CN114424843B - Induction heating method and device for smoking articles - Google Patents

Induction heating method and device for smoking articles Download PDF

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Publication number
CN114424843B
CN114424843B CN202210171472.8A CN202210171472A CN114424843B CN 114424843 B CN114424843 B CN 114424843B CN 202210171472 A CN202210171472 A CN 202210171472A CN 114424843 B CN114424843 B CN 114424843B
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China
Prior art keywords
induction coil
magnetic induction
cigarette
heat radiation
height
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CN114424843A (en
Inventor
谭健
刘华臣
黄婷
唐良颖
吴聪
蒋慧昀
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China Tobacco Hubei Industrial LLC
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China Tobacco Hubei Industrial LLC
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Priority to CN202210171472.8A priority Critical patent/CN114424843B/en
Publication of CN114424843A publication Critical patent/CN114424843A/en
Priority to PCT/CN2022/129459 priority patent/WO2023160006A1/en
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46Shape or structure of electric heating means
    • A24F40/465Shape or structure of electric heating means specially adapted for induction heating
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40Constructional details, e.g. connection of cartridges and battery parts
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50Control or monitoring
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50Control or monitoring
    • A24F40/51Arrangement of sensors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • General Induction Heating (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

The invention discloses an induction heating method and device for a smoking article, comprising the steps of obtaining an insertion detection signal of a cigarette, judging that the cigarette is inserted, and starting a magnetic induction coil to generate an alternating magnetic field; calculating the axial temperature difference of the cigarettes, and calibrating a heat radiation central area separated out by the smoke; predefining duration time of a heat radiation central area at the same position of the cigarette, and adjusting rising rate of a magnetic induction coil; and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value. The invention can effectively simulate the smoking process of the burning cigarettes, has basically the same smoke plumpness in the early and later stages of smoking, has good uniformity, and can stably separate out and release the smoke, thereby improving the smoking experience of consumers.

Description

Induction heating method and device for smoking articles
Technical Field
The invention relates to the technical field of electromagnetic heating smoking sets, in particular to an induction heating method and device for smoking articles.
Background
When the current electromagnetic heating smoking set works, the magnetic field is controlled only by a method of starting and stopping a switch, so that heating and sucking of cigarettes are realized. The integral heating of the tobacco section is easy to cause uneven saturation of the smoke precipitated in the front and back stages and uneven concentration of the smoke.
Based on a novel electromagnetic heating smoking set, gradually moving a magnetic induction coil from the far lip end to the near lip end of a cigarette to simulate the smoking concept of a burning cigarette; linear displacement of the magnetically induced coil, i.e. linear displacement of the magnetic field. When the magnetic field moves along the cigarette, the magnetic field intensity of the susceptor at different positions inside the cigarette changes along with the movement of the magnetic field, and the central cigarette-separating area of the heat radiation area moves along with the linear movement of the magnetic field, so that the conventional point control type control method is not applicable any more.
Disclosure of Invention
The invention aims to provide an induction heating method and device for a smoking article, which can effectively simulate the smoking process of a burning cigarette, and has the advantages of basically the same smoke plumpness in the early and later stages of smoking, good uniformity, stable release of smoke precipitation and promotion of the smoking experience of consumers.
According to a first aspect of the invention there is provided a method of induction heating a smoking article comprising:
acquiring an insertion detection signal of a cigarette, judging that the cigarette is inserted, and starting a magnetic induction coil to generate an alternating magnetic field;
calculating the axial temperature difference of the cigarettes, and calibrating a heat radiation central area separated out by the smoke;
predefining duration time of a heat radiation central area at the same position of the cigarette, and adjusting rising rate of a magnetic induction coil;
and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value.
Further, obtain the insertion detection signal of cigarette, judge that the cigarette has been inserted, start magnetic induction coil and produce alternating magnetic field, specifically include:
the bottom of the heating cavity is provided with a sensor assembly, and the insertion standard of detection signals of the sensor assembly is predefined;
when the insertion detection signal of the sensor assembly reaches the insertion standard, judging that the current cigarette is inserted, and synchronously sending out an insertion completion prompt;
when the insertion detection signal of the sensor assembly does not reach the insertion standard, judging that the current cigarette is not inserted completely, and synchronously sending out a prompt of not inserting completely;
predefining a self-start interval;
when the detection signal for completing the insertion is obtained again in the self-starting interval time period, the self-starting device of the magnetic induction coil does not respond to an external request;
after waiting for a self-starting interval, when a detection signal for completing insertion is obtained, the self-starting device of the magnetic induction coil responds to an external request to generate an alternating magnetic field; the timing of the refresh self-start interval is synchronized.
The sensor assembly may include a pressure sensor, a distance sensor.
Further, the automatic starting device also comprises a manual resetting key, wherein the manual resetting key is used for manually resetting a timing clock of the automatic starting device of the magnetic induction coil and rapidly refreshing the timing of the self-starting interval;
and responding to the reset request of the manual reset key only when the smoking set is in a standby state.
Further, calculating the axial temperature difference of the cigarette, and calibrating a heat radiation center area of the smoke precipitation, wherein the method specifically comprises the following steps:
predefining an optimal temperature for flue gas precipitation and predefining a grabbing range;
after the magnetic induction coil is started, preheating the cigarettes;
detecting temperature values of all parts of the tobacco section of the cigarette in the axial direction;
calculating the real-time temperature difference between the temperature value and the optimal temperature, and matching each real-time temperature difference with the axial height to form an axial temperature difference;
all grabbing the values in the axial temperature difference to the axial heights in the grabbing range to form calibration points;
sequentially judging the continuity of each calibration point, and eliminating discontinuous calibration points;
and fitting according to the axial heights corresponding to the calibration points to form a time-varying heat radiation central area.
Further, predefining duration time of the heat radiation central area at the same position of the cigarette, and adjusting rising rate of the magnetic induction coil specifically comprises:
predefining an initial speed of the magnetic induction coil when the magnetic induction coil rises, predefining duration of the heat radiation central area at the same position of the cigarette;
calculating the position fall of the magnetic induction coil and the heat radiation central area according to the rising rate of the current magnetic induction coil;
a calibration plane is predefined in the axial direction in the heat radiation central area, and the axial height corresponding to the calibration plane is obtained;
calculating the accumulated time of the tobacco section at the axial height corresponding to the calibration plane after entering the heat radiation central area, and defining the accumulated time as smoke precipitation time;
calculating the difference value between the duration time and the smoke precipitation time, and judging whether the difference value is larger than zero or not:
if not greater than zero, increasing the rising rate of the magnetic induction coil;
if greater than zero, the rate of rise of the magnetically permeable coil is reduced.
Further, an adjustment value is predefined, and when the rising rate of the magnetic induction coil is adjusted, only one unit of adjustment value is performed.
Further, a follow-up adjustment is predefined, and the rising rate of the magnetic induction coil is adjusted according to the absolute value of the difference value.
Further, obtain the journey information of magnetic induction coil in heating chamber periphery, stop magnetic induction coil and go up and down when reaching the threshold value, specifically include:
the threshold value comprises an uplink height threshold value and a downlink height threshold value;
acquiring the ascending height of the magnetic induction coil, and stopping ascending of the magnetic induction coil when judging that the ascending height of the magnetic induction coil reaches the ascending height threshold value;
a preset hover time, when the position of the magnetic induction coil reaches the upper altitude threshold value, after waiting for one hover time, automatically closing the magnetic induction coil;
and acquiring the descending height of the magnetic induction coil, and stopping descending of the magnetic induction coil when judging that the descending height of the magnetic induction coil reaches the descending height threshold value.
Further, after the magnetic induction coil descends to the down height threshold, the method further comprises up reset, and specifically comprises the following steps:
predefining a reset height to which the position of the magnetic induction coil is driven by the down-height threshold;
and after the magnetic induction coil is preheated and self-started, driving the position of the magnetic induction coil from the reset height to the down height threshold value.
According to a second aspect of the invention there is provided an induction heating device for a smoking article comprising:
and a data acquisition module: acquiring an insertion detection signal of a cigarette, judging that the cigarette is inserted, and starting a magnetic induction coil to generate an alternating magnetic field;
and a data processing module: calculating the axial temperature difference of the cigarettes, and calibrating a heat radiation center area where the smoke is separated out;
and a rate adjustment module: predefining duration time of a heat radiation central area at the same position of the cigarette, and adjusting rising rate of the magnetic induction coil;
and the stroke control module is used for: and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value.
According to a third aspect of the present invention there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method steps of any one of the above-mentioned first aspects when the computer program is executed.
According to a fourth aspect of the present invention there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the method steps of any of the first aspects described above.
The beneficial effects of the invention are as follows:
the invention provides an induction heating method and device for a smoke product, which simulate the smoking effect of a burning cigarette by using the linear displacement of a moving magnetic field, judge the precipitation effect of smoke by using the temperature duration time of a heat radiation center area, and synchronously adjust the rising rate of an induction coil, so that smoke can be uniformly precipitated in the front and rear stages of the smoke product, and the saturation degree of the smoke is basically consistent.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the invention. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.
Fig. 1 is a flow chart of an induction heating method of a smoking article according to an embodiment of the invention;
fig. 2 is a modular block diagram of an induction heating device for a smoking article according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 4 is a structural diagram of a novel magnetic induction smoking set according to an embodiment of the present invention.
In the figure: 1. a housing; 2. a coil; 3. a clamping device; 4. a connecting piece; 5. an adapter; 6. a sensor; 8. a driving device; 12. a heating chamber; 61. an induction end; 81. a screw rod; 82. a follower disk.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without undue effort. The term "design azimuth" merely means a relative positional relationship between the respective members, not an absolute positional relationship.
In order to facilitate understanding of the induction heating method and apparatus of a smoking article of the present invention, the present invention also provides a structural diagram of a novel magnetic induction smoking article, as shown in fig. 4, the basic concept of which is: the magnetic field intensity in the local area is changed through the position movement of the magnetic induction coil, so that the heating efficiency of the susceptors at different positions in the cigarette is controlled, the linear displacement of the magnetic induction coil is synchronous with the effective heating area, and the effective heating area moves from the far lip end to the near lip end along with the movement of the magnetic induction coil, so that the smoking process of burning cigarettes is basically repeated.
The novel magnetic induction smoking set adopts the cooperation of the driving device 8 and the screw rod 81 to drive the lifting of the coil 2. Specifically, the upper end of the shell 1 is provided with a heating cavity 12 for inserting cigarettes, the coil 2 is sleeved on the periphery of the heating cavity 12, and the coil 2 and the heating cavity 12 can slide; the coil 2 is connected with the screw rod 81 through the adapter piece 5, and the adapter piece 5 is in threaded connection with the screw rod 81, so that when the screw rod 81 rotates, the adapter piece 5 and the coil 2 can synchronously ascend or descend along the screw rod 81.
Further, the top of the heating cavity 12 is provided with a clamping device 3 for clamping the cigarettes, so that the cigarettes do not fall off randomly during suction.
Further, a follower disc 82 may be disposed at the top end of the screw rod 81, and the follower disc 82 is linked with the clamping device 3 through a connecting piece 4, and the clamping state of the clamping device 3 is controlled through the rotation direction of the screw rod 81, so that the lifting of the coil 2 is associated with the clamping state of the clamping device 3, and the suction, i.e. clamping, effect is achieved.
Further, the sensor group 6 may be disposed below the heating chamber 12, and the sensing end 61 of the sensor group 6 may be disposed at the bottom of the heating chamber 12. The sensor group 6 may include a temperature sensor, a pressure sensor, a distance sensor, a gas concentration sensor, and the like.
Example 1
According to a first aspect of the invention there is provided a method of induction heating a smoking article, as shown in figure 1, which is a flow chart of a method of induction heating a smoking article, comprising:
step S101: and obtaining an insertion detection signal of the cigarette, judging that the cigarette is inserted, and starting the magnetic induction coil to generate an alternating magnetic field.
In the embodiment of the invention, the insertion condition of the cigarettes is judged before the smoking. For automatically controlled smoking articles, if the position of the cigarette insertion is not satisfactory, the appearance of the smoking experience is greatly reduced.
For the insertion detection of the cigarettes, the judgment can be carried out through the pressure value between the front end of the cigarettes and the bottom wall of the heating cavity; the distance value between the front end of the cigarette and the bottom of the heating cavity can be used for judging. When the cigarette is in a certain range with the bottom wall of the heating cavity, the cigarette can be considered to be inserted completely, and heating and sucking can be performed.
In the embodiment of the invention, the specific steps of inserting and detecting the cigarettes comprise:
the bottom of the heating cavity is provided with a sensor assembly, and the insertion standard of detection signals of the sensor assembly is predefined;
when the insertion detection signal of the sensor assembly reaches the insertion standard, judging that the current cigarette is inserted, and synchronously sending out an insertion completion prompt;
when the insertion detection signal of the sensor assembly does not reach the insertion standard, judging that the current cigarette is not inserted completely, and synchronously sending out a prompt of not inserting completely;
predefining a self-start interval;
when the detection signal for completing the insertion is obtained again in the self-starting interval time period, the self-starting device of the magnetic induction coil does not respond to an external request;
after waiting for a self-starting interval, when a detection signal for completing insertion is obtained, the self-starting device of the magnetic induction coil responds to an external request to generate an alternating magnetic field; the timing of the refresh self-start interval is synchronized.
In the embodiment of the invention, the insertion standard can predefine a pressure value or a spacing value as a judgment standard, and different parameter values can be formulated according to cigarettes of different types. It should be clear that the pressure value may preferably be a trigger value rather than a continuous value.
Regarding the prompting, the user can be prompted by various means such as an indicator light, voice, screen display, etc.
In the embodiment of the invention, after the cigarette is inserted, heating and sucking can be started, and at the moment, the magnetic induction coil can be started automatically to preheat the cigarette. The flue gas can be separated out in the preheating stage, and the flue gas can be separated out without separation. For the triggering of the self-starting of the magnetic induction coil, the self-starting interval time can be set, so that the repeated execution of the preheating program caused by repeated self-starting for a plurality of times is avoided, and the normal pumping experience is influenced.
Further, when the waiting time of the self-starting interval is not full or the timing automatic refresh of the self-starting interval fails, the timing clock of the self-starting device can be reset through a manual reset key. It will be appreciated that the reset request of the manual reset key is responded to only when the smoking article is in the standby state.
Step S102: and calculating the axial temperature difference of the cigarettes, and calibrating the heat radiation central area of the smoke precipitation.
In the embodiment of the invention, after the alternating magnetic field is generated by the magnetic induction coil, independent susceptors positioned at all positions in the cigarette can generate heat, but the heat generation efficiency of all susceptors is different due to the intensity of the magnetic field; if and only if the heat generation efficiency of the susceptor located within the magnetic induction coil is highest, a greater amount of heat can be generated to heat the smoking article therearound, thereby precipitating smoke.
Based on the movement of the magnetic induction coil, the heat collecting area moves synchronously, and in the embodiment of the invention, the magnetic induction coil is provided with the far lip end to the near lip end to move linearly, the heat collecting area moves gradually from the far lip end to the near lip end, and the precipitation position of smoke is basically consistent with the change of the burning cigarette during smoking, so that the smoking effect of the burning cigarette can be simulated.
In embodiments of the invention, the region of heat concentration may be defined as the heat radiation central region, which is capable of stabilizing the evolved smoke when the smoking article is in this region. The heating time of the unit smoke product in the central area of the heat radiation area can be defined based on the smoke precipitation amount of the unit smoke product, so that the smoke of the unit smoke product is completely precipitated, and the utilization rate is improved.
In the embodiment of the invention, the determination of the heat radiation center area can be performed by the temperature difference caused by heat aggregation, so that the precipitation time of the flue gas can be effectively estimated, and the specific steps comprise:
predefining an optimal temperature for flue gas precipitation and predefining a grabbing range;
after the magnetic induction coil is started, preheating the cigarettes;
detecting temperature values of all parts of the tobacco section of the cigarette in the axial direction;
calculating the real-time temperature difference between the temperature value and the optimal temperature, and matching each real-time temperature difference with the axial height to form an axial temperature difference;
all grabbing the values in the axial temperature difference to the axial heights in the grabbing range to form calibration points;
sequentially judging the continuity of each calibration point, and eliminating discontinuous calibration points;
and fitting according to the axial heights corresponding to the calibration points to form a time-varying heat radiation central area.
In one example, the calibration points for the axial temperature difference should occur in a focused, continuous manner. Aiming at various conditions, when discontinuous calibration points exist outside the clusters, the calibration points can be directly removed; when the discontinuous calibration points exist in the clusters, the coverage can be performed.
Further, if a part of calibration points are discontinuous, the temperature measurement of the points is indicated to have errors.
When the thermal radiation central area is fitted, the basic model of the thermal radiation central area can be determined to be cylindrical based on the annular heating cavity, and the cylindrical height can be determined according to the axial height corresponding to the calibration point. It will be appreciated that the position of the cylindrical former formed by the central region of the heat radiation will be displaced synchronously and gradually upwards based on the linear displacement of the magnetic induction coil.
Step S103: the duration of the heat radiation central area at the same position of the cigarette is predefined, and the rising speed of the magnetic induction coil is adjusted.
In the embodiment of the invention, an initial speed can be set for the magnetic induction coil to perform ascending operation, and then the ascending speed of the magnetic induction coil is adjusted according to the follow-up effect of the heat radiation central area. It will be appreciated that, limited by the efficiency of magnetic induction heating, the position of the magnetic induction coil is theoretically always higher than the heat radiation central region; if the external environment temperature is lower, the overall efficiency of magnetic induction heating is further reduced, and the fixed rising rate is easy to cause incomplete precipitation of smoke.
Based on the position drop between the heat radiation center region and the magnetic induction coil:
predefining a magnetic field adjustment value, predefining a fall range;
judging whether the position fall is in the fall range or not:
if the magnetic field intensity is in the range, the magnetic field intensity is not adjusted;
if the magnetic field intensity is lower than the preset value, the magnetic field intensity can be improved, and the magnetic field adjustment value of one unit is improved;
if the magnetic field intensity exceeds the predetermined value, the magnetic field intensity is reduced by one unit.
In the embodiment of the invention, in order to ensure that the smoke of the smoking articles at all positions can be completely separated out, the rising speed of the magnetic induction coil is adjusted, so that the migration speed of the heat radiation central area is influenced, and the smoking articles in the local area are fully heated. The specific steps of adjusting the rising rate of the magnetic induction coil comprise:
predefining an initial speed of the magnetic induction coil when the magnetic induction coil rises, predefining duration of the heat radiation central area at the same position of the cigarette;
calculating the position fall of the magnetic induction coil and the heat radiation central area according to the rising rate of the current magnetic induction coil;
a calibration plane is predefined in the axial direction in the heat radiation central area, and the axial height corresponding to the calibration plane is obtained;
calculating the accumulated time of the tobacco section at the axial height corresponding to the calibration plane after entering the heat radiation central area, and defining the accumulated time as smoke precipitation time;
calculating the difference value between the duration time and the smoke precipitation time, and judging whether the difference value is larger than zero or not:
if not greater than zero, increasing the rising rate of the magnetic induction coil;
if greater than zero, the rate of rise of the magnetically permeable coil is reduced.
In an embodiment of the invention, the rising rate of the magnetic induction coil is adjusted:
the adjustment value may be predefined, and only one unit of adjustment value is performed when the rising rate of the magnetic induction coil is adjusted. The adjustment direction is determined by the sign of the difference.
The mode of follow-up adjustment can be preset, and the rising rate of the magnetic induction coil can be adjusted according to the absolute value of the difference value. The adjustment direction is determined by the sign of the difference.
In the embodiment of the invention, the determination of the calibration plane can be preset according to the height of the heat radiation central area, the definition of the calibration plane can be one half of the calibration plane, and the definition can be two thirds of the calibration plane, and the optimal position can be obtained through experiments according to the sizes of different cigarettes. It should be clear that the calibration plane should not be defined as the upper end surface of the heat radiation central area, and that sufficient heating time should be left for precipitation of flue gas.
In the embodiment of the invention, the ideal value of the smoke precipitation time is the duration time of the heat radiation central area at the same position of the cigarette, and when the smoke precipitation time is larger, the excessive heating time is indicated; when the fume precipitation time is smaller, the heating time is insufficient.
Step S104: and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value.
In the embodiment of the invention, when the magnetic induction coil rises to the end of the near lip end, heating is stopped, but the position for calibrating the plane is not the highest point, so that a hovering time can be set for completely separating out the smoke of the smoking article above the calibrating plane, and then the operation of the magnetic induction coil is automatically closed. The method comprises the following specific steps:
the threshold value comprises an uplink height threshold value and a downlink height threshold value;
acquiring the ascending height of the magnetic induction coil, and stopping ascending of the magnetic induction coil when judging that the ascending height of the magnetic induction coil reaches the ascending height threshold value;
a preset hover time, when the position of the magnetic induction coil reaches the upper altitude threshold value, after waiting for one hover time, automatically closing the magnetic induction coil;
and acquiring the descending height of the magnetic induction coil, and stopping descending of the magnetic induction coil when judging that the descending height of the magnetic induction coil reaches the descending height threshold value.
It should be clear that the magnetic induction coil may be automatically turned off after the hover is completed; meanwhile, the position of the magnetic induction coil should be reset to the far lip end, and the magnetic induction coil can be directly started when being used next time.
According to the clamping requirement of cigarettes, the rotating direction of the screw rod 81 can be linked with the clamping device 3, so as to ensure that the elastic structure of the clamping device 3 is relaxed and the magnetic induction coil is hovered when being positioned at the far lip end, and the magnetic induction coil can be reset upwards after being lowered to the lower height threshold, and the specific steps comprise:
predefining a reset height to which the position of the magnetic induction coil is driven by the down-height threshold;
and after the magnetic induction coil is preheated and self-started, driving the position of the magnetic induction coil from the reset height to the down height threshold value.
In a specific example, the clamping state of the clamping device 3 on the cigarette is linked with the lifting of the coil 2, preferably, when the coil 2 is lifted, the clamping device 3 clamps the cigarette 9; when the coil 2 descends, the gripping means 3 release the cigarettes 9.
Specifically, the clamping state of the clamping device 3 can be primarily determined by the rotation direction of the screw rod 81, and the rotation direction of the screw rod 81 is directly related to the lifting of the coil 2.
In the initial state, the coil 2 is placed at the bottom of the screw rod 81, and at this time, the connecting member 4 is in a relaxed state and the holding device 3 is in a released state.
When the screw rod 81 rotates, the coil 2 rises, and the follow-up disc 82 and the screw rod 81 rotate along with the screw rod 81 due to friction force relation; when the follower disk 82 rotates, the connecting piece 4 is driven, and the connecting piece 4 pulls the clamping device 3, so that the state of the clamping device 3 is changed into a clamping state; due to the structural limitation of the clamping device 3, when the rotation range of the clamping device 3 reaches the upper limit, the tension of the connecting piece 4 on the follow-up disc 82 is increased until the friction balance between the follow-up disc 82 and the screw rod 81 is broken, so that the follow-up disc 82 does not rotate along with the screw rod 81 any more; the screw 81 continues to rotate and the coil 2 continues to rise.
When the coil 2 rises to the highest, i.e. the upper height threshold, the suction is completed and the coil 2 should be restored to the original state.
When the screw rod 81 is reversed, the coil 2 descends, and the tension between the follow-up disc 82 and the connecting piece 4 is reduced until friction balance is achieved between the follow-up disc 82 and the screw rod 81, and the state of the clamping device 3 gradually changes into a release state under the influence of the self elasticity of the clamping device 3; the follower plate 82 rotates reversely along with the screw rod 81 to drive the connecting piece 4, and the connecting piece 4 pulls the clamping device 3 to rotate reversely, so that the state of the clamping device 3 is changed into an over-release state; the reversing range of the clamping device 3 reaches the upper limit under the structural limitation of the clamping device 3, and the pulling force of the connecting piece 4 on the follow-up disc 82 is increased until the friction balance between the follow-up disc 82 and the screw rod 81 is destroyed, so that the follow-up disc 82 does not reverse along with the screw rod 81 any more, and the clamping device 3 is kept in an over-release state; the screw 81 continues to rotate and the coil 2 continues to descend.
When the coil 2 descends to the lowest position, namely the descending height threshold, the over-release state of the clamping device 3 is restored to the release state, and the screw rod 81 can reversely rotate for a certain number of times, namely ascending reset.
It will be appreciated that the holding means 3 is in both the over-released condition and the released condition, and that the cigarettes 9 can be inserted inside the heating chamber 12. However, the clamping device 3 is in an over-release state for a long time, internal structural stress cannot be relaxed, clamping stability is easily damaged, and the service life of the clamping device 3 is reduced.
Example two
According to a second aspect of the invention there is provided an induction heating device for a smoking article. As shown in fig. 2, a block diagram of an induction heating device for a smoking article comprising:
the data acquisition module 201: acquiring an insertion detection signal of a cigarette, judging that the cigarette is inserted, and starting a magnetic induction coil to generate an alternating magnetic field;
the data processing module 202: calculating the axial temperature difference of the cigarettes, and calibrating a heat radiation center area where the smoke is separated out;
rate adjustment module 203: predefining duration time of a heat radiation central area at the same position of the cigarette, and adjusting rising rate of the magnetic induction coil;
the travel control module 204: and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value.
It can be understood that the apparatus provided in the embodiment of the present invention is applicable to the method described in the first embodiment, and specific functions of each module may refer to the above method flow, which is not repeated herein.
Example III
The embodiment of the invention provides electronic equipment for realizing the method in the first embodiment. Fig. 3 is a schematic entity structure of an electronic device according to an embodiment of the present invention. The electronic device may include: at least one central processing unit, at least one network interface, a control interface, a memory, at least one communication bus.
The communication bus is used for realizing connection communication and information interaction among all the components.
The network interface may optionally include a standard wired interface, a wireless interface (e.g., wi-Fi interface), among others.
The control interface is used for outputting control operation according to the instruction.
Wherein the central processor may comprise one or more processing cores. The central processing unit connects the respective parts in the whole terminal by various interfaces and lines, and performs various functions of the terminal and processes data by executing or executing instructions, programs, code sets or instruction sets stored in the memory, and calling data stored in the memory according to the method of the first embodiment.
The Memory may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). The memory may be used to store instructions, programs, code sets, or instruction sets. The memory may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), a method for implementing the above-described embodiment one, etc.; the storage data area may store data or the like referred to in the above respective method embodiments.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of the first embodiment described above. The computer readable storage medium may include, among other things, any type of disk including floppy disks, optical disks, DVDs, CD-ROMs, micro-drives, and magneto-optical disks, ROM, RAM, EPROM, EEPROM, DRAM, VRAM, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, such as the division of the units, merely a logical function division, and there may be additional manners of dividing the actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some service interface, device or unit indirect coupling or communication connection, electrical or otherwise.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on this understanding, the technical solution of the present invention may be embodied essentially or partly in the form of a software product, or all or part of the technical solution, which is stored in a memory, and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be performed by hardware associated with a program that is stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific examples described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims (8)

1. A method of induction heating a smoking article comprising:
acquiring an insertion detection signal of a cigarette, judging that the cigarette is inserted, and starting a magnetic induction coil to generate an alternating magnetic field;
calculating the axial temperature difference of the cigarettes, and calibrating a heat radiation central area separated out by the smoke; the method specifically comprises the following steps:
predefining an optimal temperature for flue gas precipitation and predefining a grabbing range;
after the magnetic induction coil is started, preheating the cigarettes;
detecting temperature values of all parts of the tobacco section of the cigarette in the axial direction;
calculating the real-time temperature difference between the temperature value and the optimal temperature, and matching each real-time temperature difference with the axial height to form an axial temperature difference;
all grabbing the values in the axial temperature difference to the axial heights in the grabbing range to form calibration points;
sequentially judging the continuity of each calibration point, and eliminating discontinuous calibration points;
fitting according to the axial heights corresponding to the calibration points to form a time-varying heat radiation central area;
predefining duration time of a heat radiation central area at the same position of the cigarette, and adjusting rising rate of a magnetic induction coil; the method specifically comprises the following steps:
predefining an initial speed of the magnetic induction coil when the magnetic induction coil rises, predefining duration of the heat radiation central area at the same position of the cigarette;
calculating the position fall of the magnetic induction coil and the heat radiation central area according to the rising rate of the current magnetic induction coil;
a calibration plane is predefined in the axial direction in the heat radiation central area, and the axial height corresponding to the calibration plane is obtained;
calculating the accumulated time of the tobacco section at the axial height corresponding to the calibration plane after entering the heat radiation central area, and defining the accumulated time as smoke precipitation time;
calculating the difference value between the duration time and the smoke precipitation time, and judging whether the difference value is larger than zero or not:
if not greater than zero, increasing the rising rate of the magnetic induction coil;
if the magnetic induction coil is larger than zero, the rising rate of the magnetic induction coil is reduced;
and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value.
2. An induction heating method of a smoking article according to claim 1, wherein obtaining an insertion detection signal for a cigarette, determining that a cigarette has been inserted, and activating a magnetically induced coil to generate an alternating magnetic field, comprises:
the bottom of the heating cavity is provided with a sensor assembly, and the insertion standard of detection signals of the sensor assembly is predefined;
when the insertion detection signal of the sensor assembly reaches the insertion standard, judging that the current cigarette is inserted, and synchronously sending out an insertion completion prompt;
when the insertion detection signal of the sensor assembly does not reach the insertion standard, judging that the current cigarette is not inserted completely, and synchronously sending out a prompt of not inserting completely;
predefining a self-start interval;
when the detection signal for completing the insertion is obtained again in the self-starting interval time period, the self-starting device of the magnetic induction coil does not respond to an external request;
after waiting for a self-starting interval, when a detection signal for completing insertion is obtained, the self-starting device of the magnetic induction coil responds to an external request to generate an alternating magnetic field; the timing of the refresh self-start interval is synchronized.
3. The method of induction heating of a smoking article according to claim 2, further comprising a manual reset key to manually reset a timing clock of a self-starting device of the magnetic induction coil, the timing of the self-starting interval being rapidly refreshed;
and responding to the reset request of the manual reset key only when the smoking set is in a standby state.
4. An induction heating method of a smoking article according to claim 1, wherein obtaining travel information of the magnetic induction coil around the heating chamber and stopping lifting of the magnetic induction coil when a threshold is reached, comprises:
the threshold value comprises an uplink height threshold value and a downlink height threshold value;
acquiring the ascending height of the magnetic induction coil, and stopping ascending of the magnetic induction coil when judging that the ascending height of the magnetic induction coil reaches the ascending height threshold value;
a preset hover time, when the position of the magnetic induction coil reaches the upper altitude threshold value, after waiting for one hover time, automatically closing the magnetic induction coil;
and acquiring the descending height of the magnetic induction coil, and stopping descending of the magnetic induction coil when judging that the descending height of the magnetic induction coil reaches the descending height threshold value.
5. The method of induction heating of a smoking article according to claim 4, further comprising an upstream reset after the magnetic induction coil has fallen to the downstream elevation threshold, comprising:
predefining a reset height to which the position of the magnetic induction coil is driven by the down-height threshold;
and after the magnetic induction coil is preheated and self-started, driving the position of the magnetic induction coil from the reset height to the down height threshold value.
6. An induction heating device for a smoking article for carrying out the method of claim 1, comprising:
and a data acquisition module: acquiring an insertion detection signal of a cigarette, judging that the cigarette is inserted, and starting a magnetic induction coil to generate an alternating magnetic field;
and a data processing module: calculating the axial temperature difference of the cigarettes, and calibrating a heat radiation center area where the smoke is separated out;
and a rate adjustment module: predefining duration time of a heat radiation central area at the same position of the cigarette, and adjusting rising rate of the magnetic induction coil;
and the stroke control module is used for: and acquiring the travel information of the magnetic induction coil at the periphery of the heating cavity, and stopping lifting of the magnetic induction coil when the travel information reaches a threshold value.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of a method of induction heating a smoking article according to any one of claims 1 to 5 when the computer program is executed.
8. A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of an induction heating method of a smoking article according to any one of claims 1 to 5.
CN202210171472.8A 2022-02-24 2022-02-24 Induction heating method and device for smoking articles Active CN114424843B (en)

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PCT/CN2022/129459 WO2023160006A1 (en) 2022-02-24 2022-11-03 Induction heating method and device for smoke generation product

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