RU2793875C1 - Smoking device for heating tobacco without its combustion and method of temperature control - Google Patents

Abstract

FIELD: tobacco heating device.

SUBSTANCE: group of inventions relates to a temperature control method for a device for heating tobacco without burning it and a device for heating tobacco without burning it. The method includes adjusting the temperature of the smoking material to maintain it at the second temperature threshold, adjusting the temperature of the smoking material to increase it from the second temperature threshold to the third temperature threshold, adjusting the temperature of the smoking material to maintain it at the third temperature threshold, and stopping the heating of the smoking material after a given period of time. The second temperature threshold is designated as T2, the third temperature threshold is designated as T3, and T2<T3. The time interval for regulating the temperature of the smoking material, ensuring its maintenance at the second temperature threshold in the process, is designated as T3, and 30 s≤T3≤300 s. The time interval for controlling the temperature of the smoking material, which ensures its increase from the second temperature threshold to the third temperature threshold, is designated as t4, and 15 s≤t4≤180 s. The time interval for controlling the temperature of the smoking material to maintain it at the third temperature threshold is designated as t5, and 10 s≤t5≤120 s.

EFFECT: prevention of heating of the tobacco heating device without its combustion during the smoking process. An appropriate amount of smoke is generated at a later stage of smoking.

11 cl, 4 dwg

Description

field of technology to which the invention belongs

The present invention relates to the field of tobacco smoking devices, and in particular to a smoking article for heating tobacco without burning it, and to a temperature control method.

prerequisites for the creation of the invention

Devices with the function of "heating tobacco without burning it" are gradually attracting public attention. Finding ways to optimize the heating process to improve the user's smoking experience has become a major concern of those skilled in the art.

summary of the invention

The present invention is to provide a device for heating tobacco without burning it and a method for controlling the temperature, taking into account the shortcomings of the prior art.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a temperature control method for a device with a “heating tobacco without burning tobacco” function, including: controlling the temperature of the smoking material to maintain it at a second temperature threshold; adjusting the temperature of the smoking material from the second temperature threshold to the third temperature threshold; adjusting the temperature of the smoking material to maintain it at the third temperature threshold and stopping the heating of the smoking material after a predetermined period of time; wherein the second temperature threshold is designated as T2, the third temperature threshold is designated as T3, and T2<T3.

In one embodiment of the present invention, prior to adjusting the temperature of the smoking material to maintain it at a second temperature threshold, the method further comprises: adjusting the temperature of the smoking material to the first temperature threshold; adjusting the temperature of the smoking material to maintain it between the first temperature threshold and the second temperature threshold; and finally, lowering the temperature to a second temperature threshold; wherein the first temperature threshold is designated as T1, and T2<T1.

In one embodiment of the present invention, controlling the temperature of the smoking material comprises maintaining it between a first temperature threshold and a second temperature threshold; and finally, lowering to the second temperature threshold includes:

adjusting the temperature of the smoking material to continuously lower it to a second temperature threshold; or adjusting the temperature of the smoking material to gradually decrease it to a second temperature threshold.

In one embodiment of the present invention, the temperature of the smokable material is controlled to reduce it in stages: turning off the heating element to cool the smokable material and turning on the heating element to maintain a constant temperature of the smokable material.

In one embodiment, 300°C≤T1≤380°C.

In one embodiment, the time interval is denoted as t2, and 1s≤t2≤45s, during which the temperature control of the smoking material is maintained between the first temperature threshold and the second temperature threshold; and, finally, there is a decrease to the second temperature threshold during the heating process.

In one embodiment of the present invention, the time interval for adjusting the temperature of the smoking material to the first temperature threshold during the heating process is denoted as t1, and 5s≤t1≤25s.

In an embodiment of the present invention, controlling the temperature of the smoking material from the second temperature threshold to the third temperature threshold includes:

adjusting the continuous heating of the smoking material to a third temperature threshold; or adjusting the stepwise heating of the smoking material to a third temperature threshold.

In one embodiment, 150°C≤T2≤350°C.

In one embodiment, 200°C≤T3≤380°C.

In one embodiment, the time interval for adjusting the temperature of the smoking material to maintain it at the second temperature threshold during the heating process is denoted as t3, and 30s≤t3≤300s.

In one embodiment, the time interval for adjusting the temperature of the smoking material to maintain it at the third temperature threshold during the heating process is denoted as t4, and 15s≤t4≤180s.

In one embodiment, the time interval for adjusting the temperature of the smoking material to maintain it at the third temperature threshold during the heating process is denoted as t5, and 10s≤t5≤120s.

To solve the above problem, the present invention adopted the following technical solution: a device for heating tobacco without burning it, including a heating element and a control element; wherein the heating element is designed to heat the material for smoking, the control element further includes a memory and a processor; instructions are stored in the memory, the processor executes instructions to implement the temperature control method

Compared with the prior art, the advantages of the present invention are that, in the middle of using the device, the temperature of the smoking material is kept relatively stable and relatively low so that sufficient smoke is generated without burning the hands or mouth. At the end of the process of using the device, due to the fact that the smoking material contains a small amount of active components, it is necessary to gradually increase the temperature of the smoking material to ensure that a sufficient amount of smoke is generated. Of course, the temperature of the smoking material cannot be increased indefinitely. Firstly, the temperature level is limited by the heat output of the device for heating tobacco without burning it, and secondly, the limitation avoids burning the mouth and hands from the device for heating tobacco without burning it, as a result of which the temperature of the smoking material is maintained at a higher temperature. third temperature threshold for a certain period of time. When the active components in the smoking material are almost completely consumed, the heating process is completed and the temperature of the smoking material decreases rapidly.

brief description of the DRAWINGS

FIG. 1 is a block diagram illustrating a temperature control method in accordance with one embodiment of the present invention.

FIG. 2 is a graph of a temperature curve illustrating a temperature control method in accordance with one embodiment of the present invention.

FIG. 3 is a temperature curve graph illustrating a temperature control method according to another embodiment of the present invention.

FIG. 4 is a block diagram illustrating the structure of an apparatus for heating tobacco without burning it, in accordance with an embodiment of the present invention.

1 - heat measuring element; 2 - heating element; 3 – control element; 31 - memory; 32 - processor.

DESCRIPTION OF EMBODIMENTS OF THE PRESENT INVENTION

In the context of the present invention, it should be understood that terms such as "comprise" or "have" are intended to indicate the presence of the features, numbers, steps, acts, components, parts, or combinations thereof disclosed in the description of the invention, and are not intended to exclude one or more other existing features, numbers, steps, actions, components, parts, or combinations thereof.

In addition, it should be noted that the embodiments of the present invention and the features of the embodiments can be combined with each other without conflict. The present invention is described in detail below with reference to the accompanying drawings and in conjunction with embodiments of the present invention.

The present invention is described in more detail below with reference to the embodiments illustrated in the accompanying drawings.

As shown in FIG. 1 in combination with FIG. 2 and FIG. 3, the temperature control method for the non-burning tobacco heating device provided by the embodiments of the present invention includes the following steps.

In a third step (referred to as step c), the temperature of the smoking material is adjusted to maintain it at a second temperature threshold.

In a fourth step (referred to as step d), the temperature of the smoking material is adjusted to increase from the second temperature threshold to the third temperature threshold.

In the fifth step (denoted as step e), the temperature of the smoking material is maintained at the third temperature threshold, and heating of the smoking material is completed after a predetermined period of time. Here, the second temperature threshold is designated as T2, the third temperature threshold is designated as T3, and T2<T3.

In other words, when using the device for heating tobacco without burning it, in the middle of the heating process, the temperature of the smoking material is kept relatively stable and relatively low, so that sufficient smoke can be generated without burning hands or mouth. At the end of the use process, due to the fact that a small amount of active components remain in the smoking material, it is necessary to gradually increase the temperature of the smoking material to ensure that a sufficient amount of smoke is generated. Of course, the temperature of the smoking material cannot be increased indefinitely. Firstly, the temperature level is limited by the heat output of the device for heating tobacco without burning it, and secondly, the limitation avoids burning the mouth and hands from the device for heating tobacco without burning it, as a result of which the temperature of the smoking material is maintained at a higher temperature. third temperature threshold for a certain period of time. When the active components in the smoking material are almost completely consumed, the heating process is completed and the temperature of the smoking material decreases rapidly.

The above is an optimized design for middle and end use devices for heating tobacco without burning it. An embodiment of the present invention also provides an optimized design for the complete process of using a device for heating tobacco without burning it.

As shown in FIG. 1, an embodiment of the present invention provides a method for controlling the temperature of a tobacco heating device without burning it, comprising the following steps. See FIG. 2 and 3 to understand the principle of temperature change at each stage.

In a first step (step a), the temperature of the smoking material is adjusted to reach a first temperature threshold.

In a second step (step b), the temperature of the smoking material is adjusted to maintain it between the first temperature threshold and the second temperature threshold and eventually to decrease to the second temperature threshold.

In a third step (step c), the temperature of the smoking material is adjusted to maintain it at the second temperature threshold.

In a fourth step (step d), the temperature of the smoking material is adjusted to increase from the second temperature threshold to the third temperature threshold.

In the fifth step (step e), the temperature of the smoking material is adjusted to maintain it at the third temperature threshold, and the heating process ends after a predetermined time.

The first temperature threshold is designated as T1, the second temperature threshold is designated as T2, and the third temperature threshold is designated as T3, with T2<T1 and T2<T3.

The third stage is the middle of the process during which the smoking material emits smoke and the temperature of the smoking material can be kept relatively stable. In the initial stage of smoke release by the smoking material, ie in the second stage, the overall average temperature of the smoking material is higher than in the third stage. Thus, it can be ensured that the user can quickly inhale a sufficient amount of smoke at the initial stage of using the device for heating tobacco without burning it. In addition, in the third step, the temperature of the smoking material is relatively low, which avoids the problem that the temperature of the outer casing of the non-burning tobacco heating apparatus is too high due to heat conduction, thereby causing hand burn. Finally, in the fourth step and the fifth step, the temperature of the smokable material is higher than in the third step—assuming an exceptionally small amount of the active component of the smokable material remains—as a result of which a relatively still sufficient amount of smoke is produced for the user to improve it. sensations when smoking.

It should be noted that since it is difficult to maintain an accurate constant temperature of the smoking material, maintaining the temperature of the smoking material at a particular level as described above is equivalent to maintaining the temperature of the smoking material within a small range of fluctuations within that particular temperature.

Alternatively, as shown in FIG. 2, in a second step (ie step b), the smoking material is continuously cooled to a second temperature threshold. Of course, if it is necessary to set a longer time interval for the second stage, the cooling rate can be relatively low.

Alternatively, as shown in FIG. 3, in a second step (ie step b), the smoking material is cooled step by step to a second temperature threshold. In other words, the temperature of the smoking material first decreases for a short period, then remains unchanged, then decreases for a short period, and so on. Thus, it is possible to prevent the temperature of the smoking material from dropping too quickly and the heating power to be inaccurately controlled, resulting in the temperature of the smoking material being significantly below the second temperature threshold.

Specifically, adjusting the temperature of the smoking material to gradually lower it includes turning off the heating element to cool the smoking material and turning on the heating element to maintain the temperature of the smoking material unchanged. In other words, the heating element is switched off and on alternately in such a way that the temperature of the smoking material is stepped down. The control of the heating element is simplified and the temperature control becomes more accurate.

In order to increase the overall average temperature of the second stage above the second temperature threshold, and at the same time to provide more precise control of the smoking material temperature, the temperature of the smoking material in the second stage can also be controlled as follows.

For example, in the second step, the temperature of the smoking material is controlled so that it first fluctuates between the second temperature threshold and the first temperature threshold, and then decreases to the second temperature threshold.

For example, in the second step, the temperature of the smoking material is controlled to fall to the second temperature threshold after the first temperature threshold step has been completed for a predetermined time.

Alternatively, as shown in FIG. 2, in the fourth step (ie step d), the smoking material is continuously heated up to the third temperature threshold. Alternatively, as shown in FIG. 3, in the fourth step, the smoking material is heated stepwise to a third temperature threshold.

Similarly, the step heating method provides precise control of the temperature of the smoking material. The constant heating method is relatively easy to implement. In general, it is easier to control the time interval of a constant temperature of the smoking material than it is to control the heating rate of the smoking material. In addition, the stage heating method can also maximize the use of the active components of the smoking material (such as smoke generators) in the last part of the heating process in order to prevent the rapid formation of smoke, which leads to an uneven volume of smoke.

Optionally 300°C≤T1≤380°C. Within this temperature range, conventional smoking materials are capable of generating a sufficient amount of smoke during the initial heating stage.

Optionally 150°C≤T2≤350°C. Within this temperature range, conventional smoking materials are able to continue to generate an adequate amount of smoke in the middle of the heating process, and the body of the tobacco heating device without burning tobacco will not burn hands.

Optionally 200°C≤T3≤380°C. Within this temperature range, conventional smoking materials are able to continue to generate a sufficient amount of smoke in a later stage of heating.

Alternatively, the time interval of the first stage is denoted as t1, and 5s≤t1≤25s.

Alternatively, the time interval of the second stage is denoted as t2, and 1s≤t2≤45s.

Alternatively, the time interval of the third segment is denoted as t3, and 30s≤t3≤300s.

Alternatively, the time interval of the fourth step is indicated as t4, and 15s≤t4≤180s.

Alternatively, the time interval of the fifth step is denoted as t5, and 10s≤t5≤120s.

The time interval of the first stage should be relatively short. Even if the smoking material is rapidly heated, it cannot be infinitely fast due to the power consumption limitation of the tobacco heating device without burning tobacco and precise temperature control.

The time interval of the second stage depends on the characteristics of the device itself for heating tobacco without burning it and the characteristics of the material for smoking. As long as the smoking material quickly generates sufficient smoke, the body of the tobacco heating device without burning tobacco does not heat up and burns the hands.

The third stage should last a longer time, i.e. The material for smoking provides a constant supply of the required amount of smoke.

The time interval of the fourth stage depends on the characteristics of the smoking material. Although a small amount of the active components of the smokable material remains at this stage, the temperature rise required is not large.

The time interval of the fifth step depends on the characteristics of the smokable material, and the purpose of this step is to consume the last small amount of active components of the smokable material as quickly as possible to ensure that there is no significant reduction in smoke generation in the last step.

It should be noted that there is no necessary relationship between the above first temperature threshold and the second temperature threshold. These threshold values are set in accordance with the characteristics of the smoking material and the device for heating tobacco without burning it, respectively.

As shown in FIG. 4, based on a similar idea of the invention, an embodiment of the present invention provides for a device for heating tobacco without burning it, including: a heat sensing element 1, a heating element 2 and a control element 3. The heat sensing element 1 is designed to measure the temperature of the material for smoking, and the heating element 2 designed to heat material for smoking. The control element 3 includes a memory 31 and a processor 32, the memory 31 stores instructions, and the processor 32 executes the instructions to implement the above-described temperature control method.

The heat sensing element 1 includes, for example, a thermocouple, a thermistor, a thermistor, an infrared sensor, and the like. The heating element 2 includes, for example, a resistance heater, an infrared heater, and the like. The memory 31 specifically includes magnetic disk memory, CD-ROM, optical memory, read only memory (ROM) or flash memory (flash RAM), etc. The processor 32 is, for example, a central processing unit (CPU), a microcontroller (MCU), and so on. Of course, the memory 31 and the processor 32 can also be combined into one element.

The control element 3 may adjust the heating power of the heating element 2 in accordance with the real-time temperature and the expected temperature of the smoking material, for example, to control the temperature of the smoking material. Of course, the control element 2 can also adjust the heating power of the heating element in accordance with the predetermined heating program to realize the above temperature curve.

Each embodiment of the present invention is described sequentially, and the same and similar parts between the various embodiments can be related to each other, and in each embodiment, particular emphasis is placed on differences from other embodiments.

The protection scope of the present invention is not limited to the above embodiments. It is obvious that specialists in the art can make various changes and additions to the present invention, without going beyond the scope and essence of the present invention. If these changes and additions fall within the scope of the claims of the present invention and its equivalent technologies, then the purpose of the present invention also includes these changes and additions.

Claims (11)

1. A temperature control method for a device for heating tobacco without burning it, including controlling the temperature of the smoking material to maintain it at a second temperature threshold, controlling the temperature of the smoking material to increase it from the second temperature threshold to the third temperature threshold, controlling the temperature of the smoking material to maintain it at the third temperature threshold and stop heating the smoking material after a predetermined period of time, characterized in that the second temperature threshold is designated as T2, the third temperature threshold is designated as T3, while T2<T3, and the time interval for regulating the temperature of the smoking material , ensuring its maintenance at the second temperature threshold in the process, is designated as t3, while 30 s ≤ t3 ≤ 300 s, the time interval for controlling the temperature of the smoking material, ensuring its increase from the second temperature threshold to the third temperature threshold, is designated as t4, with 15 s ≤ t4 ≤ 180 s, the time interval for adjusting the temperature of the smoking material to maintain it at the third temperature threshold is indicated as t5, while 10 s ≤ t5 ≤ 120 s. 2. The method according to claim 1, characterized in that, before adjusting the temperature of the smoking material to maintain it at the second temperature threshold, the method further comprises adjusting the temperature of the smoking material to maintain it between the first temperature threshold and the second temperature threshold, and finally lowering to a second temperature threshold, wherein the first temperature threshold is designated as T1, with T2<T1. 3. The method according to claim 2, characterized in that the temperature of the smoking material is controlled in such a way that it is maintained between the first temperature threshold and the second temperature threshold and, finally, lowering to the second temperature threshold, including adjusting the temperature of the smoking material in order to lowering it continuously to the second temperature threshold, or adjusting the temperature of the smoking material to step down to the second temperature threshold. 4. The method according to claim 3, wherein controlling the temperature of the smoking material to step down the temperature comprises turning off the heating element to cool the smoking material and turning on the heating element to maintain a constant temperature of the smoking material. 5. The method according to p. 2, characterized in that 300°C≤T1≤380°C. 6. The method according to claim 2, characterized in that the time interval for controlling the temperature of the smoking material, ensuring its maintenance between the first temperature threshold and the second temperature threshold and the final decrease to the second temperature threshold in the process, is designated as t2, while 1 s ≤ t2≤45 s. 7. The method according to claim 2, characterized in that the time interval for adjusting the temperature of the smoking material to the first temperature threshold in the process is designated as t1, while 5 s ≤ t1 ≤ 25 s. 8. The method according to claim 1, characterized in that adjusting the temperature of the smoking material from the second temperature threshold to the third temperature threshold comprises adjusting the temperature of the smoking material for continuous heating to a third temperature threshold or adjusting the temperature of the smoking material for step heating to a third temperature threshold. threshold. 9. The method according to p. 1, characterized in that 150°C≤T2≤350°C. 10. The method according to p. 1, characterized in that 200°C≤T3≤380°C. 11. A device for heating tobacco without burning it, including a heating element and a control element, while the heating element is designed to heat the material for smoking, the control element additionally includes a memory and a processor, commands are stored in the memory, the processor executes commands for implementing the temperature control method according to any of paragraphs. 1-10.

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