阅读说明：本技术 一种防止过度加热的控制方法、装置及电加热烟具 (Control method and device for preventing overheating and electric heating smoking set ) 是由 蔡吉俊 张慧 黄运东 谢涛 陈嘉彬 于 2021-09-10 设计创作，主要内容包括：本发明提供一种防止过度加热的控制方法、装置及电加热烟具,所述控制方法包括：对电加热烟具的运行阶段和加热温度进行监控；当监控到所述电加热烟具进入预热阶段后,记录所述预热阶段的第一持续时间；当监控到所述加热温度达到第一温度后,记录自所述第一温度开始的第二持续时间；当所述第一持续时间或所述第二持续时间满足预设条件时,控制所述电加热烟具结束所述预热阶段。本发明提供的防止过度加热的控制方法,通过设置双重结束预热阶段的触发条件,能够避免对气溶胶发生基质的过度加热,避免烟气过烫,提升用户的抽吸体验,并且还能够保证加热过程中热量的均衡输出,减少有害物质的产生,从而保护用户的身体健康。(The invention provides a control method and a control device for preventing overheating and an electric heating smoking set, wherein the control method comprises the following steps: monitoring the operation stage and the heating temperature of the electric heating smoking set; when the electric heating smoking set is monitored to enter a preheating stage, recording the first duration time of the preheating stage; recording a second duration from the first temperature after monitoring that the heating temperature reaches the first temperature; and when the first duration time or the second duration time meets a preset condition, controlling the electric heating smoking set to end the preheating stage. According to the control method for preventing overheating, provided by the invention, the triggering condition for ending the preheating stage in double ways is set, so that overheating of aerosol generating substrates can be avoided, smoke can be prevented from being excessively hot, the smoking experience of a user is improved, the balanced output of heat in the heating process can be ensured, the generation of harmful substances is reduced, and the body health of the user is protected.)

1. A control method for preventing overheating, comprising:

monitoring the operation stage and the heating temperature of the electric heating smoking set;

when the electric heating smoking set is monitored to enter a preheating stage, recording the first duration time of the preheating stage;

recording a second duration from the first temperature after monitoring that the heating temperature reaches the first temperature;

and when the first duration time or the second duration time meets a preset condition, controlling the electric heating smoking set to end the preheating stage.

2. The method of claim 1, wherein controlling the electrically heated smoking article to end the preheating phase when the first duration or the second duration satisfies a preset condition comprises:

judging whether the first duration is greater than a first preset threshold value or not;

judging whether the second duration is greater than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold;

and when the first duration is greater than a first preset threshold or the second duration is greater than a second preset threshold, controlling the electric heating smoking set to end the preheating stage.

3. The method of claim 1, further comprising:

after the preheating stage is finished, the heating element is controlled to be lowered from the first temperature to the second temperature, and a constant temperature stage is entered.

4. The method of claim 1, further comprising:

when a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage;

in the pre-heating phase, the heating element is controlled to increase from an initial temperature to the first temperature.

5. The method of claim 4, wherein the controlling the electrically heated smoking article to enter a preheating phase upon receiving a start command comprises:

when a starting instruction is received, acquiring the initial temperature of the heating element;

calculating a temperature rise time according to the initial temperature and the first temperature;

and when the temperature rise time is greater than or equal to a third preset threshold value, controlling the electric heating smoking set to enter a preheating stage.

6. The method of claim 5, further comprising:

when the temperature rise time is less than a third preset threshold value, controlling the electric heating smoking set to enter a protection mode;

recording a third duration of the protection mode;

and when the third duration reaches a fourth preset threshold, controlling the electric heating smoking set to enter a preheating stage.

7. The method of claim 3, further comprising:

when the constant temperature stage is monitored to be finished, starting delay timing waiting for cooling;

in the time delay timing process, if a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage in a normal heating mode when the timing duration of the time delay timing reaches a fifth preset threshold;

alternatively, the first and second electrodes may be,

and in the time delay timing process, if a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage in a low-power-consumption heating mode.

8. A control device for preventing overheating, comprising:

the monitoring module is used for monitoring the operation stage and the heating temperature of the electric heating smoking set;

the first timing module is used for recording the first duration time of the preheating stage after the electric heating smoking set is monitored to enter the preheating stage;

the second timing module is used for recording a second duration time from the first temperature after the heating temperature reaches the first temperature;

and the control module is used for controlling the electric heating smoking set to end the preheating stage when the first duration time or the second duration time meets a preset condition.

9. The apparatus of claim 8, wherein the control module comprises:

the judging unit is used for judging whether the first duration is greater than a first preset threshold value or not; judging whether the second duration is greater than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold;

and the control unit is used for controlling the electric heating smoking set to end the preheating stage when the first duration is greater than a first preset threshold or the second duration is greater than a second preset threshold.

10. An electrically heated smoking article comprising a control device for preventing overheating according to claim 8 or 9.

Technical Field

The invention relates to the technical field of electric heating smoking set, in particular to a control method and device for preventing overheating and an electric heating smoking set.

Background

In recent years, with the growing concern of people on health, people are aware that traditional cigarettes have certain harm to health, and the problem of influence of traditional cigarettes on health and environment is gradually paid attention to by countries all over the world. Tobacco producers are all striving to provide less harmful tobacco products to consumers, and in recent years, heated non-burning cigarettes have become increasingly popular with the market as a new form of tobacco consumption, and are increasingly being accepted by cigarette consumers in most countries.

The aerosol generating substrate is heated to release the aerosol by heating the non-burning cigarette, so that a user can obtain smoking experience. Because the tobacco shreds are not combusted, complex chemical reaction is not generated, harmful substances such as tar and carbon monoxide brought by the traditional cigarette are reduced, and the inhalation of the harmful substances is reduced while the user obtains experience.

At present, the heating control method for electrically heating smoking set, especially for heating non-burning smoking set, is mainly to set preheating time and maximum preheating temperature, and after the system is started and enters the preheating stage, the heating element is controlled to be heated to the maximum preheating temperature, and the maximum preheating temperature is maintained until the preheating time is over, and then the system enters the constant temperature stage and continues until the heating process is over. However, because after the primary heating process is completed, the heating element can be kept at a temperature state higher than the normal temperature, so that when the device is continuously used, the initial temperature of the preheating stage is higher than the normal temperature, the time point of reaching the highest preheating temperature can be advanced, and then the aerosol generating substrate can be subjected to transition heating, so that the smoke is excessively hot, the suction experience of a user is influenced, harmful substances can be increased seriously, and the health of the user is harmed.

Disclosure of Invention

In view of the above problems in the prior art, an object of the present invention is to provide a control method and device for preventing overheating and an electrical heating smoking set, which can avoid overheating of aerosol generating substrates, avoid over-burning of smoke, and improve the smoking experience of users.

In order to solve the above problems, the present invention provides a control method for preventing overheating, including:

monitoring the operation stage and the heating temperature of the electric heating smoking set;

when the electric heating smoking set is monitored to enter a preheating stage, recording the first duration time of the preheating stage;

recording a second duration from the first temperature after monitoring that the heating temperature reaches the first temperature;

and when the first duration time or the second duration time meets a preset condition, controlling the electric heating smoking set to end the preheating stage.

Further, the controlling the electrically heated smoking article to end the preheating phase when the first duration or the second duration satisfies a preset condition comprises:

judging whether the first duration is greater than a first preset threshold value or not;

judging whether the second duration is greater than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold;

and when the first duration is greater than a first preset threshold or the second duration is greater than a second preset threshold, controlling the electric heating smoking set to end the preheating stage.

Further, the method further comprises:

after the preheating stage is finished, the heating element is controlled to be lowered from the first temperature to the second temperature, and a constant temperature stage is entered.

Further, the method further comprises:

when a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage;

in the pre-heating phase, the heating element is controlled to increase from an initial temperature to the first temperature.

Further, when receiving a start instruction, controlling the electric heating smoking set to enter a preheating stage comprises:

when a starting instruction is received, acquiring the initial temperature of the heating element;

calculating a temperature rise time according to the initial temperature and the first temperature;

and when the temperature rise time is greater than or equal to a third preset threshold value, controlling the electric heating smoking set to enter a preheating stage.

Further, the method further comprises:

when the temperature rise time is less than a third preset threshold value, controlling the electric heating smoking set to enter a protection mode;

recording a third duration of the protection mode;

and when the third duration reaches a fourth preset threshold, controlling the electric heating smoking set to enter a preheating stage.

Further, the method further comprises:

when the constant temperature stage is monitored to be finished, starting delay timing waiting for cooling;

in the time delay timing process, if a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage in a normal heating mode when the timing duration of the time delay timing reaches a fifth preset threshold;

alternatively, the first and second electrodes may be,

and in the time delay timing process, if a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage in a low-power-consumption heating mode.

Another aspect of the present invention provides a control apparatus for preventing overheating, including:

the monitoring module is used for monitoring the operation stage and the heating temperature of the electric heating smoking set;

the first timing module is used for recording the first duration time of the preheating stage after the electric heating smoking set is monitored to enter the preheating stage;

the second timing module is used for recording a second duration time from the first temperature after the heating temperature reaches the first temperature;

and the control module is used for controlling the electric heating smoking set to end the preheating stage when the first duration time or the second duration time meets a preset condition.

Specifically, the control module includes:

the judging unit is used for judging whether the first duration is greater than a first preset threshold value or not; judging whether the second duration is greater than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold;

and the control unit is used for controlling the electric heating smoking set to end the preheating stage when the first duration is greater than a first preset threshold or the second duration is greater than a second preset threshold.

Another aspect of the invention provides an electrically heated smoking article comprising a control device as described above to prevent overheating.

Due to the technical scheme, the invention has the following beneficial effects:

according to the control method for preventing overheating provided by the embodiment of the invention, the first duration of the preheating stage and the second duration after the first temperature (highest temperature) is reached are respectively recorded, when the first duration or the second duration meets the preset condition, the preheating stage is ended, overheating of aerosol generation substrates can be avoided, over-burning of smoke is avoided, the smoking experience of a user is improved, and in addition, the mode of setting the trigger condition for doubly ending the preheating stage can also ensure balanced output of heat in the heating process, the generation of harmful substances is reduced, and the body health of the user is protected.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a flow chart of a control method for preventing overheating provided by one embodiment of the present invention;

FIG. 2 is a schematic diagram of a temperature control curve for a heating process provided by one embodiment of the present invention;

FIG. 3 is a schematic diagram comparing time periods of different heating processes provided by one embodiment of the present invention;

fig. 4 is a schematic structural diagram of a control device for preventing overheating according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

Referring to the specification, fig. 1 illustrates a flow chart of a control method for preventing overheating according to an embodiment of the present invention, and as shown in fig. 1, the method may include the following steps:

s110: the operating phase and heating temperature of the electrically heated smoking article are monitored.

In the embodiment of the invention, in the operation process of the electric heating smoking set, the operation stage and the heating temperature of the electric heating smoking set can be monitored in real time, for example, the heating temperature of the electric heating smoking set can be obtained in real time through a temperature sensor. Referring to fig. 2 in conjunction with the description, the one-time complete operation process of the electrically heated smoking article may include a preheating stage and a constant temperature stage, wherein the preheating stage may include a process of increasing the temperature of the heating element from an initial temperature to a first temperature, and may also include a process of maintaining the operation within a first temperature range around the first temperature after the first temperature is reached, and the constant temperature stage may include a process of decreasing the temperature of the heating element from the first temperature to a second temperature and maintaining the operation within a second temperature range around the second temperature until the operation process is finished. The first temperature range and the second temperature range may be set according to actual needs, for example, the first temperature range may be set to be a temperature range of ± 5 degrees celsius of the first temperature, and the second temperature range may be set to be a temperature range of ± 5 degrees celsius of the second temperature, which is not limited in this embodiment of the present invention.

In one possible embodiment, the method may further comprise the step of controlling the operation of the electrically heated smoking article. Specifically, the method may further include:

when a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage;

in the pre-heating phase, the heating element is controlled to increase from an initial temperature to the first temperature.

The starting instruction may be a starting instruction sent by a user, and when the starting instruction is received, the electric heating smoking set may be controlled to enter a preheating stage in a normal heating mode, and in the normal heating mode, the heating element may be controlled to heat up with a first power, and the first power may be set according to actual needs, which is not limited in the embodiment of the present invention.

When the heat engine is started (namely, continuously used), the heating element is not cooled to the normal temperature, and the initial temperature can be higher than the normal temperature. The first temperature may be a preset maximum temperature, and the first temperature is higher than the initial temperature, and the first temperature may be set according to actual needs, which is not limited in this embodiment of the present invention. Through setting up the highest temperature, utilize the highest temperature to the electrical heating smoking set preheats, can shorten the time of preheating the process to quick response user's suction demand promotes the suction and experiences.

Further, the controlling the electrically heated smoking set to enter the preheating phase when the start instruction is received may include:

when a starting instruction is received, acquiring the initial temperature of the heating element;

calculating a temperature rise time according to the initial temperature and the first temperature;

and when the temperature rise time is greater than or equal to a third preset threshold value, controlling the electric heating smoking set to enter a preheating stage.

Further, the method may further include:

when the temperature rise time is less than a third preset threshold value, controlling the electric heating smoking set to enter a protection mode;

recording a third duration of the protection mode;

and when the third duration reaches a fourth preset threshold, controlling the electric heating smoking set to enter a preheating stage.

Specifically, after receiving a start instruction of a user, a temperature rise time required for rising from an initial temperature to a first temperature may be calculated according to the initial temperature, a preset first temperature, and a first power corresponding to a normal heating mode, if the temperature rise time is too short (i.e., smaller than a third preset threshold), a protection mode is started, in the protection mode, heating is not started temporarily, heating is started again after the protection mode is ended (i.e., the duration of the protection mode reaches a fourth preset threshold), and if the temperature rise time is greater than or equal to the third preset threshold, heating may be started directly. The third preset threshold and the fourth preset threshold may be set according to actual needs, which is not limited in this embodiment of the present invention. Through setting up the protection mode, can be right the electrical heating smoking set carries out better protection, increases the life of electrical heating smoking set.

S120: and recording the first duration of the preheating stage after monitoring that the electric heating smoking set enters the preheating stage.

S130: when it is monitored that the heating temperature reaches a first temperature, recording a second duration from the first temperature.

In an embodiment of the present invention, a first duration since entering the preheating phase and a second duration since the first temperature may be recorded by a timer.

S140: and when the first duration time or the second duration time meets a preset condition, controlling the electric heating smoking set to end the preheating stage.

In practical application, the preheating stage of the electric heating smoking set comprises a temperature rising stage and a high temperature maintaining stage, and the starting state of the electric heating smoking set comprises cold machine starting and hot machine starting. As shown in fig. 3, at the time of cold start, it is assumed that the temperature rise period is T1, i.e., the temperature of the heat generating element is raised from the normal temperature to the first temperature (i.e., the highest temperature set in the warm-up phase) in the T1 period, and is maintained in the first temperature range around the first temperature to the end of the T2 period, i.e., the high temperature period is maintained at T2. At the time of starting the heat engine, since the heat generating element has not been cooled to the normal temperature, assuming that it takes time T10 to raise the temperature of the heat generating element from the normal temperature to the first temperature at this time, T10< T1 due to the influence of the residual heat. In the starting process of the cold machine, the preheating heat is as follows: the accumulated heat output in the time period of T1+ T2 is as follows: residual heat + T10+ T20 time period integrated heat output. It can be seen that during warm engine start-up, the amount of warm-up heat would be more than that of the cold start-up process if it were also calculated as per time T2. During this process, the aerosol generating substrate may be overheated, resulting in excessive smoke burn and, in severe cases, increased hazardous material production.

In order to avoid excessive heat output in the preheating stage, in the embodiment of the present invention, two triggering conditions for ending the preheating stage may be set, and when any one of the triggering conditions is satisfied, the electric heating smoking set may be controlled to end the preheating stage.

Specifically, in the step S140, the controlling the electrically heated smoking set to end the preheating phase when the first duration or the second duration satisfies a preset condition may include:

judging whether the first duration is greater than a first preset threshold value or not;

judging whether the second duration is greater than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold;

and when the first duration is greater than a first preset threshold or the second duration is greater than a second preset threshold, controlling the electric heating smoking set to end the preheating stage.

In this embodiment of the present invention, a first trigger condition for ending the preheating stage is that a duration of the preheating stage is greater than a first preset threshold, where the first preset threshold may be greater than the temperature rise time calculated according to the initial temperature and the first temperature, and the first preset threshold may be set according to actual needs, which is not limited in this embodiment of the present invention.

In this embodiment of the present invention, the second trigger condition for ending the preheating stage is that a duration after the first temperature (i.e., the highest temperature) is reached is greater than a second preset threshold, where the second preset threshold is smaller than the first preset threshold, and the second preset threshold may be set according to actual needs, which is not limited in this embodiment of the present invention.

In one possible embodiment, the second preset threshold may be set such that when the second trigger condition is satisfied at the start of a different initial temperature, the cumulative output heat of the whole preheating stage is greater than or equal to the cumulative output heat of the whole preheating stage when the first trigger condition is satisfied at the start of the normal temperature.

In a possible embodiment, different second preset thresholds may be set for different initial temperatures, so that the accumulated output heat of the whole preheating stage is the same when the different initial temperatures are started and the second trigger condition is met.

In the embodiment of the present invention, the method may further include:

after the preheating stage is finished, the heating element is controlled to be lowered from the first temperature to the second temperature, and a constant temperature stage is entered.

Wherein the second temperature is lower than the first temperature, and upon heating of the second temperature, the aerosol generating substrate can release an aerosol at a suitable temperature for a user to obtain a smoking experience and to reduce the production of hazardous substances.

The control method for preventing overheating provided by the embodiment of the present invention is described below by way of a specific embodiment. Assuming that the first temperature is set to 300 ℃, the first preset threshold is set to 20s, and the second preset time is set to 12s, i.e.

Triggering condition one: the duration of the preheating phase is 20 s.

Triggering condition two: after reaching the maximum temperature of 300 ℃, the temperature is continued for 12 s.

When the cold machine is started, the temperature of the heating element is supposed to be increased to 300 ℃ from normal temperature by 10s, then the heating element is kept to operate at 300 ℃, when the heating element continues for 10s after reaching the state of the maximum temperature of 300 ℃, the duration of the preheating phase reaches 20s, the triggering condition I is met, the preheating phase is ended, and then the constant temperature phase is started.

When the heat engine is started (i.e., continuously used), since the heating element is not yet cooled to normal temperature, the remaining temperature is assumed to be 100 ℃, and it is assumed that only 5 seconds are needed to raise the temperature of the heating element to 300 ℃ at this time, and then the heating element is kept operating at 300 ℃. At this point, if the determination is made only based on the trigger condition of the duration of the preheating phase, the heating element needs to be operated at 300 ℃ for 15s to satisfy the condition of the end of the preheating phase, so that the aerosol-generating substrate is heated at 300 ℃ for 15s, which is 50% longer than that in the cold start state. During this process, the aerosol generating substrate may be overheated, resulting in excessive smoke burn and, in severe cases, increased hazardous material production.

According to the control method for preventing overheating provided by the embodiment of the invention, when the heat engine is started (i.e. continuously used), when the heating element lasts for 12s after reaching the state of the maximum temperature of 300 ℃, the triggering condition II is met, the preheating phase is ended, and the constant temperature phase is started. In this process, the duration of the preheating phase is 17s, the first trigger condition is not reached, but the second trigger condition is satisfied, but it can be considered that the preheating phase provides enough heat to satisfy the condition of ending the preheating phase.

In some possible embodiments, the duration of the temperature rise period may be 0. When the heating element needs to be immediately started due to unexpected shutdown in the preheating stage, if the temperature of the heating element reaches the highest temperature during unexpected shutdown, the heating element can be quickly continuously heated during restarting, and the preheating is continuously performed by using the heating heat during the previous preheating, wherein the time length of the temperature rising time period is 0 at this time.

In summary, according to the control method for preventing overheating in the embodiment of the present invention, the first duration of the preheating phase and the second duration after the first temperature (the highest temperature) is reached are respectively recorded, and when the first duration or the second duration meets the preset condition, the preheating phase is ended, so that overheating of the aerosol generating substrate can be avoided, over-burning of smoke can be avoided, and the smoking experience of the user can be improved.

In one possible embodiment, the method may further include:

when the constant temperature stage is monitored to be finished, starting delay timing waiting for cooling;

in the time delay timing process, if a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage in a normal heating mode when the timing duration of the time delay timing reaches a fifth preset threshold;

alternatively, the first and second electrodes may be,

and in the time delay timing process, if a starting instruction is received, controlling the electric heating smoking set to enter a preheating stage in a low-power-consumption heating mode.

Specifically, when a closing instruction of a user is received or a complete running process is finished, the electric heating smoking set is controlled to finish the constant temperature stage.

Optionally, when the constant temperature phase is ended, a timer may be used for performing delay timing, if a start instruction of a user is received in the delay timing process, the system may be locked to perform forced cooling before the timing duration of the delay timing reaches a fifth preset threshold, and when the timing duration of the delay timing reaches the fifth preset threshold, the electric heating smoking set is controlled to enter the preheating phase in the normal heating mode. The fifth preset threshold may be set according to actual needs, which is not limited in this embodiment of the present invention.

Alternatively, when the constant temperature phase is over, a timer may be used for performing a delay time, and if a start instruction of a user is received during the delay time, the electric heating smoking set may be controlled to enter the preheating phase in the low power consumption heating mode. In the low-power heating mode, the heating element can be controlled to heat up at a second power, the second power is smaller than the first power, and the electric heating smoking set can be controlled to enter a preheating stage in the low-power heating mode, so that the electric heating smoking set can keep a heating trend and can ensure that the temperature is not too high. The second power may be set according to actual needs, which is not limited in this embodiment of the present invention.

Illustratively, after the constant temperature stage is finished, a timer can be used for carrying out time delay, and when the time is less than 5 seconds, if a user starts the electric heating smoking set, a low-power heating mode can be used for heating to prevent the temperature from being too high; or heating may not be started until the time reaches 5 seconds, and heating is carried out by using a normal heating mode.

By starting the time delay timing after the constant temperature stage is finished, the over-high temperature of the electric heating smoking set in the continuous use process can be avoided, so that the electric heating smoking set is protected, and the service life of the electric heating smoking set is prolonged.

Referring to the specification and to fig. 4, there is shown a structure of a control device 400 for preventing overheating according to an embodiment of the present invention. As shown in fig. 4, the apparatus 400 may include:

a monitoring module 410 for monitoring the operation stage and heating temperature of the electrically heated smoking set;

a first timing module 420, configured to record a first duration of the preheating phase after monitoring that the electrically heated smoking set enters the preheating phase;

a second timing module 430, configured to record a second duration from the first temperature after monitoring that the heating temperature reaches the first temperature;

a control module 440, configured to control the electric heating smoking set to end the preheating phase when the first duration or the second duration meets a preset condition.

As an example, the control device 400 may be configured as a chip, the first timing module 420 and the second timing module 430 may be implemented by a timer, a timing circuit, or the like, the monitoring module 410 may be implemented by a temperature sensor, and the control module 440 may be implemented by a control circuit, for example. That is, for example, after the temperature sensor detects that the electrically heated smoking set enters the preheating stage, the timing circuit is turned on to record the first duration, when the temperature sensor detects that the first temperature is reached, another timing circuit is started to record the second duration, and when the first duration or the second duration meets the preset condition, the control circuit is triggered to switch to end the preheating stage.

Further, the control module 440 may include:

the judging unit is used for judging whether the first duration is greater than a first preset threshold value or not; judging whether the second duration is greater than a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold;

and the control unit is used for controlling the electric heating smoking set to end the preheating stage when the first duration is greater than a first preset threshold or the second duration is greater than a second preset threshold.

Further, the control module 440 may be further configured to control the heating element to decrease from the first temperature to a second temperature after the preheating phase is ended, and enter a constant temperature phase. Specifically, the control module 440 may control the operation and stop of the heating element by controlling the switch of the circuit in which the heating element is located.

Further, the control module 440 may be further configured to control the electrical heating smoking set to enter a preheating stage when receiving a start instruction; in the pre-heating phase, the heating element is controlled to increase from an initial temperature to the first temperature.

In one possible embodiment, the apparatus 400 may further include:

the third timing module is used for starting delay timing of waiting for cooling when the constant temperature stage is monitored to be ended;

the control module 440 may be further configured to, in the delay timing process, when a start instruction is received, control the electric heating smoking set to enter a preheating stage in a normal heating mode when a timing duration of the delay timing reaches a fifth preset threshold;

alternatively, the first and second electrodes may be,

the control module 440 may be further configured to control the electric heating smoking set to enter the preheating stage in the low power consumption heating mode when receiving the start instruction during the delay timer.

Specifically, the control module 440 may control the electric heating smoking set to enter the preheating phase in different heating modes by controlling the switching device of the heating power adjusting device to generate two or more different heating powers.

An embodiment of the present invention further provides an electrical heating smoking set, where the electrical heating smoking set may include the control device for preventing overheating provided in the above embodiment, and specific content of the control device for preventing overheating may refer to content of the embodiment of the apparatus shown in fig. 4, and details of the embodiment of the present invention are not repeated herein.

It should be noted that in the accompanying drawings, some structural or methodical features may be shown in a particular arrangement and/or order. However, it is to be understood that such specific arrangement and/or ordering may not be required. Rather, in some embodiments, the features may be arranged in a manner and/or order different from that shown in the illustrative figures. In addition, the inclusion of a structural or methodical feature in a particular figure is not meant to imply that such feature is required in all embodiments, and in some embodiments, may not be included or may be combined with other features.

Each module/unit mentioned in each device embodiment of the present invention is a logical module/unit, and physically, one logical module/unit may be one physical module/unit, or may be a part of one physical module/unit, or may be implemented by a combination of multiple physical modules/units, and the physical implementation manner of these logical modules/units itself is not the most important, and the combination of functions implemented by these logical modules/units is the key to solve the technical problem proposed by the present invention. Furthermore, in order to highlight the innovative part of the present invention, the above-mentioned embodiments of the apparatus of the present invention do not introduce modules/units that are not so closely related to solve the technical problems proposed by the present invention, which does not indicate that there are no other modules/units in the above-mentioned embodiments of the apparatus.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.