Patent Publication Number: US-2023145757-A1

Title: Sidestream smoke removal device and control method thereof

Description:
TECHNICAL FIELD 
     The present disclosure relates to a sidestream smoke removal device and a control method thereof, and more particularly, to a sidestream smoke removal device capable of improving ease of use and safety by providing a safe extinguishing function for a smoking article and a control method performed in the device. 
     BACKGROUND ART 
     A sidestream smoke removal device is a kind of smoking aid designed for the purpose of reducing hand smell and removing (i.e., purifying) sidestream smoke. The sidestream smoke removal device typically has a closed smoking space and a sidestream smoke remover, and users may insert a cigarette into the smoking space inside the sidestream smoke removal device and smoke the cigarette. 
     However, most of the sidestream smoke removal devices proposed so far do not have an extinguisher. Accordingly, users of the devices are experiencing the inconvenience of having to manually remove and extinguish a cigarette after an end of smoking, and a mistake in an extinguishing process may lead to burns or fire. 
     DISCLOSURE 
     Technical Problem 
     Some embodiments of the present disclosure are directed to providing a sidestream smoke removal device capable of further improving ease of use and safety by providing a safe extinguishing function for a smoking article and a control method performed in the device. 
     Objectives of the present disclosure are not limited to the above-mentioned objective, and other unmentioned objectives should be clearly understood by those of ordinary skill in the art to which the present disclosure pertains from the description below. 
     Technical Solution 
     A sidestream smoke removal device according to some embodiments of the present disclosure includes a housing in which a smoking space is formed, an article insertion portion which is disposed at one end of the housing and forms an opening for insertion of a smoking article into the smoking space, an ignition portion which is configured to ignite the smoking article inserted into the smoking space, a sidestream smoke processing portion which is configured to process sidestream smoke generated from the smoking article inserted into the smoking space, and a cutting portion configured to provide a cutting function for the smoking article inserted into the smoking space. 
     In some embodiments, a push-type button may be disposed on an outer surface of the housing, and the cutting portion may be configured to cut the inserted smoking article as an external force is applied to the push-type button. 
     In some embodiments, the cutting portion may be configured to cut the inserted smoking article as an external force twisting the housing is applied to the housing. 
     In some embodiments, the cutting portion may be configured to cut the inserted smoking article as an external force stretching or contracting the housing is applied to the housing. 
     In some embodiments, the cutting portion may include a plurality of cutting blades, may have an opening formed therein, and may be configured to cut the inserted smoking article as the plurality of cutting blades close in a state in which the smoking article has passed through the opening. 
     In some embodiments, the cutting portion may include a plurality of cutting blades, may have an opening formed therein, and may be configured to cut the inserted smoking article as the plurality of cutting blades move in a state in which the smoking article has passed through the opening. Here, as the plurality of cutting blades move, an overlapping region between the plurality of cutting blades may be increased and the size of the opening may be reduced. 
     In some embodiments, the cutting portion may be disposed at a fixed position and configured to cut a specific portion of the inserted smoking article. 
     In some embodiments, the cutting portion may be configured to be movable. 
     In some embodiments, the sidestream smoke processing portion may include a filter structure configured to filter the sidestream smoke and an exhaust fan configured to exhaust the filtered sidestream smoke. 
     In some embodiments, a vent through which outside air enters may be formed in the housing. 
     In some embodiments, the sidestream smoke removal device may further include a temperature sensor which is disposed to measure temperature in the vicinity of a downstream end of a smoking material portion constituting the inserted smoking article and a controller which is configured to detect an end of smoking on the basis of the temperature measured by the temperature sensor. 
     Advantageous Effects 
     According to some embodiments of the present disclosure, a cutting portion configured to cut a smoking article can be disposed inside a sidestream smoke removal device. By cutting a smoking article, which is undergoing combustion, to prevent further combustion, the cutting portion can provide a convenient, safe extinguishing function at a point in time desired by a user and can minimize the risk of burns that may occur due to carelessness of the user (e.g., the risk of burns due to carelessness when directly extinguishing the smoking article) and the risk of fire. 
     Also, a vent and an exhaust fan can be appropriately controlled according to smoking progress, and thus a user&#39;s smoking satisfaction can be improved. 
     In addition, an automatic extinguishing function can be performed upon detecting an end of smoking. Accordingly, the risk of fire or burns due to the user&#39;s carelessness can be minimized. 
     The advantageous effects according to the technical spirit of the present disclosure are not limited to the above-mentioned advantageous effects, and other unmentioned advantageous effects should be clearly understood by those of ordinary skill in the art from the description below. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIGS.  1  to  4    are exemplary views illustrating a sidestream smoke removal device according to some embodiments of the present disclosure and various modifications thereof. 
         FIG.  5    is an exemplary view illustrating a sidestream smoke removal device having an extinguishing function according to some embodiments of the present disclosure. 
         FIGS.  6  to  8    are exemplary views illustrating various operation methods of the sidestream smoke removal device having an extinguishing function according to some embodiments of the present disclosure. 
         FIGS.  9  and  10    are exemplary views illustrating a cutting structure of a cutting portion according to some embodiments of the present disclosure. 
         FIG.  11    is an exemplary flowchart showing a control method of the sidestream smoke removal device according to some embodiments of the present disclosure. 
         FIG.  12    is an exemplary flowchart showing a control method of the sidestream smoke removal device according to some other embodiments of the present disclosure. 
         FIG.  13    is an exemplary view illustrating a method of determining the current smoking position according to some embodiments of the present disclosure. 
     
    
    
     MODES OF THE INVENTION 
     Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Advantages and features of the present disclosure and methods of achieving the same should become clear with embodiments described in detail below with reference to the accompanying drawings. However, the technical spirit of the present disclosure is not limited to the following embodiments and may be implemented in various different forms. The embodiments make the technical spirit of the present disclosure complete and are provided to completely inform those of ordinary skill in the art to which the present disclosure pertains of the scope of the present disclosure. The technical spirit of the present disclosure is defined only by the scope of the claims. 
     In assigning reference numerals to components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even when the components are illustrated in different drawings. Also, in describing the present disclosure, when detailed description of a known related configuration or function is deemed as having the possibility of obscuring the gist of the present disclosure, the detailed description thereof will be omitted. 
     Unless otherwise defined, all terms including technical or scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure pertains. Terms defined in commonly used dictionaries should not be construed in an idealized or overly formal sense unless expressly so defined herein. Terms used herein are for describing the embodiments and are not intended to limit the present disclosure. In this specification, a singular expression includes a plural expression unless the context clearly indicates otherwise. 
     Also, in describing components of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. Such terms are only used for distinguishing one component from another component, and the essence, order, sequence, or the like of the corresponding component is not limited by the terms. In a case in which a certain component is described as being “connected,” “coupled,” or “linked” to another component, it should be understood that, although the component may be directly connected or linked to the other component, still another component may also be “connected,” “coupled,” or “linked” between the two components. 
     The terms “comprises” and/or “comprising” used herein do not preclude the presence or addition of one or more components, steps, operations, and/or devices other than those mentioned. 
     First, some terms used in various embodiments of the present disclosure will be clarified. 
     In the following embodiments, “smoking article” may refer to any product that can be smoked or any product that can provide a smoking experience, regardless of whether the product is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, smoking articles may include products that can be smoked, such as a cigarette, a cigar, and a cigarillo. 
     In the following embodiments, “smoking material” may refer to a material that generates smoke and/or an aerosol or is used in smoking. For example, the smoking material may include a tobacco material. For example, the tobacco material may include pieces of tobacco leaves, tobacco stems, and materials obtained by processing the same. As a more specific example, the tobacco material may include ground tobacco leaves, ground reconstituted tobacco, expanded shredded tobacco, expanded tobacco midribs, reconstituted tobacco leaves, and the like, but is not limited thereto. 
     In the following embodiments, “upstream” or “upstream direction” may refer to a direction moving away from an oral region of a user, and “downstream” or “downstream direction” may refer to a direction approaching the oral region of the user. The terms “upstream” and “downstream” may be used to describe relative positions of components constituting a smoking article. For example, in a smoking article  30  illustrated in  FIG.  1    and so on, a filter portion is disposed downstream or in a downstream direction of a smoking material portion, and the smoking material portion is disposed upstream or in an upstream direction of the filter portion. 
     In the following embodiments, “longitudinal direction” may refer to a direction corresponding to a longitudinal axis of a smoking article. 
     In the following embodiments, “puff” refers to inhalation by a user, and the inhalation may refer to a situation in which a user draws smoke into his or her oral cavity, nasal cavity, or lungs through the mouth or nose. 
     Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. 
       FIG.  1    is an exemplary view illustrating a sidestream smoke removal device  1  according to some embodiments of the present disclosure. In particular, the drawings such as  FIG.  1    illustrate a state in which the smoking article  30  is inserted into the sidestream smoke removal device  1 . 
     As illustrated in  FIG.  1   , the sidestream smoke removal device  1  may include a housing  11 , an article insertion portion  12 , a back cover  13 , an insulating portion  14 , a temperature sensor  20 , an ignition portion  15 , a sidestream smoke processing portion  16 , a mesh  17 , a display  19 , and a controller  18 . However, only the components relating to the embodiment of the present disclosure are illustrated in  FIG.  1   . Therefore, those of ordinary skill in the art to which the present disclosure pertains should understand that the sidestream smoke removal device  1  may further include general-purpose components other than the components illustrated in  FIG.  1   . For example, the sidestream smoke removal device  1  may further include a battery (not illustrated) configured to supply power to electrical components (e.g., the controller  18 , the display  19 , etc.). Also, some of the components illustrated in  FIG.  1    may not be essential components of the sidestream smoke removal device  1 . That is, the sidestream smoke removal device  1  may also be implemented in a form in which some of the components illustrated in  FIG.  1    are omitted. For example, the sidestream smoke removal device  1  may not include the display  19 . Hereinafter, each component of the sidestream smoke removal device  1  will be described. 
     The housing  11  may form a smoking space inside the sidestream smoke removal device  1  and may form at least a portion of an exterior of the sidestream smoke removal device  1 .  FIG.  1    illustrates the housing  11  as a sidewall of the sidestream smoke removal device  1 , but the housing  11  may also refer to the entire exterior-forming structure including the article insertion portion  12 , the back cover  13 , and the insulating portion  14 . In order to ensure the durability of the sidestream smoke removal device  1  and minimize the risk of damage thereto, the housing  11  may be made of a sturdy material. 
     In some embodiments, a vent  111  may be formed in the housing  11  to allow outside air to smoothly enter the smoking space. By allowing the outside air to enter during smoking, the vent  111  may promote combustion of the smoking article  30 , and accordingly, a smoking function of the sidestream smoke removal device  1  may be significantly improved.  FIG.  1    illustrates an example in which a single vent  111  is formed in the housing  11 , but the number of vents  111  may also be plural. In addition, positions at which vents  111  are formed, sizes of the vents, intervals between the vents, etc. may also be designed in various ways. The opening/closing of the vent  111  and/or a degree of opening/closing thereof may be controlled by the controller  18 . This will be described below with reference to  FIG.  11   . 
     Next, the article insertion portion  12  may be disposed at one end (e.g., an upper end) of the housing  11  and form an opening for insertion of the smoking article  30 . A user may insert the smoking article  30  into the smoking space inside the sidestream smoke removal device  1  through the article insertion portion  12 . In order to block the heat inside the smoking space from being released to the outside, the article insertion portion  12  may be made of an insulating material. Also, in order to prevent shaking of the inserted smoking article  30 , the article insertion portion  12  may have a holder structure that can hold the smoking article  30 . 
     In some embodiments, the article insertion portion  12  may have a structure in which it is possible to adjust the size of the opening. For example, the article insertion portion  12  may have a structure that allows the opening to be tightened or loosely expanded through manual operation. As another example, the article insertion portion  12  may also be configured to automatically tighten the opening to fit the smoking article  30 . As a more specific example, the article insertion portion  12  may be controlled by the controller  18 , and the controller  18  may control the opening of the article insertion portion  12  to be tightened upon a sensor detecting insertion of the smoking article  30  or upon reception of a user input (e.g., a push on a button). According to the present embodiment, since the size of the opening is adjusted to fit the smoking article  30 , shaking of the smoking article  30  may be prevented, and support stability for the smoking article  30  may be improved. Further, since it becomes possible to insert smoking articles of various sizes, usability of the sidestream smoke removal device  1  may also be improved. 
     The smoking article  30  may consist of a filter portion which is disposed at a downstream portion and a smoking material portion which abuts an upstream end of the filter portion. However, a detailed structure of the smoking article  30  may be modified in various ways. The filter portion may include a filter material that can filter smoke, and the smoking material portion may include a smoking material. Examples of the smoking article  30  may include a combustion-type cigarette, but the smoking article  30  is not limited thereto and may be any article which generates sidestream smoke during smoking. 
     Next, the back cover  13  may be disposed at the other end (e.g., a lower end) of the housing  11  and serve as a cover of the sidestream smoke removal device  1 . A gas discharge path may be formed in the back cover  13  to allow sidestream smoke processed (purified) through the sidestream smoke processing portion  16  to be discharged to the outside. For example, a gas discharge path such a fine hole may be formed in the back cover  13 . 
     Next, the insulating portion  14  may be made of a material having low thermal conductivity and block the heat inside the smoking space from being released to the outside. By being disposed on an outer surface of the housing  11 , the insulating portion  14  may serve to prevent the risk of burns due to internal heat when the user&#39;s body comes in contact with the sidestream smoke removal device  1  (e.g., when the user grips the device  1  for smoking). 
     Next, the temperature sensor  20  may be disposed inside the smoking space and measure the temperature of the smoking article  30  inserted into the smoking space. The number of temperature sensors  20 , the shape of temperature sensors  20 , positions at which temperature sensors  20  are disposed, intervals at which temperature sensors  20  are disposed, etc. may be designed in various ways and may vary according to the embodiment. 
     As illustrated in  FIG.  1   , the temperature sensor  20  may be disposed to measure the temperature near a downstream end of the smoking material portion. In this case, whether smoking has ended may be accurately determined using only the temperature sensor  20  without an additional monitoring module. This may be understood as using the fact that smoking usually ends upon complete combustion of the smoking material portion. For example, the controller  18  may determine that smoking has ended when the temperature measured by the temperature sensor  20  is equal to or higher than a reference value (e.g., when the current smoking position reaches the downstream end of the smoking material portion) or when the temperature measured by the temperature sensor  20  increases and then decreases to less than the reference value (e.g., when combustion power weakens at the downstream end of the smoking material portion). 
     In some other embodiments, a plurality of temperature sensors  20  may be disposed at different positions inside the smoking space. For example, as illustrated in  FIG.  2   , a plurality of temperature sensors  20 - 1  and  20 - 2  may be disposed in the longitudinal direction of the smoking article  30 . Alternatively, the plurality of temperature sensors  20  may be disposed at positions facing each other.  FIG.  2    illustrates an example in which the two temperature sensors  20 - 1  and  20 - 2  are disposed, but the number of temperature sensors  20  may also be three or more. Here, the intervals at which the temperature sensors  20  are disposed may be the same or different. When the plurality of temperature sensors  20  are used, smoking progress (e.g., the extent to which the smoking article  30  is smoked) may be more accurately monitored, and various pieces of monitoring information may be obtained as follows. 
     In some examples, the start of smoking may be detected (determined) through the temperature sensor (e.g.,  20 - 2 ) disposed near the upstream end of the smoking material portion. For example, the controller  18  may determine that smoking has started when the temperature measured by the temperature sensor (e.g.,  20 - 2 ) is equal to or higher than a reference value. 
     In some examples, temperatures measured by the plurality of temperature sensors (e.g.,  20 - 1  and  20 - 2 ) disposed in the longitudinal direction may be compared to determine the extent to which the smoking article  30  is smoked (e.g., the current smoking (combustion) position). This example will be described in more detail below with reference to  FIGS.  12  and  13   . 
     In some examples, the plurality of temperature sensors  20  may be disposed at positions facing each other with the inserted smoking article  30  positioned in between or may be disposed along the circumferential direction of the smoking article  30  inside the smoking space (for example, four temperature sensors  20  may be disposed at 90° intervals). In this case, temperatures measured by the plurality of temperature sensors  20  may be compared to determine the extent to which the smoking article  30  is tilted (e.g., shaken). For example, when a temperature measured by a specific temperature sensor is higher than a temperature measured by another temperature sensor, the controller  18  may determine that the inserted smoking article  30  is tilted in a direction toward the specific temperature sensor. Alternatively, when temperatures measured by the plurality of temperature sensors  20  fluctuate by a reference value or more, the controller  18  may determine that the inserted smoking article  30  is shaking. 
     In still some other embodiments, a temperature sensor  20  having an elongated body may be disposed in the smoking space. For example, the elongated temperature sensor  20  may be disposed in the longitudinal direction of the smoking article  30 . The temperature sensor  20  according to the present embodiment may be implemented so that a first portion of the elongated body measures the temperature of a first corresponding portion of the smoking material portion constituting the smoking article  30 , and a second portion measures the temperature of a second corresponding portion of the smoking material portion. A specific implementation method may vary. In this case, smoking progress may be monitored on the basis of a temperature measured by a specific portion of the elongated body. For example, the controller  18  may compare temperatures measured by different portions of the elongated body and determine the extent to which the smoking article  30  is smoked. 
     In yet some other embodiments, the temperature sensor  20  may be disposed on the basis of combinations of the above-described embodiments. 
     Next, the ignition portion  15  may be disposed inside the smoking space and ignite the smoking article  30  inserted into the smoking space. The ignition portion  15  may be controlled by the controller  18  or may perform an ignition function due to manual operation by a user. The number of ignition portions  15 , the shape of ignition portions  15 , the arrangement form thereof, etc. may be designed in various ways and may vary according to the embodiment. 
     In some embodiments, the ignition portion  15  may be disposed at a fixed position. Specifically, as illustrated in  FIG.  1    and so on, the ignition portion  15  may be disposed to ignite the vicinity of the upstream end of the inserted smoking article  30 . In this case, the structure of the sidestream smoke removal device  1  may be simplified, and thus a defect rate during manufacture may be minimized. 
     In some other embodiments, the ignition portion  15  may be designed and implemented to be movable. A specific implementation method may vary. For example, the ignition portion  15  may be implemented to move in the longitudinal direction due to manual operation by a user or control by the controller  18 . In some examples, the controller  18  may, in response to detecting the insertion of the smoking article  30 , move the ignition portion  15  to the upstream end of the smoking article  30 . According to the present embodiment, since it becomes possible to universally apply the sidestream smoke removal device  1  to smoking articles of various lengths, the usability of the sidestream smoke removal device  1  may be significantly improved. 
     Next, the sidestream smoke processing portion  16  may be disposed inside the smoking space and perform various processes for sidestream smoke generated from the inserted smoking article  30 . For example, the sidestream smoke processing portion  16  may be disposed between the inserted smoking article  30  and the back cover  13  and perform a purification function for the sidestream smoke. Also, the sidestream smoke processing portion  16  may further perform an exhaust function that allows the purified sidestream smoke to be easily discharged to the outside. However, a detailed structure and an operation method of the sidestream smoke processing portion  16  may be designed in various ways and may vary according to the embodiment. 
     In some embodiments, as illustrated, the sidestream smoke processing portion  16  may be configured to include a filter structure  161  and an exhaust fan  162 . The filter structure  161  may perform a purification function for the sidestream smoke, and the exhaust fan  162  may perform an exhaust function for the sidestream smoke. For example, the exhaust fan  162  may suction the sidestream smoke toward the filter structure  161  through rotation and allow the sidestream smoke that has passed through the filter structure  161  to be smoothly discharged to the outside. The operation of the exhaust fan  162  may be controlled by the controller  18 . This will be described below with reference to  FIG.  11    and so on. 
     Next, the mesh  17  may be disposed between the sidestream smoke processing portion  16  and the back cover  13  and serve as a safety net. For example, the mesh  17  may prevent a specific object (e.g., some pieces of the filter portion  161 , etc.) inside the smoking space from being detached toward the back cover  13 . 
     Next, the display  19  may be disposed on an outer surface of the housing  11  to display various pieces of information according to control by the controller  18 . For example, the display  19  may display smoking progress information, device information, smoking history information, user information, and the like. Here, examples of the smoking progress information may include information on smoking progress (e.g., any information related to smoking progress such as the extent to which the smoking article  30  is smoked, the current smoking position, the number of remaining puffs, smoking time, remaining smoking time, etc.) and puff information (e.g., any information related to puff events such as a puff number, a puff length, a puff interval, a puff intensity, whether puffs are performed, etc.), but the smoking progress information is not limited thereto. Examples of the device information may include information such as a power state, whether a failure has occurred, and a battery state (e.g., a battery level, whether charging is needed, etc.), but the device information is not limited thereto. The smoking history information may include the cumulative number of cigarettes smoked but is not limited thereto. 
     The display  19  may include a visual display means such as a light emitting diode (LED) display and thus visually display the various pieces of information. However, a specific display means may vary. 
     Next, the controller  18  may control the overall operation of the sidestream smoke removal device  1 . For example, the controller  18  may control the operation of the exhaust fan  162 , control the operation of the display  19 , and also control the operation of other components included in the sidestream smoke removal device  1 . In addition, the controller  18  may determine smoking progress of the smoking article  30  and may check a state of each of the components of the sidestream smoke removal device  1  to determine whether the sidestream smoke removal device  1  is in an operable state. A specific operation method of the controller  18  will be described in detail below with reference to  FIGS.  11  to  13   . 
     The controller  18  may be implemented with at least one processor. The processor may also be implemented with an array of a plurality of logic gates or implemented with a combination of a general-purpose microprocessor and a memory which stores a program that may be executed by the microprocessor. Also, those of ordinary skill in the art to which the present disclosure pertains should clearly understand that the controller  18  may also be implemented with other forms of hardware. 
       FIG.  1    illustrates the controller  18  as being disposed outside the housing  11  of the sidestream smoke removal device  1 , but this is only for convenience of understanding, and the position at which the controller  18  is disposed may vary. For example, in order to prevent a failure due to external impact, the controller  18  may be disposed at a specific position inside the housing  11 . 
     Meanwhile, in some embodiments of the present disclosure, the sidestream smoke removal device  1  may further include a module configured to provide aural and/or tactual outputs. For example, the sidestream smoke removal device  1  may further include a speaker, a vibration module, etc. In this case, the controller  18  may further use these modules to provide various pieces of information to the user. 
     Also, in some embodiments of the present disclosure, as illustrated in  FIG.  3   , the sidestream smoke removal device  1  may include an elastic support portion  21  disposed to elastically support the upstream end of the inserted smoking article  30 . The elastic support portion  21  may include an elastic body that is able to stretch and contract, such as a spring, and may be disposed to be contracted in a direction of insertion of the smoking article  30  as the smoking article  30  is inserted. For example, the elastic support portion  21  may be disposed in the longitudinal direction inside the smoking space and may be contracted in the direction of insertion due to an insertion force of the smoking article  30 , thus supporting the smoking article  30 . Accordingly, support stability and ignition stability for the smoking article  30  may be improved. 
     In the previous embodiments, as illustrated, the ignition portion  15  may be coupled to the elastic support portion  21  and may be disposed to come in close contact with the upstream end of the smoking article  30  as the smoking article  30  is inserted. In this case, since the ignition portion  15  performs an ignition function while supporting the upstream end of the smoking article  30  together with the elastic support portion  21 , ignition stability may be further improved, and ignition performance may also be improved. In this example, a portion of the ignition portion  15  that comes in close contact with the upstream end of the smoking article  30  may be formed in a sharp protruding shape (e.g., the shape of a needle). In this case, since at least a portion of the ignition portion  15  passes through the upstream end of the smoking article  30  as the smoking article  30  is inserted, the smoking article  30  may be supported more stably at the time of ignition, and accordingly, the support stability and ignition stability of the sidestream smoke removal device  1  may be further improved. 
     Also, in some embodiments of the present disclosure, as illustrated in  FIG.  4   , a support portion  22  configured to support a side surface of the smoking article  30  may be further disposed inside the smoking space of the sidestream smoke removal device  1 . For example, as illustrated, a plurality of support portions  22  may be disposed to support a side surface at a first point and a side surface at a second point of the smoking article  30 . In order to support a specific point of the smoking article  30 , a plurality of support portions  22  may be disposed in the circumferential direction of the smoking article  30  (for example, four support portions  22  may be disposed at 90° intervals), or a single support portion  22  formed in a ring shape may be disposed. In this way, the number of support portions  22 , the arrangement form thereof, the shape thereof, etc. may be designed and implemented in various ways. 
     Also, in some embodiments of the present disclosure, the sidestream smoke removal device  1  may further include a cutting portion  23  (see  FIG.  5   ). By cutting the smoking article  30 , which is undergoing combustion, to prevent further combustion, the cutting portion  23  may provide a convenient, safe extinguishing function at a point in time desired by the user and may minimize the risk of burns that may occur due to carelessness of the user (e.g., the risk of burns due to carelessness when directly extinguishing the smoking article  30 ) and the risk of fire. The present embodiment will be described in more detail below with reference to  FIG.  5    and so on. 
     The structure of the sidestream smoke removal device  1  according to some embodiments of the present disclosure and some modifications thereof have been described above with reference to  FIGS.  1  to  4   . According to the above description, smoking progress information may be provided through the plurality of temperature sensors  20  and the display  19 , and the support stability and ignition stability for the smoking article  30  may be improved through the elastic support portion  22  and/or the support portion  23 . Accordingly, ease of use of the sidestream smoke removal device  1  may be improved, and the user&#39;s satisfaction may be enhanced. 
     Hereinafter, the sidestream smoke removal device  1  having an extinguishing function according to some embodiments of the present disclosure will be described in detail with reference to  FIG.  5    and so on. However, for clarity of the present disclosure, description of contents overlapping with those related to  FIGS.  1  to  4    will be omitted. 
       FIG.  5    is an exemplary view for describing the sidestream smoke removal device  1  having an extinguishing function according to some embodiments of the present disclosure. 
     As illustrated in  FIG.  5   , the sidestream smoke removal device  1  may include the cutting portion  23  configured to provide an extinguishing function by cutting the inserted smoking article  30 . However, the arrangement form, operation method, and/or cutting structure of the cutting portion  23  may be designed in various ways. 
     First, the arrangement form of the cutting portion  23  may be designed in various ways as follows. 
     In some examples, the cutting portion  23  may be disposed at a fixed position and configured to cut a particular portion of the inserted smoking article  30 . For example, the cutting portion  23  may be disposed to be fixed at a position where the cutting portion  23  is able to cut between the filter portion and the smoking material portion. In this case, regardless of the current smoking (i.e., combustion) position of the smoking article  30 , a safe extinguishing function may be ensured, and the structure of the sidestream smoke removal device  1  may be simplified. 
     In some other examples, the cutting portion  23  may be configured to be movable. For example, the cutting portion  23  may be configured to move due to an external force (i.e., manual operation) by the user or may be configured to move due to control by the controller  18 . As a more specific example, due to the controller  18 , the cutting portion  23  may automatically move to the vicinity of the current smoking (i.e., combustion) position of the smoking article  30 . Refer to description of  FIG.  13    below for description of a method by which the controller  18  determines the current smoking (i.e., combustion) position of the smoking article  30 . 
     Next, the operation method of the cutting portion  23  may also be designed in various ways as follows. 
     Also, in some examples, as illustrated in  FIG.  6   , a push-type button  24  may be disposed on an outer surface of the housing  11 . Also, the cutting portion  23  may be configured to operate as an external force F is applied to the push-type button  24  (that is, as the user pushes the button  24 ). For example, the cutting portion  23  may be mechanically linked to the push-type button  24  and thus configured to cut the smoking article  30  due to the external force F applied to the push-type button  24 . Alternatively, the cutting portion  23  may be electrically linked to the controller  18 , and the controller  18  may operate the cutting portion  23  in response to the external force F applied to the push-type button  24 . 
     In some other examples, as illustrated in  FIG.  7   , the cutting portion  23  may be configured to operate as an external force F twisting the housing  11  is applied to the housing  11 . For example, the cutting portion  23  may be mechanically linked to the housing  11  and thus configured to cut the smoking article  30  due to the external force F twisting the housing  11  (e.g., when the user holds the housing  11  with both hands and turns the two ends of the housing  11  in opposite directions). Alternatively, the cutting portion  23  may be electrically linked to the controller  18 , and the controller  18  may operate the cutting portion  23  in response to the twisting external force F. 
     In still some other examples, as illustrated in  FIG.  8   , the cutting portion  23  may be configured to operate as an external force F 1  or F 2  stretching or contracting the housing  11  is applied to the housing  11 . For example, the cutting portion  23  may be mechanically linked to the housing  11  such that it cuts the smoking article  30  due to the external force F 1  stretching the housing  11  (e.g., when the user holds the housing  11  with both hands and pulls the two ends of the housing  11  in opposite directions) or due to the external force F 2  contracting the housing  11  (e.g., when the user holds the housing  11  with both hands and pushes the two ends of the housing  11  in opposite directions). Alternatively, the cutting portion  23  may be electrically linked to the controller  18 , and the controller  18  may operate the cutting portion  23  in response to the stretching external force F 1  or the contracting external force F 2 . 
     Next, the cutting structure of the cutting portion  23  may also be designed in various ways as follows. 
     In some examples, as illustrated in  FIG.  9   , a cutting portion  23 - 1  may include a plurality of cutting blades  231  and  232  and may include an opening formed in the vicinity of the center to allow the smoking article  30  to pass therethrough. For example, the cutting portion  23 - 1  may be designed so that, as the smoking article  30  is inserted into the smoking space, the smoking article  30  passes through the opening of the cutting portion  23 - 1 . Also, the cutting portion  23 - 1  may be configured to cut the smoking article  30  as the plurality of cutting blades  231  and  232 , which have been open, close. The plurality of cutting blades  231  and  232  may be disposed along the circumferential direction of the opening (e.g., clockwise or counterclockwise), and the number of cutting blades  231  and  232  may vary. Such a cutting structure of the cutting portion  23 - 1  may be understood as being similar to a foldable structure of a foldable steamer basket. 
     In some other examples, as illustrated in  FIG.  10   , a cutting portion  23 - 2  may include a plurality of cutting blades  231  and  232  and may include an opening formed in the vicinity of the center to allow the smoking article  30  to pass therethrough. For example, the cutting portion  23 - 2  may be designed so that, as the smoking article  30  is inserted into the smoking space, the smoking article  30  passes through the opening of the cutting portion  23 - 2 . Also, the cutting portion  23 - 2  may be configured to cut the smoking article  30  as the plurality of cutting blades  233  and  234  move in a direction reducing the opening (that is, a direction reducing the size of the opening). The plurality of cutting blades  233  and  234  may be disposed in the circumferential direction of the opening (e.g., clockwise or counterclockwise) and may be designed so that an overlapping region between the plurality of cutting blades  233  and  234  increases as the plurality of cutting blades  233  and  234  move in the direction reducing the opening. The number of cutting blades  233  and  234  may vary. Such a cutting structure of the cutting portion  23 - 2  may be understood as being similar to a structure of the aperture of a camera. 
     In still some other examples, the cutting portion  23  may have a cutting structure different from those described above. 
     Various examples described above may be combined in various forms in order to implement the cutting portion  23 . For example, the cutting portion  23  may be implemented to operate as described with reference to  FIG.  7   , have the cutting structure illustrated in  FIG.  9   , and be movable due to manual operation by the user. 
     The sidestream smoke removal device  1  having an extinguishing function according to some embodiments of the present disclosure has been described above with reference to  FIGS.  5  to  10   . According to the above description, due to the cutting portion  23  serving as an extinguisher, the user may be able to extinguish a cigarette easily and safely at any time. Also, the risk of burns that may occur due to carelessness of the user (e.g., the risk of burns due to carelessness when directly extinguishing the smoking article) and the risk of fire may be minimized. Accordingly, the ease of use and safety of the sidestream smoke removal device  1  may be significantly improved. 
     Hereinafter, a control method according to some embodiments of the present disclosure will be described with reference to  FIG.  11    and so on. 
     Each step of the control method which will be described below may be performed by the controller (e.g.,  18 ) of the sidestream smoke removal device (e.g.,  1 ). Also, each step of the control method may be implemented with one or more instructions executed by the controller. The control method is applicable to various types of sidestream smoke removal devices, but for convenience of understanding, description will be continued assuming that the control method is performed by the sidestream smoke removal device  1  illustrated in  FIGS.  1  to  10   . Therefore, in the following description, when the subject of a specific operation is omitted, the specific operation may be understood as being performed by the controller  18  of the illustrated device  1 . 
       FIG.  11    is an exemplary flowchart showing a control method according to some embodiments of the present disclosure. However, this is only a preferred embodiment for achieving the objectives of the present disclosure, and, of course, some steps may be added or omitted as necessary. 
     As illustrated in  FIG.  11   , the control method may begin by detecting the start of smoking (S 10 ). In this step, a method of detecting the start of smoking may vary. 
     In some embodiments, the controller  18  may detect the start of smoking through a user input (e.g., an input on a button, etc.) operating the ignition portion  15 . Alternatively, the controller  18  may recognize the start of smoking through a user input (e.g., an input on a button, etc.) requesting to start smoking and may operate the ignition portion  15 . 
     In some other embodiments, the controller  18  may detect the start of smoking in response to determining that a temperature measured by the temperature sensor  20  is equal to or higher than a reference value. Here, for example, the temperature sensor  20  may be disposed to measure the temperature near the upstream end of the smoking article  30  inside the smoking space. 
     In step S 20 , in response to detecting the start of smoking, the controller  18  may open (e.g., partially open or completely open) the vent  111 . This is because outside air that enters through the vent  111  may promote combustion of the smoking article  30 . Also, the controller  18  may operate the exhaust fan  162 . This is because, as the exhaust fan  162  operates, sidestream smoke generated during smoking may be smoothly exhausted. 
     Meanwhile, according to some embodiments of the present disclosure, the controller  18  may perform control of the vent  111  and the exhaust fan  162  on the basis of puff events of the user during smoking. However, a specific control method thereof may vary. 
     In some examples, the controller  18  may adjust a degree of opening/closing of the vent  111  on the basis of puff events. Specifically, the controller  18  may make the vent  111  more open when puffs are performed and make the vent  111  less open when puffs are not performed. In this case, outside air may more smoothly enter while puffs are performed, and thus combustion of the smoking article  30  may be further promoted. Also, a problem in that unpurified sidestream smoke leaks through the vent  111  while puffs are not performed may be alleviated. For reference, while puffs are performed, since a lot of sidestream smoke is not generated and an air flow path through which gas enters is formed through the vent  111 , leaking of sidestream smoke may not occur even when the vent  111  is opened. 
     In some other examples, the controller  18  may operate (i.e., rotate) the exhaust fan  162  in a reverse direction while puffs are performed and may operate (i.e., rotate) the exhaust fan  162  in a forward direction while puffs are not performed. Here, the forward direction may refer to a rotational direction that causes sidestream smoke to be suctioned toward the filter structure  161 , and the reverse direction may refer to the opposite rotational direction. In this case, while puffs are performed, an air flow may be concentrated toward the upstream end of the smoking article  30  and combustion may be promoted, and while puffs are not performed, sidestream smoke may be suctioned toward the filter structure  161  and smoothly exhausted. 
     In still some other examples, the controller  18  may adjust the degree of opening/closing of the vent  111  and/or the rotational speed of the exhaust fan  162  on the basis of information on puff events (e.g., a puff intensity, a puff interval, a puff length, etc.). For example, in a case in which the puff intensity increases, the puff length increases, or the puff interval decreases, the controller  18  may make the vent  111  more open. In the opposite case, the controller  18  may make the vent  111  less open. This is because the puff intensity is likely to increase when combustion of the smoking article  30  is not smoothly performed. Alternatively, in the case in which the puff intensity increases, the puff length increases, or the puff interval decreases, the controller  18  may increase the rotational speed of the exhaust fan  162  while puffs are performed (that is, increase the rotational speed thereof in the reverse direction). In the opposite case, the controller  18  may decrease the rotational speed of the exhaust fan  162 . 
     In yet some other examples, the controller  18  may perform control on the basis of combinations of the above-described examples. 
     In the previous embodiments, a method by which the controller  18  detects a puff may vary. For example, the controller  18  may detect a puff on the basis of a change in temperature measured by the temperature sensor  20 . Specifically, when a temperature change is equal to or greater than a reference value (e.g., when combustion temperature of the smoking article  30  instantaneously increases), the controller  18  may recognize that a puff is generated. This may be understood as using a phenomenon in which combustion is accelerated at the upstream end of the smoking article  30  while puffs are generated. Also, the controller  18  may determine a puff intensity on the basis of a degree of temperature change. For example, the controller  18  may determine the puff intensity to be higher as the degree of temperature change is higher and determine the puff intensity to be lower as the degree of temperature change is lower. 
     In step S 30 , the controller  18  may detect the end of smoking. In this step, the controller  18  may detect the end of smoking using various methods, and the method may vary according to the embodiment. 
     In some embodiments, the controller  18  may detect the end of smoking on the basis of a temperature measured by the temperature sensor  20 . Here, for example, the temperature sensor  20  may be disposed near the downstream end of the smoking material portion of the smoking article  30 . For example, when the temperature measured by the temperature sensor  20  is equal to or higher than a reference value or the measured temperature increases and then decreases, the controller  18  may determine that smoking has ended. 
     In some other embodiments, the controller  18  may detect the end of smoking on the basis of puff events, the time elapsed after the start of smoking, and the like. For example, when a predetermined amount of time has elapsed after the start of smoking, a puff number is equal to or greater than a reference value, or a puff has not been detected for a predetermined amount of time or more after a previous puff, the controller  18  may determine that smoking has ended. 
     In still some other embodiments, smoking termination conditions may be set. For example, smoking termination conditions may be set on the basis of a puff number, the time elapsed after the start of smoking, and the like. In this case, in response to predetermined smoking termination conditions being satisfied, the controller  18  may determine to end smoking. 
     In step S 40 , in response to detecting the end of smoking, the controller  18  may perform an automatic extinguishing function. In this step, a method by which the controller  18  performs the automatic extinguishing function may vary. 
     In some embodiments, the controller  18  may close the vent  111  and stop operation of the exhaust fan  162 . In this case, since outside air stops entering due to closing of the vent  111 , the smoking article  30  may be naturally extinguished due to lack of oxygen. 
     In some other embodiments, the controller  18  may close the vent  111  and operate the exhaust fan  162  for a predetermined amount of time and then stop the operation or continuously operate the exhaust fan  162 . In this case, since outside air stops entering due to closing of the vent  111 , and inside air is exhausted to the outside through the exhaust fan  162 , the smoking article  30  may be naturally extinguished. 
     In still some other embodiments, the controller  18  may perform the automatic extinguishing function by operating the cutting portion  23 . 
     In yet some other embodiments, the controller  18  may perform the automatic extinguishing function on the basis of combinations of the above-described embodiments. For example, the controller  18  may perform the automatic extinguishing function through a first extinguishing process of closing the vent  111  and stopping operation of the exhaust fan  162  and a second extinguishing process of cutting the inserted smoking article  30  through the cutting portion  23 . Here, the first extinguishing process and the second extinguishing process may be performed in any order. 
     Meanwhile, according to some embodiments of the present disclosure, in response to detecting the end of smoking, the controller  18  may operate the exhaust fan  162  in the forward direction (that is, the suctioning direction) for a predetermined amount of time. In this case, since smoking by-products such as cigarette ash gather near the filter structure  161  due to the exhaust fan  162 , the inside of the sidestream smoke removal device  1  may be cleaned more easily. In some examples, the controller  18  may also adjust the rotational speed of the exhaust fan  162  on the basis of the extent to which the smoking article  30  is burned. For example, when the smoking article  30  is completely burned, since the amount of by-products is large, the controller  18  may rotate the exhaust fan  162  at a higher speed. In the opposite case, the controller  18  may rotate the exhaust fan  162  at a lower speed. The extent to which the smoking article  30  is burned may be determined on the basis of a puff number, the time elapsed after the start of smoking, the current smoking position (see  FIG.  13   ), and the like. 
     The control method according to some embodiments of the present disclosure has been described above with reference to  FIG.  11   . According to the above-described method, since the vent  111  and the exhaust fan  162  may be appropriately controlled according to smoking progress, a user&#39;s satisfaction with the device may be improved. Also, since the automatic extinguishing function is performed upon the end of smoking, the risk of fire and burns due to the user&#39;s carelessness may be minimized. 
     Hereinafter, a control method according to some other embodiments of the present disclosure will be described with reference to  FIG.  12   . However, for clarity of the present disclosure, description of contents overlapping with those related to the control method illustrated in  FIG.  11    will be omitted. 
       FIG.  12    is an exemplary flowchart showing the control method according to some other embodiments of the present disclosure. However, this is only a preferred embodiment for achieving the objectives of the present disclosure, and, of course, some steps may be added or omitted as necessary. 
     As illustrated in  FIG.  12   , the control method may begin by detecting the start of smoking (S 110 ). In this step, the controller  18  may display an indicator indicating the start of smoking on the display  19 . For additional description of this step, refer to step S 10  described above with reference to  FIG.  11   . 
     In step S 120 , the controller  18  may monitor smoking progress. Here, smoking progress may include any situation related to smoking such as the extent to which the smoking article  30  is smoked, puff events, and the like. 
     In some embodiments, the controller  18  may compare temperatures measured by a plurality of temperature sensors  20  disposed at different positions to accurately determine the extent to which the smoking article  30  is smoked (or the current smoking (i.e., combustion) position thereof). Specifically, let&#39;s assume that, as illustrated in  FIG.  13   , a plurality of temperature sensors  20 - 1 ,  20 - 2 , and  20 - 3  are disposed in the longitudinal direction in the smoking space of the sidestream smoke removal device  1 . Then, the controller  18  may compare temperatures measured by a first temperature sensor  20 - 1 , a second temperature sensor  20 - 2 , and a third temperature sensor  20 - 3  to determine the current smoking position of the smoking article  30  and the extent to which the smoking article  30  is smoked. For example, in a case in which the temperature measured by the first temperature sensor  20 - 1  is the lowest, the temperature measured by the second temperature sensor  20 - 2  is lower than the temperature measured by the third temperature sensor  20 - 3 , and the temperature measured by the third temperature sensor  20 - 3  is the highest, the controller  18  may determine that the current smoking position of the smoking article  30  is between the second temperature sensor  20 - 2  and the third temperature sensor  20 - 3  and closer to the third temperature sensor  20 - 3 . Here, the controller  18  may determine that the larger the temperature difference between the second temperature sensor  20 - 2  and the third temperature sensor  20 - 3 , the closer the current smoking position of the smoking article  30  is to the third temperature sensor  20 - 3 . 
     In step S 130 , the controller  18  may display monitoring information through the display  19 . However, types of monitoring information and a specific display method therefor may vary. 
     In some embodiments, the controller  18  may display, through the display  19 , information related to the extent to which the smoking article  30  is smoked. For example, the controller  18  may display an indicator (e.g., a cigarette-shaped object) indicating the smoking article  30  (or the extent to which the smoking article  30  is smoked) and may control the display  19  to reduce the length of the indicator as smoking is performed. As another example, the controller  18  may display, through the display  19 , a display area (e.g., LED lighting areas/sections) indicating the extent to which the smoking article  30  is smoked and may control the display  19  to change the size of the display area (e.g., the number of LED lighting areas/sections) as smoking is performed. Here, the size of the display area may increase or decrease as smoking is performed. 
     In some other embodiments, the controller  18  may display information related to puff events through the display  19 . For example, the controller  18  may display a puff number. As another example, the controller  18  may, in response to detecting puffs, display an indicator indicating that puffs are being performed. 
     In step S 140 , the controller  18  may detect the end of smoking. In this step, the controller  18  may display an indicator indicating the end of smoking through the display  19 . For additional description of this step, refer to step S 40  described above with reference to  FIG.  11   . 
     Meanwhile, the controller  18  may perform the automatic extinguishing function upon detecting the end of smoking, may display an indicator indicating automatic extinguishing through the display  19 , and may also display an indicator indicating the completion of automatic extinguishing upon completion of automatic extinguishing. 
     The control method according to some other embodiments of the present disclosure has been described above with reference to  FIGS.  12  and  13   . According to the above-described method, smoking progress information may be displayed through the display  19 . Accordingly, since the user may check smoking progress in real time through the display  19 , the ease of use of the sidestream smoke removal device  1  may be significantly improved. 
     The technical spirit of the present disclosure described above with reference to  FIGS.  1  to  13    may at least partially be implemented with computer-readable code on computer-readable recording media. Examples of the computer-readable recording media may include removable recording media (a compact disc (CD), a digital versatile disc (DVD), a Blu-Ray disk, a universal serial bus (USB) storage device, a removable hard disk) or non-removable recording media (a read-only memory (ROM), a random access memory (RAM), a built-in hard disk). Computer programs recorded in the computer-readable recording media may be sent to other computing devices through a network, such as the Internet, and installed in the other computing devices so as to be used in the other computing devices. 
     All the components constituting the embodiments of the present disclosure have been described above as being combined into one body or being operated in combination, but the technical spirit of the present disclosure is not necessarily limited to the embodiments. That is, any one or more of the components may be selectively operated in combination within the intended scope of the present disclosure. 
     Operations are illustrated in a specific order in the drawings, but it should not be understood that the operations must be performed in a specific order or sequential order shown, or that all illustrated operations must be performed to obtain a desired result. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of various components in the embodiments described above should not be understood as necessarily requiring such separation, and it should be understood that the program components and systems described may generally be integrated together into a single software product or packaged into multiple software products. 
     The embodiments of the present disclosure have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present disclosure pertains should understand that the present disclosure may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, the embodiments described above should be understood as being illustrative, instead of limiting, in all aspects. The scope of the present disclosure should be interpreted by the claims below, and any technical spirit within the scope equivalent to the claims should be interpreted as falling within the scope of the technical spirit defined by the present disclosure.