other via at least one hole structure K.

[0036] It can be understood that two adjacent airflow channels 11 are interconnected through the hole structure K, and the airflow in one airflow channel 11 enters the adjacent airflow channel 11 through the hole structure K. On the one hand, the airflow enters the adjacent airflow channel 11 through the uneven hole structure K, and the airflow is disturbed and turbulent due to the impact and obstruction of the wall of the hole structure K. On the other hand, the airflow in the original airflow channel 11 is mixed with the airflow in the adjacent airflow channel 11, and the two airflows are impacted and mixed to form turbulence.

[0037] See also Figure 2 In the embodiment of the present application, the outlet side S includes a middle area Q1 and a peripheral area Q2 surrounding the middle area Q1. In the top view of the outlet side S, the density of the hole structure K in the middle area Q1 is less than the density of the hole structure K in the peripheral area Q2.

[0038] Usually, at the air outlet side S of the heat storage body 10, the air flow flows out of the heat storage body 10 and becomes hot air. The hot air contacts the cigarettes in the receiving chamber and heats the cigarettes. When the hot air flows in the receiving chamber, the air temperature around the cavity wall is lower than the air temperature in the middle of the receiving chamber because the cavity wall dissipates heat outward. In the present application, the density of the hole structure K in the middle area Q1 of the air outlet side S is smaller than the density of the hole structure K in the peripheral area Q2, so that the temperature of the air flow flowing out of the middle part of the heat storage body 10 is lower than the temperature of the air flow in the peripheral part. Then, when the outflowing airflow heats the cigarettes, due to the heat dissipation of the receiving chamber wall, the temperature difference between the air flow in the middle part and the peripheral part is smaller, and the heating temperature of the entire cigarette by the airflow is more uniform.

[0039] Optionally, in the top view of the air outlet side S, the density of the hole structure K increases from the middle area Q1 to the peripheral area Q2.

[0040] It is easy to understand that the density of the hole structure K increases from the middle area Q1 to the peripheral area Q2. On the air outlet side S, the temperature of the outgoing airflow gradually increases from the middle area Q1 to the peripheral area Q2, that is, the airflow temperature changes more evenly. It is also understandable that after the airflow flows out of the heat storage body 10, the heat dissipation of the airflow by the cavity wall is also gradually carried out from the periphery of the cavity wall to the center of the cavity wall. The temperature of the airflow flowing out of the heat storage body 10 changes evenly and gradually. The temperature of the airflow that heats the cigarette in the cavity is more uniform, thereby achieving uniform heating of the cigarette.

[0041] See also Figure 3 Optionally, the hole structure K includes a first hole K1 and a second hole K2, and the aperture of the first hole K1 is larger than the aperture of the second hole K2. In the top view of the air outlet side S, a plurality of second holes K2 are arranged around a first hole K1. The air outlet direction of the first hole K1 intersects with the air outlet direction of the second hole K2.

[0042] It can be understood that the same volume of airflow flows out of the first hole K1 with a larger aperture at a lower velocity than that of the second hole K2 with a smaller aperture. The second hole K2 with a smaller aperture is arranged around the circumference of the first hole K1, and the air outlet directions of the first hole K1 and the second hole K2 intersect, so that the airflow flowing out of the second hole K2 impacts the airflow flowing out of the first hole K1, disrupting the flow state of the two airflows, so that the airflow maintains a turbulent state.

[0043] Please refer again Figure 2 Optionally, in the gas outlet side S, the hole structure K located in the peripheral area Q2 includes a third hole K3 and a fourth hole K4, the gas outlet direction of the third hole K3 is biased toward the edge of the heat storage body 10, and the gas outlet direction of the fourth hole K4 is biased toward the central axis of the heat storage body 10. The number of the third holes K3 is greater than the number of the fourth holes K4.

[0044] It can be understood that, as described above, hot air flows out of the heat storage body 10 and enters the accommodating chamber. Since the cavity wall will dissipate heat outward, the air temperature around the cavity wall is lower than the air temperature in the middle of the accommodating chamber. On the air outlet side S, a third hole K3 is provided so that its air outlet direction is biased toward the edge of the heat storage body 10, and a fourth hole K4 is provided with a smaller number than the third hole K3, and its air outlet direction is biased toward the central axis of the heat storage body 10. In this way, the air flow temperature flowing out of the middle part of the heat storage body 10 can be lower than the air flow temperature of the peripheral part. Then, when the outflowing airflow heats the cigarette, due to the heat dissipation of the accommodating chamber wall, the air flow temperature difference between the middle part and the peripheral part is smaller, and the airflow heats the entire cigarette more evenly.

[0045] In addition, in some embodiments, Figure 3 and Figure 4 As shown, the heat storage body 10 is provided with a plurality of groups of hole units at the outlet side S of the heat storage body 10, and the hole units include at least one first hole K1 and at least one second hole K2. The plurality of hole units are evenly arranged at the outlet side S, and the airflow of the heat storage body 10 is more uniform.

[0046] In another embodiment, if Figure 5 As shown, at the gas outlet side S of the heat storage body 10 , the heat storage body 10 is provided with a plurality of groups of hole units, and the hole units include at least one first hole K1 and at least one second hole K2 .

[0047] The hole distribution patterns of two adjacent hole units are different. For example, in one hole unit, the first hole K1 is connected to the second hole K2; in another hole unit, the second hole K2 is arranged on the outer peripheral side of the first hole K1 and is arranged at intervals; in another hole unit, some of the second holes K2 are connected to the first hole K1, and some of the second holes K2 are arranged at intervals from the first hole K1.

[0048] It is easy to understand that the hole units formed by the combination of holes in different positions or shapes have different shapes. The airflow outflow rate, air volume and airflow direction are different, and the airflow vortex formed is conducive to converting the airflow into a turbulent state.

[0049] Optionally, within each unit volume of the heat storage body 10 , the number of the hole structures K is the same.

[0050] It can be understood that in some areas inside the heat storage body 10, the number of hole structures K is distributed more densely, so the volume of airflow passing through this area is larger and the suction resistance is smaller. On the contrary, in areas where the number of hole structures K is distributed less and more sparsely, the volume of airflow passing through is smaller and the suction resistance is greater. Therefore, in each unit volume of the heat storage body 10, the number of hole structures K is the same, and the airflow through the heat storage body 10 is stable and uniform, which improves the suction taste. In addition, the hole structures K inside the heat storage body 10 are evenly distributed, and the heat storage body 10 heats the airflow in the airflow channel 11 formed by the hole structures K more evenly.

[0051] Please refer again Figure 1 Optionally, the plurality of hole structures K include at least one of spherical holes, ellipsoidal holes and cylindrical holes.

[0052] It is also understandable that the shapes of the inner walls of the hole structures K are different for the hole structures K of different shapes. When the airflow hits the inner walls of the hole structures K of different shapes, airflow vortices in different directions are generated, which is conducive to converting the airflow into a turbulent state.

[0053] Optionally, the pore size of the hole structure K is greater than 100 microns, such as 110 microns, 120 microns, 150 microns, or 200 microns. It is understandable that if the pore size of the hole structure K is too small, less gas can pass through the airflow channel 11, resulting in a greater suction resistance for the user to smoke the electronic cigarette during use, affecting the smoking taste.

[0054] Optionally, the space of the multiple hole structures K accounts for 50% of the volume of the heat storage body 10.

[0055] The porosity of the pore structure K inside the heat storage body 10 is greater than or equal to 50%. For example, the porosity is 50%, 60%, 70%, 75%. Porosity refers to the percentage of the pore volume in the block material to the total volume of the material in the natural state. The porosity of the material directly reflects the density of the material. The higher the porosity of the material, the lower the density. That is, in the embodiment of the present application, the space of the multiple pore structures K inside the heat storage body 10 accounts for 50% or more of the volume of the heat storage body 10. For example, the volume of the pore structure K inside the heat storage body 10 accounts for 50%, 60%, 70%, 75% of the main body volume. It can be understood that the space of the pore structure K inside the heat storage body 10 accounts for a large proportion, and the space of the airflow channel 11 formed accounts for a large proportion. When the total volume of the heat storage body 10 does not increase, the airflow is easier to flow in the heat storage body 10.

[0056] Optionally, the material of the heat storage body 10 includes at least one of ceramic and foamed aluminum. Ceramic materials include microporous zirconium oxide ceramics, microporous aluminum oxide ceramics, microporous silicon carbide ceramics, etc. It can be understood that ceramic materials are heated and heat-transfer uniformly, which is conducive to heating the airflow. Foamed aluminum materials have strong heat transfer capacity and are conducive to rapid heating of air.

[0057] Please refer again Figure 4 and Figure 5 Optionally, the heat storage body 10 may be in the shape of a cylinder. It is understandable that the airflow heated by the heat storage body 10 is used to heat the cigarette. And the cigarette is suitable for oral smoking and is usually cylindrical. The shape of the heat storage body 10 is cylindrical, which can be adapted to the shape of the cigarette and the accommodating cavity for heating the cigarette. The airflow discharged from the heat storage body 10 is also suitable for heating cylindrical cigarettes. However, in actual applications, the heat storage body 10 may also be in other shapes, and the present application is not limited thereto.

[0058] Optionally, the cylindrical heat storage body 10 has a diameter of 4 mm to 12 mm and a height of 4 mm to 12 mm. The setting of the diameter and height is conducive to providing an effective convection heat exchange area, which is conducive to heat exchange. In addition, the heat storage body 10 of this size has a small mass and is convenient for rapid heating.

[0059] The present application also provides an electronic smoking device, comprising the above-mentioned heat storage body 10. The structure and function of the heat storage body 10 are exactly the same as those of the heat storage body 10 in the above-mentioned embodiments, and will not be described in detail here.

[0060] The present application provides a heat storage body and an electronic smoking device for an electronic smoking device, wherein the heat storage body includes an air inlet side and an air outlet side. A plurality of air flow channels are arranged in the heat storage body, and the plurality of air flow channels are used to change the air flow flowing through the heat storage body into a turbulent state. The air flow channel extends from the air inlet side to the air outlet side. The plurality of air flow channels are interconnected, and the air flow channel includes a plurality of interconnected hole structures. In the embodiment of the present application, the air flow channel in the heat storage body is arranged, the plurality of air flow channels are interconnected, and the air flow channel includes an interconnected hole structure, so that the air flow passing through the heat storage body becomes a disordered turbulent state, the laminar boundary layer is destroyed, and the air flow can fully contact the inner surface of the air flow channel of the heat storage body to complete the convective heat exchange process. The laminar boundary layer of the air flow in the turbulent state is weakened, and the convective heat transfer coefficient between the heat storage body and the air flow is improved, thereby improving the convective heat exchange capacity, and the heat energy conversion can be completed quickly and efficiently.

[0061] The above is a detailed introduction to a heat storage body and an electronic cigarette provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A heat storage body, characterized in that: For electronic smoking devices; The heat storage body includes an air inlet side and an air outlet side; The heat storage body is provided with a plurality of airflow channels, and the plurality of airflow channels are used to change the airflow flowing through the heat storage body into a turbulent state; the airflow channels extend from the air inlet side to the air outlet side; the plurality of airflow channels are interconnected, and the airflow channels include a plurality of interconnected hole structures; two adjacent airflow channels are interconnected through at least one of the hole structures; The air outlet side includes a middle area and a peripheral area surrounding the middle area; in the top view of the air outlet side, the density of the hole structure located in the middle area is less than the density of the hole structure located in the peripheral area.

2. The heat storage body according to claim 1, characterized in that: In the top view of the air outlet side, the density of the hole structure increases gradually from the middle area to the peripheral area.

3. The heat storage body according to claim 1, characterized in that: The hole structure comprises a first hole and a second hole, and the hole diameter of the first hole is larger than the hole diameter of the second hole; In the top view of the air outlet side, a plurality of the second holes are arranged around a first hole; and the air outlet direction of the first hole intersects with the air outlet direction of the second hole.

4. The heat storage body according to claim 1, characterized in that: The plurality of hole structures include at least one of spherical holes, ellipsoidal holes and cylindrical holes.

5. The heat storage body according to claim 1, characterized in that: The pore size of the pore structure is greater than 100 microns.

6. The heat storage body according to claim 1, characterized in that: The space of the plurality of hole structures occupies 50% of the volume of the heat storage body.

7. The heat storage body according to claim 1, characterized in that: The material of the heat storage body includes at least one of ceramic and foamed aluminum.

8. An electronic smoking device, characterized in that: It comprises the heat storage body as described in any one of claims 1 to 7.

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