Heating smoking set

Abstract

The utility model belongs to the technical field of electric smoking devices, and particularly provides a heating smoking set. The radial outer side of a containing cavity of the heating smoking set is provided with a heating cavity, the heating cavity is provided with an air inlet communicated with outside air, a second heating element used for heating the air in the heating cavity is arranged in the heating cavity, and the peripheral side of the containing cavity is provided with communicating holes communicated with the heating cavity so that the heated air can enter the containing cavity. The projection of the communicating hole in the radial direction of the containing cavity is located on the 1 / 2 side, close to the insertion end, of the first heating element. According to the utility model, the hot air can be quickly and accurately directly blown to the lower-temperature part of the heating element for internal heating by changing the air inlet position of the hot air into the accommodating cavity, so that residual chemical components in tobacco materials can be fully released in the later period of smoking.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric smoking devices, and particularly relates to a heating smoking device. Background Art

[0002] A heated cigarette refers to a cigarette that directly heats a tobacco core through a heating smoking device, enabling the tobacco core to undergo processes such as pyrolysis, distillation, and condensation to produce an aerosol for consumers to inhale. During the inhalation process of a heated cigarette, there is no combustion, and it generates fewer harmful components compared to traditional cigarettes during inhalation.

[0003] A heated cigarette includes a tobacco material section, a temperature reduction section, and a filter section. The heating smoking device is provided with a receiving cavity. During inhalation, the cigarette is inserted into the receiving cavity and heated in the receiving cavity. Currently, heating smoking devices usually use a single heating method to heat the tobacco core, and common methods include an internal heating method. The internal heating method is to arrange a heating element (heating rod) inside the receiving cavity. After the cigarette is inserted into the receiving cavity, the heating element is inserted into the center of the tobacco material section to heat the cigarette from the inside out.

[0004] To prevent the heating element from squeezing the tobacco material in the center of the tobacco material section into the temperature reduction section, generally, the length of the heating element is shorter than the length of the tobacco material section, and there is a small section of tobacco material that cannot directly contact the heating element. In addition, there are temperature differences at different positions in the length direction of the heating element. The actual measurement results show that the temperature is lower from the middle 1 / 2 of the heating element to the tip position, especially the tip position has the lowest temperature. Considering the above two factors, when the existing heating smoking device with the internal heating method is in use, in the later stage of inhalation, the chemical components in the tobacco material are difficult to be released completely, affecting the consumer's inhalation experience.

[0005] The patent application with the application publication number CN110353317A discloses a heating smoking device, which includes two axially arranged heating cavities. The first heating cavity is a receiving cavity for inserting a cigarette, and a first heating element is provided in the center of the first heating cavity, and the first heating element can be inserted into the interior of the cigarette. The second heating cavity is separated from the first heating cavity by a bottom plate. A second heating element is provided inside the second heating cavity. The bottom plate is provided with communication holes for air flow to pass through, and the second heating cavity is provided with air holes communicating with the outside. As the consumer inhales, a negative pressure can be generated in the second heating cavity, and external air enters the second heating cavity, is heated to a relatively high temperature by the second heating element, and enters the first heating cavity through the communication holes, thereby heating the cigarette.

[0006] The above patent application discloses a heating smoking device that uses two heating methods: internal heating and air heating. However, when consumers use this heating smoking device to suck cigarettes, hot air enters from one end of the tobacco material section of the cigarette and flows towards the filter tip. During the flow of hot air, the tobacco material absorbs the heat of the air, and the temperature of the hot air gradually decreases. At this time, the problem that the chemical components of the tobacco material in the rear section are not completely released cannot be well solved. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a heating smoking device to solve the technical problem that the chemical components of the tobacco material in the rear section are not completely released in the prior art.

[0008] To achieve the above purpose, the technical solution of the heating smoking device provided by the present utility model is as follows:

[0009] A heating smoking device, which has a receiving cylinder. The inner cavity of the receiving cylinder forms a receiving cavity for inserting a cigarette. A first heating element for inserting into the tobacco material section of the cigarette is arranged inside the receiving cavity. One end of the first heating element is an insertion end. A heating cavity is arranged on the radial outer side of the receiving cavity. The heating cavity is provided with an air inlet hole communicating with the outside air. A second heating element for heating the air inside the heating cavity is arranged inside the heating cavity. A communication hole communicating with the heating cavity for the heated air to enter the receiving cavity is arranged on the circumferential side of the receiving cavity. The projection of the communication hole in the radial direction of the receiving cavity is located on the 1 / 2 side close to the insertion end of the first heating element.

[0010] As a further improvement, the communication hole is arranged facing the insertion end.

[0011] As a further improvement, the second heating element is arranged facing the communication hole.

[0012] As a further improvement, a support rod is arranged inside the receiving cavity, and the second heating element is a heating wire wound around the support rod.

[0013] As a further improvement, a plurality of communication holes are evenly distributed along the circumferential direction of the receiving cavity.

[0014] As a further improvement, the heating smoking device further includes a control module, and the control module is communicatively connected to the first heating element and the second heating element to respectively control the on-off of the first heating element and the second heating element.

[0015] As a further improvement, the receiving cylinder is nested inside a spacer of the heating smoking device. The spacer includes a cylindrical main body and an annular limiting plate. The outer edge of the limiting plate is connected to the main body, and the inner edge is connected to a limiting cylinder arranged coaxially with the main body. The inner hole of the limiting cylinder is smaller than the inner hole of the main body, and the outer peripheral surfaces of the limiting cylinder and the receiving cylinder are in close fit. The space between the spacer and the receiving cylinder forms the heating cavity.

[0016] As a further improvement, a first heat insulation member is provided inside the isolation member. The first heat insulation member includes a cylindrical heat insulation portion and a partition ring located at one end of the heat insulation portion. The partition ring is in close fit with the outer peripheral surface of the receiving cylinder, and the heat insulation portion is in close fit with the inner wall of the main body of the isolation member. The partition ring is located on the side of the communication hole close to the mouth of the receiving cylinder. The heating cavity is located on one axial side of the partition ring, and an air inlet cavity is formed between the other axial side of the partition ring and the main body and the limiting portion of the isolation member. The partition ring is provided with air passing holes for communicating the air inlet cavity and the heating cavity.

[0017] As a further improvement, the second heating element is arranged opposite to the air passing holes.

[0018] As a further improvement, a groove is provided at the connection position between the limiting plate and the limiting cylinder. The groove depth in the radial direction is greater than the wall thickness of the limiting cylinder, the length of the groove in the axial direction is greater than the thickness of the limiting plate, and one end of the groove penetrates the outer end face of the limiting plate to form a channel for external air to enter the air inlet cavity. This channel constitutes the air inlet hole, and the end face of the limiting cylinder corresponding to the groove position forms a blocking surface for blocking pollutants.

[0019] The beneficial effects are as follows: Specifically, after the heated cigarette is inserted into the receiving cavity, the first heating element can be inserted into the cigarette, thereby heating the cigarette from the inside out. At the same time, the heated cigarette is also provided with a heating cavity. After the external air enters the heating cavity from the air inlet hole, the second heating element can heat the air, and the heated hot air can enter the receiving cavity through the annular air gap or the communication hole. Compared with the prior art, the communication hole connecting the receiving cavity and the heating cavity is located on the 1 / 2 side of the first heating element close to the insertion end. Then, the heated high-temperature hot air can quickly enter the receiving cavity and heat from more than half of the position of the first heating element. In the height direction (axial direction), the first heating element and the air heating can be continuously coupled, so as to ensure that the tobacco material can still be heated to a relatively high temperature in the later stage of suction, and the tobacco material in the later stage of suction can be completely released. Description of the Drawings

[0020] Figure 1 Schematic diagram of the use of the heating smoking device according to the embodiment of the present invention;

[0021] Figure 2 is Figure 1 Cross-sectional view of the heating part in (omitting the wire);

[0022] Figure 3 is Figure 1 Cross-sectional view of the heating part from another perspective in;

[0023] Figure 4 is Figure 1 Top view of the heating smoking device in.

[0024] Description of reference numerals:

[0025] 1. First heating element; 2. Accommodating cavity; 3. Second thermal insulation member; 4. First thermal insulation member; 5. Heating cavity; 6. Isolation member; 7. Air inlet cavity; 8. Air inlet hole; 9. Shell; 10. Base; 101. Battery; 102. Control module; 11. Cigarette; 111. Tobacco material section; 21. Accommodating cylinder; 22. Connecting hole; 41. Air through hole; 42. Thermal insulation member; 43. Separation ring; 51. Second heating element; 511. Support rod; 512. Wire; 61. Main body; 62. Limit plate; 63. Limit cylinder. DETAILED DESCRIPTION

[0026] In view of the problem that the chemical components of the tobacco material in the rear section of the heating tobacco device using internal heating in the prior art are difficult to be completely released during smoking, the basic technical concept of the utility model is to provide a heating tobacco device with coupled internal heating and air heating. On the basis of keeping the internal heating unchanged, the position of the hot air intake into the accommodating cavity is changed so that the hot air can be quickly and accurately blow directly to the lower temperature part of the heating element of the internal heating, thereby fully releasing the residual chemical components in the tobacco material in the later stage of smoking.

[0027] The present invention is further described in detail below in conjunction with the embodiments.

[0028] The specific embodiment of the heating smoking device provided by the utility model is as follows:

[0029] The heating smoking device provided in this embodiment is used as follows Figure 1 As shown, it includes a shell 9, a separator 6 is provided inside the shell 9, and a receiving tube 21 is provided inside the separator 6. The receiving tube 21 is a circular tube, and the space inside the tube is for inserting a cigarette 11, and forms a receiving chamber 2. The cigarette 11 referred to here is a cigarette for heating cigarettes, specifically including a filter section, a cooling section and a tobacco material section 111, etc. When a consumer smokes a cigarette, the tobacco material section 111 is inserted into the receiving chamber 2. A first heating element 1 is arranged inside the receiving chamber 2, and the first heating element 1 can be inserted into the interior of the tobacco material section 111, and one end thereof is an insertion end. The first heating element 1 can specifically be an electrothermal ceramic material, and the specific heating principle can refer to the prior art, which will not be described in detail here. Preferably, the first heating element 1 should be arranged at the central axis of the receiving chamber 2. A base 10 is also provided inside the shell 9, and a battery 101 for power supply and a control module 102 for controlling the power on and off of the first heating element 1 and the second heating element 51 are provided on the base 10. The control module 102 should be connected to both the external heating element and the air heating element 62 in communication. Naturally, it at least includes a controller, and the communication connection protocol and the controller are prior arts and are not specifically limited.

[0030] like Figures 1-3As shown, radially viewing the accommodation cavity 2, a heating cavity 5 is further provided on the radially outer side of the accommodation cavity 2. The heating cavity 5 is configured with an air inlet hole 8. The air inlet hole 8 connects the heating cavity 5 and the outside air, and the heating cavity 5 is connected to the accommodation cavity 2. When sucking a cigarette, a negative pressure will be generated in the heating cavity 5, and external air can enter the heating cavity 5 from the air inlet hole 8. A second heating element 51 is provided in the heating cavity 5. The second heating element 51 can heat the air in the heating cavity 5 to heat the air to a relatively high temperature (meeting aerosol release). The accommodation cavity 2 is connected to the heating cavity 5. The hot air in the heating cavity 5 can enter the accommodation cavity 2 and heat the cigarette rod 11 in the accommodation cavity 2. Specifically, the accommodation cylinder 21 forming the accommodation cavity 2 is a cylinder continuously extending in the axial direction. A radially penetrating communication hole 22 is provided on the circumferential side of the accommodation cylinder 21. The hot air in the heating cavity 5 can enter the accommodation cavity 2 through the communication hole 22.

[0031] Preferably, a plurality of communication holes 22 are provided, and the plurality of communication holes 22 are circumferentially evenly distributed. At this time, uniform multi-point heating can be formed on the material section of the cigarette rod 11, and the heating effect is better. At the same time, two or more second heating elements 51 can be arranged, and the second heating elements 51 are also circumferentially evenly distributed. At this time, heating at two or more places of the hot air can be formed to ensure that the air temperatures at different positions are uniformly consistent.

[0032] Specifically, the second heating element 51 can adopt a resistance heating wire. A support rod 511 can be provided on the inner wall of the heating cavity 5, and the resistance wire is wound around the support rod 511. In this way, the structure is simple and the reliability is better.

[0033] It should be noted here that in different embodiments, at least one communication hole 22 can be provided. At this time, in order to ensure a larger heating area, an arc-shaped long hole can be provided. Naturally, at least one second heating element 51 can be provided. In addition to the heating wire, in other embodiments, the second heating element 51 can also adopt an element such as a heating rod made of electrothermal ceramic material.

[0034] In this embodiment, the communication hole 22 is located on the 1 / 2 side of the first heating element 1 close to the insertion end (the first heating element 1 is divided into two sections on average, one section is on the side close to the insertion end, and the other section is on the side far from the insertion end). In order to facilitate an accurate understanding of the position of the communication hole 22, the position of the communication hole 22 referred to above refers to the projection of the communication hole 22 in the radial direction of the accommodation cavity 2. In this way, the hot air heated by the second heating element 51 can "directly blow" to a position above the 1 / 2 height of the tobacco material section, ensuring that this position can also be heated to a relatively high temperature so that the chemical components in the tobacco material can be effectively released for consumers to suck.

[0035] Since the temperature at the position of the insertion end of the first heating element 1 is the lowest, and a part of the tobacco material section 111 cannot be directly contacted by the first heating element 1. Optimally, asFigures 1-3 As shown, the communication holes 22 are arranged substantially opposite to the insertion end of the first heating element 1. With this design, hot air can quickly "blow directly" to the insertion end, i.e., the position with the lowest temperature.

[0036] Furthermore, in order to enable the heated air to quickly flow towards the communication holes 22, the second heating element 51 is arranged substantially opposite to the communication holes 22. With this design, the air can be directly and quickly blown towards the section with the lowest temperature of the tobacco material section 111 after being heated by the second heating element 51, shortening the conduction path of the hot air and having a better heating effect. However, in other embodiments, the position of the second heating element 51 can also be slightly offset from the communication holes 22, for example, it can be lower than the position of the communication holes 22.

[0037] When the heating smoking device in this embodiment is in use, the first heating element 1 and the second heating element 51 have a sequential order of turning on or operating. Controlling the turning-on order of the first heating element 1 and the second heating element 51 is achieved through the control module 102, and specifically, it can be manually controlled by the consumer. In the early stage of suction, the first heating element 1 is responsible for directly heating the tobacco material section 111, and at this time, the second heating element 51 does not need to be turned on. It should be noted that the diameter of the receiving cavity 2 is slightly larger than the diameter of the cigarette 11, and there is an air gap for air to pass between the cigarette 11 and the receiving cavity 2. At this time, the communication holes 22 will not affect the normal suction of the consumer. In the later stage of suction, the heating effect of the first heating element 1 has weakened, and at this time, the second heating element 51 can be started, and the hot air directly heats the tobacco material section 111, enabling the complete release of chemical components.

[0038] As Figures 1-3 shown, specifically, the receiving cylinder 21 is nested in the spacer 6, and the spacer 6 mainly functions to insulate heat and maintain the positions of various components. The spacer 6 includes a main body 61, an annular limiting plate 62, and a limiting cylinder 63. The limiting cylinder 63 extends downward, and the limiting cylinder 63 and the receiving cylinder 21 are in close contact and limiting fit. The main body 61 is a cylindrical main body 61. The outer edge of the limiting plate 62 is connected to the main body 61, the limiting cylinder is connected to the inner edge of the limiting plate 62, and is coaxially arranged with the main body 61. The inner hole of the limiting cylinder is smaller than the inner hole of the main body 61, and the inner wall of the limiting cylinder 63 is in close contact and limiting fit with the outer circumference of the receiving cylinder 21. The above-mentioned heating cavity 5 is actually formed by the space or cavity between the spacer 6 and the receiving cylinder 21. It should be noted that the limiting cylinder 63 and the limiting plate 62 can be of an integrally formed structure or can be formed by connecting two separate parts to each other.

[0039] More specifically, a first heat insulation member 4 is also provided in the separator 6. The first heat insulation member 4 includes a heat insulation portion 42 and a partition ring 43. The heat insulation portion 42 is of a cylindrical structure and is closely attached to the inner wall of the main body 61 of the separator 6. The partition ring 43 is located at the end of the heat insulation portion 42. Specifically, the partition ring 43 is located on the side of the communication hole 22 close to the mouth of the receiving cylinder 21 (the mouth for inserting cigarettes). The heating chamber 5 is located on one axial side of the partition ring 43, and the second heating element 51 is located in the heating chamber 5. The partition ring 43 is closely attached and cooperated with the outer peripheral surface of the receiving cylinder 21, and the heat insulation portion 42 is closely attached and cooperated with the inner wall of the main body 61 of the separator 6. An air passing hole 41 is provided on the partition ring 43, and the air passing hole 41 communicates the air chamber and the heating chamber 5. The air entering from the air inlet hole 8 first enters the air inlet chamber 7 and then enters the heating chamber 5 through the air passing hole 41. The function of the first heat insulation member 4 is first to insulate heat and prevent heat from dissipating outward, causing the temperature of the outer shell 9 to be too high during use and affecting the consumer's hand-held experience. At the same time, the first heat insulation member 4 also has a heat preservation function. Under the heat preservation effect of the partition ring 43 and the heat insulation portion 42, the heat in the heating chamber 5 will not dissipate outward excessively, so as to ensure the temperature of the hot air blown into the accommodation chamber 2.

[0040] To ensure that the air entering the heating chamber 5 can be quickly heated, preferably, the position of the air passing hole 41 and the position of the second heating element 51 are also basically opposite to each other, so as to ensure that the air can directly blow to the position of the second heating element 51 and be quickly heated. That is to say, as Figure 4 shown, from a top-down perspective, or rather, the vertical projections of the second heating element 51 and the air passing hole 41 should have an overlapping part.

[0041] In addition to the first heat insulation member 4, in this embodiment, a second heat insulation member 3 is also provided in the heating chamber 5. The second heat insulation member 3 is also of a cylindrical shape, and it is sleeved on the outer periphery of the receiving cylinder 21, and the second heat insulation member 3 is located on the side of the communication hole 22 far from the mouth of the receiving cylinder 21. Adding the second heat insulation member 3 further improves the heat insulation and heat preservation effects.

[0042] Both the first heat insulation member 4 and the second heat insulation member 3 can be made of heat insulation materials commonly used in the prior art.

[0043] Preferably, to facilitate the connection of the wire 512 between the battery 101 and the second heating element 51, as Figure 3 shown, there is a set interval between the first heat insulation member 4 and the second heat insulation member 3 in the radial direction, and the wire 512 passes through this interval. Of course, in other embodiments, the second heat insulation member 3 can also be closely attached to the first heat insulation member 4. In this case, in order to connect the wire 512, a hole can be drilled in the second heat insulation member 3 to pass the wire.

[0044] Furthermore, as Figure 1 and Figure 2As shown, a groove is provided at the connection position of the limit plate 62 and the limit cylinder 63. The groove depth in the radial direction is greater than the wall thickness of the limit cylinder 63, and the length of the groove in the axial direction is greater than the thickness of the limit plate 62, and one end of the groove penetrates the outer end face of the limit plate 62 to form a channel for external air to enter the intake cavity, and this channel is the intake hole 8. Compared with the solution of directly providing air holes at the top or on the side of the separator 6, with this design, while ensuring a relatively large intake channel area, in fact, the orifice of the intake channel extends axially, as Figure 4 shown, the limit cylinder 63 has the function of blocking pollutants. The end face of the limit cylinder 63 corresponding to the groove position constitutes a blocking surface for blocking pollutants, and particulate impurities and other pollutants during use will not easily enter the heating cavity 5, and the protection effect is better.

[0045] In addition, the separator 6 can be made of a material with better heat insulation effect or the thickness of the separator 6 can be appropriately increased. At this time, the first heat insulation member 4 and the second heat insulation member 3 can also be selectively configured or not configured.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating smoking device, characterized in that: The smoking device having a housing tube, the inner cavity of which forms a housing cavity for inserting cigarettes, a first heating element for inserting into a tobacco material section of the cigarette is arranged inside the housing cavity, one end of the first heating element is an insertion end, a heating cavity is arranged on the radial outer side of the housing cavity, the heating cavity is arranged with an air inlet hole for connecting to the outside air, a second heating element for heating the air inside the heating cavity is arranged inside the heating cavity, a connecting hole for connecting to the heating cavity so that the heated air can enter the housing cavity is arranged on the circumferential side of the housing cavity, and the projection of the connecting hole in the radial direction of the housing cavity is located on the 1 / 2 side of the first heating element close to the insertion end.

2. The heating smoking device according to claim 1, characterized in that: The communicating hole is arranged opposite to the insertion end.

3. The heating smoking device according to claim 1 or 2, characterized in that: The second heating element is arranged opposite to the communication hole.

4. The heating smoking device according to claim 1 or 2, characterized in that: A support rod is provided inside the accommodating cavity, and the second heating element is a heating wire wound around the support rod.

5. The heating smoking device according to claim 1 or 2, characterized in that: The communicating holes are evenly distributed in a plurality along the circumference of the accommodating cavity.

6. The heating smoking device according to claim 1 or 2, characterized in that: The heating smoking device further comprises a control module, which is in communication connection with the first heating element and the second heating element so as to control the first heating element and the second heating element to be powered on and off respectively.

7. The heating smoking device according to claim 1 or 2, characterized in that: The accommodating cylinder is nested in the isolating piece of the heating tobacco device, and the isolating piece includes a cylindrical main body and an annular limiting plate. The outer edge of the limiting plate is connected to the main body, and the inner edge is connected to the limiting cylinder coaxially arranged with the main body. The inner hole of the limiting cylinder is smaller than the inner hole of the main body, and the outer circumferential surfaces of the limiting cylinder and the accommodating cylinder are tightly fitted, and the space between the isolating piece and the accommodating cylinder forms the heating chamber.

8. The heating smoking device according to claim 7, characterized in that: A first thermal insulation member is provided in the isolation member, and the first thermal insulation member includes a cylindrical thermal insulation portion and a separation ring located at one end of the thermal insulation portion, the separation ring is tightly fitted with the outer circumferential surface of the accommodating tube, the thermal insulation portion is tightly fitted with the inner wall of the main body of the isolation member, the separation ring is located on the side of the connecting hole close to the tube mouth of the accommodating tube, the heating chamber is located on one axial side of the separation ring, and the other axial side of the separation ring and the main body of the isolation member and the limiting portion form an air intake chamber, and the separation ring is provided with an air hole connecting the air intake chamber and the heating chamber.

9. The heating smoking device according to claim 8, characterized in that: The second heating element is arranged facing the air hole.

10. The heating smoking device according to claim 7, characterized in that: A groove is provided at the connection position of the limit plate and the limit cylinder. The groove depth in the radial direction is greater than the wall thickness of the limit cylinder, the length of the groove in the axial direction is greater than the thickness of the limit plate, and one end of the groove passes through the outer end face of the limit plate to form a channel for external air to enter the air inlet cavity. The channel constitutes the air inlet hole, and the end face of the limit cylinder corresponding to the groove position forms a blocking surface for blocking pollutants.

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