WO2016023174A1 - Tobacco evaporator and tobacco heating control method therefor - Google Patents

Abstract

A tobacco evaporator and a tobacco heating control method therefor. The tobacco evaporator comprises a casing (1). The casing (1) comprises an upper cover (10), a lower cover (20) and a heating element (30). A concave part (21) with an opening facing the upper cover (10) is arranged on the lower cover (20). The upper cover (10) covers the opening of the concave part (21) to form a first accommodating cavity (26) that is used for accommodating a tobacco flake (4) and provided with a flat cross section. The heating element (30) is tightly attached and fixed to the wall surface (11) of the upper cover (10) right against the opening of the concave part of the lower cover, or the bottom wall (210) of the concave part (21) is located on the surface of the outer part of the first accommodating cavity (26). Therefore, the tobacco flake can be flatly spread in the first accommodating cavity, so the tobacco quantity on the unit heating area is reduced, and the tobacco can be more fully and uniformly heated; the flat first accommodating cavity can be used for expanding the heating region, and the diameter of the heating region is reduced, so more space can be used for thermal insulation and heat preservation, the appearance size of the tobacco evaporator is reduced, the tobacco evaporator is convenient to carry, and the technical problem in the prior art that the size and the volume of the tobacco evaporator are large and thus the tobacco waste is caused by insufficient and non-uniform tobacco heating is solved.

Description

 Tobacco evaporator and tobacco heating control method thereof Technical field

 The invention relates to the field of electronic cigarette technology, in particular to a tobacco evaporator using sheet tobacco and a tobacco heating control method thereof.

Background technique

At present, the electronic smoking device has two modes: direct combustion and no combustion. The electronic smoking device using direct combustion method is extremely harmful to the human body due to the high temperature of the pyrolysis material generated by burning high temperature, and must be eliminated by the market; The device controls the temperature of the tobacco or the herb to prevent the cracking reaction from occurring, and at the same time satisfies the temperature range in which the nicotine or the desired substance is volatilized, thereby achieving the purpose of healthy smoking.

The conventional tobacco evaporator generally adopts a heating method in which the heating wire is fixed on the periphery of a bowl-shaped container to heat the tobacco or the herb, and the heating method can effectively heat the tobacco or the herb near the wall of the bowl container. However, the effect of heating tobacco or herbs located in the middle of the bowl-shaped container wall is not satisfactory, resulting in insufficient heating or unevenness of the tobacco or herb in the container, affecting the mouthfeel, or some tobacco or herb can be discarded without being sufficiently heated. , causing waste. In addition, due to the shape of the bowl-shaped container, the size and space of the bowl-shaped container is large, which makes the size and volume of the entire tobacco evaporator larger, which leads to inconvenient use, affects the user experience, and thus affects the market recognition of the product. degree.

Summary of the invention

In order to solve the technical problem that the size and volume of the tobacco evaporator in the prior art are large, and the tobacco heating is insufficient and uneven, causing tobacco waste and affecting the mouthfeel, the present invention provides a new tobacco evaporator and a tobacco heating control method thereof.

In order to achieve the above object, the present invention adopts a technical solution of providing a tobacco evaporator including a casing, the casing including an upper cover, a lower cover engaged with the upper cover, and a heating member for heating the tobacco sheet a cigarette holder for the user to be sucked is connected to one end of the lower cover, wherein a surface of the lower cover facing the upper cover is provided with a recess facing the upper cover, and a bottom wall of the recess Facing the upper cover, the upper cover covers the opening of the recess to form a first receiving cavity for receiving a flat section of the tobacco sheet, and the heating member is closely attached to the upper cover The cover faces the wall of the opening or abuts against a surface of the bottom wall that is outside the first receiving chamber.

 Preferably, the tobacco sheet is flat and its cross-sectional shape is matched to the shape of the bottom wall.

Preferably, the tobacco sheet has a thickness of 0.1 mm to 20 mm, a depth of the first receiving chamber is equivalent to a thickness of the tobacco sheet, and a gas circulation passage is formed in the first receiving chamber.

 Preferably, the heating member is in the form of a sheet, a film or a mesh, and the size of the heating member is equivalent to the size of the opening or the size of the bottom wall.

 Preferably, the bottom wall is made of a heat conductive material such as stainless steel or aluminum alloy.

Preferably, the first accommodating chamber is provided with an air inlet communicating with the outside atmosphere and an air outlet communicating with the cigarette holder, and the smoke generated after the tobacco sheet is heated reaches the cigarette holder via the air outlet.

Preferably, the air inlet and the air outlet are formed on an end surface of the upper cover and the lower cover, and the air inlet is opened on a side wall of the concave portion away from the cigarette holder, The air outlet is opened on the side wall of the recess adjacent to the mouthpiece.

Preferably, the tobacco evaporator further includes a control panel electrically connected to the heating member and used to control a heating temperature of the heating member, and a temperature sensing member for detecting a heating temperature of the heating member, the control panel The temperature sensing member is fixed to the heating member in a pasting manner at a position where the lower cover is close to the heating member.

Preferably, a first insulating cotton is disposed between the heating member and the control panel, and a second insulating cotton is disposed at a position of the upper cover facing the first receiving cavity.

 Preferably, the tobacco evaporator further comprises a rechargeable battery electrically connected to the control panel, the temperature sensing member and the heating member a second receiving cavity is opened on a side of the lower cover away from the mouthpiece, and the rechargeable battery is installed in the second receiving cavity.

 Preferably, a charging port is opened on the casing of the tobacco evaporator, and the charging port communicates with the rechargeable battery.

The invention also provides a heating control method for a tobacco evaporator, characterized in that the tobacco evaporator comprises a casing, the casing comprises an upper cover, a lower cover engaged with the upper cover, and a heating tobacco sheet a heating member, a control panel electrically connected to the heating member and used to control a heating temperature of the heating member, a temperature sensing member for detecting a heating temperature of the heating member, and the heating member, the control panel a rechargeable battery electrically connected to the temperature sensing member, a surface of the lower cover facing the upper cover is provided with a recess facing the upper cover, and a bottom wall of the recess faces the upper cover The upper cover covers the opening of the recess to form a first receiving cavity for receiving a flat section of the tobacco sheet, and the heating member is closely attached to the bottom wall at the first The temperature sensing member is fixedly attached to the heating member and electrically connected to the control panel (40) on a surface of the exterior of the receiving chamber, and the heating control method comprises:

 S1 The temperature sensing member detects a heating temperature of the heating member, and converts the heating temperature into a temperature signal of a predetermined format, and sends the temperature signal to the control panel;

 S2 The control board receives the temperature signal sent by the temperature sensing component, and compares the temperature signal with a set temperature stored in the control panel;

 The set temperature is a temperature value set by the user according to the taste requirement;

 S3 The control panel determines whether the difference between the temperature signal and the set temperature is within a predetermined range, and if so, proceeds to step S1, and if not, proceeds to step S4;

 S4, the control board adjusts the heating power of the heating element according to the determination result of step S3, thereby adjusting the heating temperature of the heating element;

In step S4, when the determination result is that the heating temperature represented by the temperature signal is higher than the set temperature, the heating power of the heating member is lowered; when the judgment result is that the heating temperature represented by the temperature signal is lower than the When the temperature is set, the heating power of the heating member is raised.

After adopting the above technical solution, the present invention can obtain the following beneficial technical effects: the lower cover of the tobacco evaporator is provided with a recess facing the upper cover, and the bottom wall of the concave portion faces the upper cover, and the upper cover covers the opening of the concave portion to form A flat first receiving cavity for accommodating the tobacco sheet, the heating member being closely attached to the wall surface of the opening of the upper cover facing the recess of the lower cover or the surface of the bottom wall outside the first receiving cavity. thus, The tobacco sheet can be spread flat in the first accommodating chamber to reduce the amount of tobacco on the unit heating area, and at the same time, the heating member is in close contact with the bottom wall, so that the tobacco in the first accommodating chamber can be heated more fully and uniformly. The flat first receiving cavity extends the area available for heating, reducing the diameter of the heating zone, so that more space can be used for heat insulation and heat preservation, and the outer shape of the tobacco evaporator is reduced, which is convenient to carry and solve. The prior art tobacco evaporator has a large size and volume, and the problem of insufficient tobacco heating and unevenness causes tobacco waste and affects the mouthfeel.

DRAWINGS

 The embodiments of the present invention will be further described with reference to the accompanying drawings and embodiments, in which:

 1(a) and 1(b) are schematic views showing different orientation structures of a tobacco evaporator according to the present invention;

 2 is a schematic structural view of an upper cover of a tobacco evaporator according to the present invention;

 3 is a schematic structural view of a lower cover of a tobacco evaporator according to the present invention;

 Figure 4 (a) is a cross-sectional view of the lower cover of the tobacco evaporator according to the present invention;

 Figure 4 (b) is an enlarged view of a portion of the structure of Figure 4 (a);

 Figure 5 (a) is a cross-sectional view of the tobacco evaporator according to the present invention;

 Fig. 5(b) is an enlarged view showing a partial structure of Fig. 5(a).

detailed description

In order to solve the technical problem that the size and volume of the tobacco evaporator in the prior art are large, and the tobacco heating is insufficient and uneven, causing tobacco waste and affecting the mouthfeel, the main technical scheme adopted by the present invention is: on the lower cover of the tobacco evaporator Providing a recess facing the upper cover, and a bottom wall of the recess faces the upper cover, the upper cover covers the opening of the recess to form a flat first receiving cavity for accommodating the tobacco sheet, and the heating member is closely attached to the bottom wall The surface of the outside of the first accommodating chamber can sufficiently and uniformly heat the tobacco sheet in the first accommodating chamber, and at the same time, the shape of the tobacco evaporator can be made small, convenient to use and carry.

 The embodiments of the present invention will be specifically described below in conjunction with the specific drawings.

1(a) and 1(b) are schematic views showing different orientation structures of the tobacco evaporator according to the present invention, respectively. 1(a) is a front view of the tobacco evaporator. As can be seen from FIG. 1(a), the tobacco evaporator includes a casing 1 and a mouthpiece 2 connected to the casing 1 for the user to smoke, the casing 1 The surface 1a is provided with an indicator light 3 for displaying the heating state of the tobacco evaporator. Fig. 1(b) is a side view of the tobacco evaporator. As can be seen from Fig. 1(b), the side 1b of the casing 1 is provided with an adjustment button 5 for the user to adjust the heating temperature to the tobacco.

The casing 1 includes an upper cover 10 and a lower cover 20 joined to the upper cover 10. Figures 2 and 3 show the structural views of the upper cover 10 and the lower cover 20 of the tobacco evaporator according to the present invention, respectively.

 As can be seen from FIG. 2, the upper cover 10 is a half-shaped casing, and the adjustment button 5 is disposed on the side wall of the upper cover 10.

As can be seen from FIG. 3, the lower cover 20 is substantially elliptical, and one end is connected with a mouthpiece 2 for the user to suck. The surface 20a of the lower cover 20 facing the upper cover 10 is provided with an opening facing the upper cover 10 for placing tobacco. The recess 21 of the sheet, the bottom wall 210 of the recess 21 faces the upper cover 10. In the present embodiment, the length extending from the bottom wall 210 of the recess 21 toward the opening of the recess 21 is defined as the depth of the recess 21, and the depth of the recess 21 is equivalent to the thickness of the tobacco sheet, which may be slightly larger than the thickness of the tobacco sheet, or may be slightly Less than the thickness of the tobacco sheet. The surface 20a of the lower cover 20 is provided with a plurality of screw holes 22 for fixing the upper cover 10 and the lower cover 20. The plurality of screw holes 22 can be evenly distributed on the surface 20a, or can be spread on the surface 20a according to a specific structure. In this embodiment, a part of the screw holes 22 are preferably distributed around the concave portion 21, and the remaining screw holes 22 are distributed on the side of the surface 20a away from the concave portion 21, so that the upper cover 10 and the lower cover 20 are more stably and firmly connected. .

The upper cover 10 and the lower cover 20 are engaged in a plurality of manners, for example, a bolt fastening manner, a snap fastening manner, a rotary engagement manner, and the like. In the embodiment, it is preferable that the upper cover 10 and the lower cover 20 are connected by a rotational joint. In addition, it is fixed by screws. The surface 20a of the lower cover 20 is provided with a rotating mechanism 23 that engages with the upper cover 10 and an arcuate guiding groove 24 for guiding the relative rotation of the upper cover 10 and the lower cover 20. This engagement enables the upper cover 10 and the lower cover. The assembly and disassembly of the 20 is simpler and easier for the user to replace the tobacco sheet.

 Figure 4 (a) shows the present A cross-sectional view of the lower cover 20 of the tobacco evaporator according to the present invention. As can be seen from the figure, in the present embodiment, the mouthpiece 2 is connected to the lower cover 20. Specifically, one end of the lower cover 20 is provided with a connecting portion for connecting the mouthpiece 2 The connecting portion is hollow cylindrical or oblate, and the cigarette holder 2 is inserted into the hollow portion of the connecting portion and has an interference fit with the connecting portion to achieve a good seal between the mouthpiece 2 and the lower cover 20, and the mouthpiece 2 is hollow. A portion forms a smoke passage that connects the atomization chamber of the tobacco sheet.

4(b) is an enlarged partial view of the structure of FIG. 4(a). As can be seen from FIG. 4(a), the tobacco evaporator further includes a heating member 30 which is in the form of a sheet, a film or a mesh. For example, a heat-generating metal sheet, an electric heating film or a heating net, etc., the heating member 30 is closely attached to the outer surface of the bottom wall 210 of the recess 21 for heating the tobacco sheet 4 (refer to FIG. 5(a)), In the embodiment, the heating element 30 is composed of an electric heating film, which is a metal film capable of generating heat after being energized. In operation, the electric heating film is used as a heating element, and the electric heating film directly contacts the bottom wall 210 of the recess 21 and passes through the bottom wall. The heat is introduced into the first accommodating chamber 26 to heat the tobacco sheet 4. In the present embodiment, the tobacco sheet 4 is preferably flat, the size of which is equivalent to the size of the bottom wall 210, and the size of the heating member 30 is also equivalent to the size of the bottom wall 210, whereby each portion of the tobacco sheet 4 can pass The bottom wall 210 is indirectly heated by the heating member 30, enabling the temperature of the heating member 30 to be transferred to the tobacco sheet 4 more quickly, which is a more sufficient and uniform heating of the tobacco sheet 4. In addition, in order to avoid a short circuit between the heating member 30 and the bottom wall 210 of the recess, preferably, in the embodiment, the outer surface of the bottom wall 210 is adhered with an insulating layer, that is, the insulating layer is disposed on the outer surface of the bottom wall 210 and heated. Between the members 30, the insulating layer is preferably an aluminum oxide layer, which can function as an insulation isolation, thereby avoiding a short circuit between the heating member 30 and the bottom wall 210. At the same time, since the thickness of the aluminum oxide layer is thin, the heat can be The bottom wall 210 is quickly transferred, which in turn heats the tobacco sheet 4, greatly increasing the rate of temperature rise in the first receiving chamber 26.

The tobacco evaporator further includes a control panel 40 for controlling the heating temperature of the heating member 30 and a temperature sensing member 50 for detecting the heating temperature of the heating member 30. The control board 40 is preferably a PCB circuit board on which a control element is mounted or an integrated chip integrated with a control circuit, which is disposed at a position of the lower cover 20 near the heating member 30, facilitates electrical connection with the heating member 30, reduces the length of the lead, and purifies the The wiring structure inside the cover 20. The temperature sensing member 50 is fixed on the heating member 30 in a pasting manner, and can sense the heating temperature of the heating member 30 in real time, and convert the induced heating temperature into a temperature signal having a certain parameter, and send it to the control panel 40, the control panel. 40 can adjust the heating power of the heating element 30 in time according to the received temperature signal. A first insulating cotton 61 is disposed between the heating member 30 and the control board 40. The first insulating cotton 61 has the characteristics of high temperature resistance, non-flammability, low thermal conductivity, and the like, and is used to hinder the heat loss generated by the heating member 30. The effect of heat and heat preservation, on the one hand, can make as much heat as possible to heat the tobacco sheet, improve heating efficiency, and on the other hand, prevent heat from being conducted to the lower cover, and avoid the temperature of the casing of the tobacco evaporator is too high. Affect the experience.

The power source of the tobacco evaporator can be externally connected or battery-powered. This embodiment is preferably powered by a rechargeable battery, which can release the environment and location of the user using the tobacco evaporator by means of an external power source. limit. The rechargeable battery 70 is electrically connected to the control board 40, the temperature sensing member 50 and the heating member 30. The second receiving chamber 25 is opened on a side of the lower cover 20 away from the mouthpiece 2, and the rechargeable battery 70 is mounted in the second receiving chamber 25. In order to conveniently charge the rechargeable battery 70 without taking out the rechargeable battery 70, the housing 1 of the tobacco evaporator is provided with a charging port 71, The charging port 71 is in communication with the rechargeable battery 70.

 Figure 5 (a) shows The present invention relates to a cross-sectional view of a tobacco evaporator which has an upper cover 10 joined to the lower cover 20 and a tobacco sheet 4 placed in the recess 21 as compared with FIG. 4(a). Figure 5 (b) is an enlarged view of a portion of the structure of Figure 5 (a). As can be seen from Figure 5 (b), after the upper cover 10 is joined to the lower cover 20, the partial structure of the upper cover 10 covers the recess of the lower cover 20. The opening of 21, such that upper cover 10 and lower cover 20 together define a first receiving cavity 26, while the first receiving cavity 26 is also an atomizing chamber in which the tobacco sheet 4 produces atomization, in communication with the smoke passage of the mouthpiece 2. Specifically, after the upper cover 10 and the lower cover 20 are engaged, the wall surface 11 located inside the upper cover 10 abuts against the surface 20a of the lower cover 20, thereby closing the opening of the lower cover recess 21, whereby the wall surface 11 of the upper cover is closed. The lower cover recess 21 defines a first receiving cavity 26. A second insulating cotton 62 is disposed at a position facing the first receiving cavity 26 of the upper cover 10. Specifically, the second insulating cotton 62 is disposed between the outer casing of the upper cover 10 and the wall surface 11 to prevent the first receiving cavity. The heat conduction in 26 diffuses to the upper cover 10, affecting the use experience, and functions as heat insulation and heat preservation.

 The first accommodating chamber 26 accommodates the tobacco sheet 4. In the present embodiment, the tobacco sheet 4 is preferably a press-formed flaky tobacco, The cross section can be a shape such as a circle, a polygon, or a profile. The thickness thereof is preferably from 0.1 mm to 20 mm. In a more preferred embodiment, the thickness of the tobacco sheet 4 is selected to be 2 mm, which not only satisfies the disposable consumption of ordinary users, but also avoids the trouble of frequently changing the tobacco sheet, while avoiding the tobacco sheet 4 Excessive thickness causes a problem of insufficient heating. In order to better atomize the tobacco sheet 4, in general, the tobacco sheet 4 is in a slightly bulky state, that is, under the action of external pressure, the thickness of the tobacco sheet 4 can be varied within a certain range, whereby the air can be The entry into the voids in the tobacco sheet 4 allows the tobacco sheet 4 to be atomized more thoroughly, while at the same time not increasing the volume of the tobacco evaporator due to the excessive thickness of the tobacco sheet 4.

Further, using the press-formed tobacco sheet 4, after the tobacco sheet 4 is used, the entire sheet of tobacco can be taken out from the tobacco evaporator to avoid the cleaning trouble caused by the shredded tobacco. The tobacco sheet 4 is placed in the first accommodating chamber 26 in direct contact with the surface of the bottom wall 210 located in the first accommodating chamber 26 (i.e., the inner surface of the bottom wall 210). The amount of tobacco per unit heating area is small, which facilitates rapid evaporation of nicotine from tobacco, fully ensures heating efficiency and shortens the baking time of tobacco; and the tobacco sheet 4 is directly heated, and the taste is more realistic, which can effectively improve user satisfaction. The heating sheet 30 is heated by the bottom wall 210 for the tobacco sheet 4, and the bottom wall 210 is made of a heat conductive material, preferably stainless steel or aluminum alloy, and the heat transfer is fast, so that the heating effect of the tobacco sheet 4 is better.

When the tobacco sheet 4 is placed in the first accommodating chamber 26, the thickness direction thereof is parallel to the depth direction of the concave portion 21, and the depth direction of the concave portion 21 is the depth direction of the first accommodating chamber 26. The shape of the bottom wall 210 of the recess 21 matches the cross-sectional shape of the tobacco sheet 4, that is, a circular, polygonal or irregular shape, the depth of the first accommodating chamber 26 is equivalent to the thickness of the tobacco sheet 4, and the first accommodating chamber 26 A gas circulation passage is formed therein. That is, the depth of the first accommodating chamber 26 may be the same as or slightly larger than the thickness of the tobacco sheet 4 before being placed in the first accommodating chamber 26, and the upper lid 10 and the lower lid 20 are not correct. The tobacco sheet 4 is subjected to a pressing action, which is a gap between the tobacco sheets in the tobacco sheet 4 or a gap between the tobacco sheet 4 and the upper lid 10 or the lower lid 20; or the depth of the first receiving chamber 26 is smaller than that of the tobacco The sheet 4 is placed in a thickness before the first accommodating chamber 26, and when the tobacco sheet 4 is placed in the first accommodating chamber 26, the upper lid 10 and the bottom wall 210 are pressed against the tobacco sheet 4 to reduce the thickness thereof. In this case, in order to allow air or generated smoke to smoothly flow through the first accommodating chamber 26, at least one protruding rib is formed on the wall surface 11 of the upper cover 10, and a gas circulation passage is formed in the space around the rib. In this embodiment, it is preferable that the depth of the first accommodating cavity 26 is slightly larger than the thickness of the tobacco sheet 4 before the first accommodating cavity 26, and the gap between the tobacco sheet 4 and the upper cover 10 or the lower cover 20 is preferably such that The distance between the tobacco sheet 4 and the upper cover 10 or the lower cover 20 is 0.1 mm to 2 mm, thereby ensuring that the tobacco sheet 4 does not have a large sway in the first accommodating chamber 26, and also avoids the first accommodating space. If the size of 26 is too large, the shape of the tobacco evaporator is large, and at the same time, when the tobacco sheet 4 is heated, a certain space is reserved to ensure air circulation, so that the heating effect of the tobacco sheet 4 is better and the utilization rate is higher.

As shown in FIG. 5(b), the first accommodating chamber 26 is provided with an air inlet 261 communicating with the outside atmosphere and an air outlet 262 communicating with the mouthpiece 2. The smoke generated after the tobacco sheet 4 is heated reaches the mouthpiece 2 via the air outlet 262. The gas circulation passage of the first accommodating chamber 26 communicates the air inlet 261 and the air outlet 262, that is, the gas can sequentially pass through the air inlet 261, the gas circulation passage, and the air outlet 262, thereby being in communication with the mouthpiece 2. The air inlet 261 and the air outlet 262 may be opened on the side wall of the recess 21 (the wall surface perpendicular to the bottom wall 210), wherein the air inlet 261 is opened on the side wall of the recess 21 away from the mouthpiece 2, and the air outlet 262 is opened. On the side wall of the recess 21 adjacent to the mouthpiece 2, fluid communication with the mouthpiece 2 is facilitated. In the present embodiment, it is preferable that the air inlet 261 and the air outlet 262 are formed on the end faces of the upper cover 10 and the lower cover 20, as shown in FIG. 5(b), the arrows in the figure indicate the direction of the airflow, and the outside atmosphere passes. The air inlet 261 enters the first accommodating chamber 26, and the tobacco sheet 4 is heated by the heating member 30 to chemically react with oxygen in the outside atmosphere, and the generated nicotine or other required substances form a smoke-like substance, which is used by the user. Next, from the first accommodating chamber 26 via the air outlet 262 to the passage 27 connecting the suction nozzle 2 and the first accommodating chamber 26, and finally through the passage 27 into the internal passage of the mouthpiece 2, that is, the smoke passage of the mouthpiece 2, and then sucked by the user.

Different users have different requirements on the taste and the amount of smoke, and the user can set the heating temperature of the tobacco sheet 4 by adjusting the adjustment button 5 on the casing 1. Specifically, after the upper cover 10 and the lower cover 20 are engaged, the adjustment button 5 on the side of the upper cover 10 faces the control panel 40 on the lower cover 20. When the user needs to set the heating temperature of the tobacco sheet 4, the adjustment button is pressed. 5. At this time, the adjustment button on the control panel 40 can be activated to send a corresponding command to the control terminal. The control terminal adjusts the heating power of the heating member 30 (for example, adjusting the voltage applied across the heating member 30 or flowing through the heating member 30). The current) adjusts the heating temperature of the heating member 30, thereby limiting the heating power of the heating member 30 to a fixed value. The temperature sensing member 50 fixed on the heating member 30 in a pasting manner can sense the heating temperature of the heating member 30 in real time, and convert the sensed heating temperature into a temperature signal having a certain parameter, and send it to the control board 40, and the control board 40 The heating power of the heating element 30 can be adjusted in time according to the received temperature signal. For example, the control board 40 determines that the heating temperature of the heating element 30 is higher or lower than the temperature set by the user, and can be adjusted by changing the heating power of the heating element 30. . The indicator light 3 for displaying the heating state of the tobacco evaporator is electrically connected to the control panel 40, and the heating temperature or gear position of the tobacco evaporator can be distinguished by different bright colors. For example, when the temperature is heated, the indicator light 3 is red, and the medium temperature is heated. When the indicator light 3 is yellow, the indicator light 3 is displayed in green when the temperature is low.

The working principle of the tobacco evaporator according to the present invention will be specifically described below. When smoking, the tobacco evaporator is turned on, and the heating member 30 is powered by the rechargeable battery 70, and dissipates heat, which is transferred to the first accommodating chamber 26 through the bottom wall 210 of the recess 21, so that the temperature in the first accommodating chamber 26 rises rapidly. The tobacco sheet 4 is heated. At the same time, the temperature of the heating element 30 is detected in real time through the temperature sensing member 50 electrically connected to the control board 40, and the temperature is converted into a certain temperature signal and sent to the control board 40, and the control board 40 adjusts the heating power of the heating element 30. The heating temperature of the heating member 30 is maintained at a temperature range set by the user to ensure the heating effect and to ensure the user's desired mouthfeel. When the user needs to adjust the heating temperature of the heating member 30, it can be realized by adjusting the button 5, and details are not described herein again. After the tobacco sheet 4 is heated, it chemically reacts with the air in the first accommodating chamber 26 to volatilize the desired substance such as nicotine, which atomizes to generate smoke, and the generated smoke passes through the gas circulation passage in the first accommodating chamber 26. The air outlet 262 and the communication passage 27 enter the mouthpiece 2 to be sucked by the user.

 The tobacco sheet heating control method of the above tobacco evaporator is as follows:

 S1 The temperature sensing member 50 detects the heating temperature of the heating member 30, and converts the heating temperature into a temperature signal of a predetermined format, and sends it to the control panel 40;

 S2 The control board 40 receives the temperature signal sent by the temperature sensing component 50 and compares the temperature signal with the set temperature stored in the control board 40;

Wherein, the set temperature is a temperature value set by the user according to the taste requirement. For example, when the tobacco evaporator is at a high level, the set temperature is high, the indicator light 3 is red, and when the tobacco evaporator is in the middle speed, the set temperature is moderate, and the indication is The lamp 3 is yellow, and when the tobacco evaporator is in a low gear, the set temperature is low and the indicator light 3 is green.

 S3 The control panel 40 determines whether the difference between the temperature signal and the set temperature is within a predetermined range, and if so, proceeds to step S1, and if not, proceeds to step S4;

 S4 The control board 40 adjusts the heating power of the heating member 30 according to the determination result of step S3, thereby adjusting the heating temperature of the heating member 30;

In step S4, when the judgment result is that the heating temperature represented by the temperature signal is higher than the set temperature, the heating power of the heating member 30 is lowered; when the judgment result is that the heating temperature represented by the temperature signal is lower than the set temperature, the heating member is raised. The heating power of 30; the power adjustment of the heating member 30 can be various, for example, adjusting the voltage across the heating member 30 or the current flowing through the heating member 30.

In this embodiment, by providing an opening toward the lower cover 20 of the tobacco evaporator toward the concave portion 21 of the upper cover 10, and the bottom wall of the concave portion 21 faces the upper cover 10, the upper cover 10 covers the opening of the concave portion 21 to be formed for The flat first receiving chamber 26 of the tobacco sheet 4 is accommodated, whereby the tobacco sheet 4 can be spread flat in the first receiving chamber 26, reducing the amount of tobacco per unit heating area, while the heating member 30 is in close contact with On the bottom wall 210, the tobacco in the first accommodating chamber 26 can be heated more fully and uniformly. The flat first receiving chamber 26 extends the area available for heating, on the one hand reducing the diameter of the heating zone, so that more space is available for thermal insulation and insulation, while also reducing the outer dimensions of the tobacco evaporator It is convenient to carry, and solves the technical problem that the size and volume of the tobacco evaporator in the prior art are large, and the tobacco heating is insufficient and uneven, causing tobacco waste and affecting the mouthfeel.

Of course, the above is only an optimal embodiment of the present invention, and many modifications can be made on the basis of the above. For example, in one of the modifications, the heating member 30 is not disposed on the bottom wall 210 of the lower cover recess 21, but is tight. The fixing member 30 is attached to the wall surface 11 of the opening of the upper cover 10 facing the recess 21. Specifically, the heating member 30 can be disposed between the second insulating cotton 62 and the wall surface 11 of the upper cover 10, and is closely attached to the wall surface 11 On the surface of the opening facing away from the recess 21, the diameter of the heating zone can also be reduced, and the tobacco sheet 4 in the first accommodation space 26 is sufficiently uniformly heated.

Those skilled in the art should understand that the above are only the preferred embodiments of the present invention, and may be modified or changed according to the above description, and the improvements and transformations made without creative work should belong to the appended claims. The scope of protection required.

Claims (13)

A tobacco evaporator, comprising a casing (1), the casing (1) comprising an upper cover (10), a lower cover (20) engaged with the upper cover (10), and for heating a heating member (30) of the tobacco sheet (4), one end of the lower cover (20) is connected with a mouthpiece (2) for the user to suck, and the lower cover (20) is opposite to the upper cover (10) The surface (20a) is provided with a recess (21) opening toward the upper cover (10), the bottom wall (210) of the recess (21) is opposite to the upper cover (10), and the upper cover (10) Covering the opening of the recess (21) to form a first receiving cavity (26) for receiving a flat section of the tobacco sheet (4), the heating member (30) being closely attached thereto The upper cover (10) faces the wall surface (11) of the opening or is attached to a surface of the bottom wall (210) which is located outside the first receiving cavity (26). A tobacco evaporator according to claim 1, wherein said tobacco sheet (4) is flat and has a cross-sectional shape that matches the shape of said bottom wall (210). The tobacco evaporator according to claim 1, wherein said tobacco sheet (4) has a thickness of 0.1 mm to 20 mm, a depth of said first accommodating chamber (26) and said tobacco sheet (4) The thickness is equivalent, and a gas circulation passage is formed in the first accommodation chamber (26). A tobacco evaporator according to claim 1, wherein said heating member (30) is in the form of a sheet, a film or a mesh, the size of said heating member (30) and the size of said opening or said The bottom wall (210) is of comparable size. A tobacco evaporator according to any one of claims 1 to 4, wherein the bottom wall (210) is made of a stainless steel or aluminum alloy material. A tobacco evaporator according to claim 1, wherein said first accommodating chamber (26) is provided with an air inlet (261) communicating with the outside atmosphere and an air outlet communicating with said mouthpiece (2) ( 262), the smoke generated after the tobacco sheet (4) is heated reaches the mouthpiece (2) via the air outlet (262). A tobacco evaporator according to claim 6, wherein said air inlet (261) and said air outlet (262) are formed to engage said upper cover (10) and said lower cover (20) On the end surface, the air inlet (261) is opened on a side wall of the recess (21) away from the mouthpiece (2), and the air outlet (262) is opened in the recess (21) near the mouthpiece (2) on the side wall. A tobacco evaporator according to claim 1 wherein said tobacco evaporator further comprises a control panel electrically coupled to said heating member (30) for controlling the heating temperature of said heating member (30) (40) And a temperature sensing member (50) for detecting a heating temperature of the heating member (30), the control panel (40) being disposed at a position of the lower cover (20) adjacent to the heating member (30), The temperature sensing member (50) is fixed to the heating member (30) in a pasted form. The tobacco evaporator according to claim 8, wherein a first insulating cotton (61) is disposed between the heating member (30) and the control board (40), and the upper cover (10) A second insulating cotton (62) is disposed at a position facing the first receiving cavity (26). A tobacco evaporator according to claim 8 wherein said tobacco evaporator further comprises an electrical connection to said control panel (40), said temperature sensing member (50) and said heating member (30) a rechargeable battery (70), a side of the lower cover (20) away from the mouthpiece (2) is provided with a second receiving cavity (25), and the rechargeable battery (70) is mounted in the second receiving cavity (25) Medium. The tobacco evaporator according to claim 10, wherein the casing (1) of the tobacco evaporator is provided with a charging port (71), and the charging port (71) communicates with the rechargeable battery (70). ). A tobacco evaporator, comprising a casing (1), the casing (1) comprising an upper cover (10), a lower cover (20) engaged with the upper cover (10), and for heating a heating member (30) of the tobacco sheet (4), one end of the lower cover (20) is connected with a mouthpiece (2) for the user to suck, and the lower cover (20) is opposite to the upper cover (10) The surface (20a) is provided with a recess (21) opening toward the upper cover (10), the bottom wall (210) of the recess (21) is opposite to the upper cover (10), and the upper cover (10) Covering the opening of the recess (21) to form a first receiving cavity (26) for accommodating the tobacco sheet (4) in a flat cross section, the tobacco sheet (4) being a press-formed sheet Tobacco having a thickness of 0.1 mm to 20 mm, a depth of the first receiving cavity (26) is greater than a thickness of the tobacco sheet (4), and the heating member (30) is closely attached to the bottom wall (210) On the surface of the outside of the first accommodating chamber (26), the heating member (30) is in the form of a sheet, a film or a mesh, and the size of the heating member (30) is The bottom wall (210) of the recess (21) is sized, and the first receiving chamber (26) is provided with an air inlet (261) communicating with the outside atmosphere and an air outlet communicating with the mouthpiece (2) ( 262), the smoke generated after the tobacco sheet (4) is heated reaches the mouthpiece (2) via the air outlet (262). A method for controlling heating of a tobacco evaporator, characterized in that the tobacco evaporator comprises a casing (1), the casing (1) comprising an upper cover (10) engaged with the upper cover (10) a lower cover (20), a heating member (30) for heating the tobacco sheet (4), a control panel (40) electrically connected to the heating member (30) and used to control the heating temperature of the heating member (30) a temperature sensing member (50) for detecting a heating temperature of the heating member (30) and electrically connected to the heating member (30), the control board (40), and the temperature sensing member (50) a rechargeable battery (70), a surface (20a) of the lower cover (20) facing the upper cover (10) is provided with a recess (21) opening toward the upper cover (10), the recess The bottom wall (210) of (21) faces the upper cover (10), and the upper cover (10) covers the opening of the recess (21) to form a tobacco sheet (4) for accommodating the tobacco sheet (4). a first receiving cavity (26) having a flat cross section, and the heating member (30) is closely attached to the bottom wall (210) at the first capacity On the surface outside the cavity (26), the temperature sensing member (50) is fixedly attached to the heating member (30) and electrically connected to the control board (40), and the heating control method includes : S1 The temperature sensing member (50) detects the heating temperature of the heating member (30), and converts the heating temperature into a temperature signal of a predetermined format, and sends the temperature signal to the control panel (40); S2 The control board (40) receives the temperature signal sent by the temperature sensing component (30), and compares the temperature signal with a set temperature stored in the control board (40); The set temperature is a temperature value set by the user according to the taste requirement; S3 The control panel (40) determines whether the difference between the temperature signal and the set temperature is within a predetermined range, and if so, then proceeds to step S1, and if not, then proceeds to step S4; S4 The control board (40) adjusts the heating power of the heating element (30) according to the determination result of step S3, thereby adjusting the heating temperature of the heating element (30); In step S4, when the determination result is that the heating temperature represented by the temperature signal is higher than the set temperature, the heating power of the heating member (30) is lowered; when the judgment result is that the heating temperature represented by the temperature signal is low At the set temperature, the heating power of the heating element (30) is raised.