A low-temperature baking smoking device

Abstract

The present invention discloses a low-temperature baking smoking device, including a housing with a heating cavity formed inside for inserting a cigarette; a heating element for heating the cigarette inserted in the heating cavity to generate smoke for the user to inhale; a cleaning plug disposed in the heating cavity corresponding to the insertion end of the cigarette, such that residues generated after heating the cigarette are deposited thereon; and an ejection mechanism for acting on the cleaning plug to eject it from the housing. When cleaning the smoking device of the present invention, the heating cavity of the smoking device is routinely cleaned with a brush. The difficult-to-clean substances generated during the long-term use of the smoking device will only remain on the cleaning plug in contact with the end of the cigarette. By using the ejection mechanism to eject the cleaning plug from the smoking device for replacement or cleaning, thorough cleaning of the heating cavity can be achieved, avoiding the accumulation of residues such as tobacco oil during long-term use, and no major improvement needs to be made to the existing smoking device.

Description

Technical Field

[0001] The present invention belongs to the technical field of smoking articles, and particularly relates to a low-temperature baking smoking device. Background Art

[0002] At present, the electronic smoking devices on the market mainly include two types, such as electronic cigarettes that form inhalable smoke by evaporating e-liquid and low-temperature cigarettes that form inhalable smoke by heating / distilling tobacco materials at a low temperature (150 - 300 degrees). Compared with traditional combustible cigarettes, the working temperature of electronic cigarettes and low-temperature cigarettes is low, and the harmful components in the smoke generated by the e-liquid or low-temperature cigarette sticks used are far less than those of traditional combustible cigarettes. Therefore, using electronic cigarettes or low-temperature cigarettes can greatly avoid the adverse effects of cigarettes on the human body.

[0003] For low-temperature cigarettes that generate inhalable smoke by heating low-temperature cigarette sticks, the heating methods are generally divided into surrounding heating and central heating. Among them, central heating mostly uses a metal sheet or metal rod as the heating element. During use, the heating element is inserted into tobacco materials such as cigarette sticks, and electricity is passed through the metal sheet or metal rod to make it heat up, thereby heating the tobacco materials such as cigarette sticks. Surrounding heating generally uses a heating tube as the heating body. During use, the cigarette stick is inserted into the heating tube, and electricity is passed through to make the heating tube generate heat and heat the cigarette stick.

[0004] For the surrounding heating method, during use, residues are likely to accumulate on the inner wall and bottom of the heating cavity. Especially in the case of long-term use, visible tobacco residues and other substances will be generated at the bottom of the heating cavity. Therefore, how to clean the heating cavity or how to design the cleaning structure of the heating cavity is crucial for low-temperature cigarettes. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. To this end, one of the purposes of the present invention is to provide a low-temperature baking smoking device that can facilitate the cleaning of the heating cavity.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A low-temperature baking smoking device, comprising:

[0008] A housing, internally forming a heating cavity for inserting a cigarette stick;

[0009] A heating element, heating the cigarette stick inserted in the heating cavity to generate smoke for the user to inhale;

[0010] A cleaning plug, arranged at one end of the heating cavity opposite to the insertion end of the cigarette stick, so that the residues generated after the cigarette stick is heated are deposited thereon;

[0011] An ejection mechanism, acting on the cleaning plug to eject it from the housing.

[0012] Further, the ejection mechanism includes a sliding key disposed on the housing, an impact member fixedly connected to the sliding key and facing the cleaning plug, and a return spring. The sliding key can drive the impact member to move towards the cleaning plug under an external force, so as to eject the cleaning plug from the cigarette insertion end of the heating chamber to the outside of the housing and reset under the action of the return spring.

[0013] Further, a heating tube and a heating element fixing frame communicated with the cigarette socket on the housing are installed in the housing. The heating tube is fixedly installed on the heating element fixing frame and is blocked by the heating element fixing frame at the end far from the cigarette socket. The cleaning plug is disposed in the heating tube and is in interference connection with the cleaning plug installation through hole on the heating element fixing frame.

[0014] Further, the ejection mechanism includes a sliding key disposed on the housing, an impact member fixedly connected to the sliding key and facing the cleaning plug installation through hole, and a return spring. The sliding key can drive the impact member to move towards the cleaning plug under an external force, so as to eject the cleaning plug from the cleaning plug installation through hole and reset under the action of the return spring.

[0015] Further, a sliding key fixing piece is provided in the housing. The sliding key is slidably clamped between the housing and the sliding key fixing piece, and the start button on the sliding key is located in the avoidance opening on the side wall of the housing.

[0016] Further, after the cleaning plug is separated from the cleaning plug installation through hole, it is in a free state in the heating tube and can freely slide out from the cigarette socket.

[0017] Further, the cross section of the cleaning plug is T-shaped, and the vertical section of the cleaning plug is in interference connection with the cleaning plug installation through hole.

[0018] For the low-temperature baking smoking device of the above technical solution, a heat insulation member is provided between the heating chamber and the housing. A first air passage is formed between the heat insulation member and the heating chamber. A second air passage is provided on the heating element fixing frame. An air inlet hole is provided at the cigarette socket of the housing. The air inlet hole, the first air passage, the second air passage, the gap between the cleaning plug and the heating tube, and the heating tube are sequentially communicated to form a U-shaped air flow channel.

[0019] Further, the heat insulation member is a vacuum tube.

[0020] Further, a battery and a control board electrically connected to the battery are provided in the housing. The heating element is electrically connected to the control board, and a control button connected to the control board is provided on the housing.

[0021] Further, the housing includes a left half shell and a right half shell that are fastened and fixed to each other. When the left half shell and the right half shell are fastened, the vacuum tube, the battery and the control board are clamped and fixed in the housing.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) When cleaning the smoking device, the heating cavity of the smoking device is routinely cleaned with a brush. The difficult-to-clean substances produced by long-term use of the smoking device will only remain on the cleaning plug that contacts the end of the cigarette. The cleaning plug can be removed from the smoking device through the ejection mechanism and replaced or cleaned to achieve thorough cleaning of the heating cavity, thus avoiding the accumulation of residues such as tobacco oil during long-term use, and there is no need to make major improvements to the existing smoking device.

[0024] 2) The ejection mechanism consists of a sliding key, an impact piece and a return spring. It has a simple structure and adopts a mechanical cleaning solution. It has high application strength, is strong and durable, and has a good touch.

[0025] 3) The interference fit between the heating element fixing frame and the cleaning plug blocks the downward flow of gas, and the gas can only continue to flow in the opposite direction of the gas inflow through the gap between the cleaning plug and the heating element, and flow through the cigarette in the heating chamber to the smoking end of the cigarette, bringing out the smoke. The entire gas flow forms a "U"-shaped return channel rather than a top-down through-channel. Condensation and tar residues produced by the smoke during the smoking process will accumulate on the cleaning plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is generally illustrated Figure 1 ;

[0027] Figure 2 The present invention is generally illustrated Figure 2 ;

[0028] Figure 3 It is a schematic diagram of the airflow direction of the present invention;

[0029] Figure 4 It is an exploded view of the present invention;

[0030] Figure 5 The working state of the sliding key of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 6 The working state of the sliding key of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 7 The working state of the sliding key of the present invention is shown in FIG. Figure 3 ;

[0033] Figure 8 Schematic diagram of the process of the sliding key withdrawing the cleaning plug of the present invention Figure 1 ;

[0034] Figure 9 Schematic diagram of the process of the sliding key withdrawing the cleaning plug of the present invention Figure 2 ;

[0035] Figure 10 Schematic diagram of the process of the sliding key withdrawing the cleaning plug of the present invention Figure 3 ;

[0036] Figure 11 Conventional cleaning diagram of the present invention using a brush;

[0037] Figure 12 Schematic diagram of the engagement and fixation of the cleaning cover and the heating element fixing frame. Specific embodiments

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] See Figures 1-3 , a low-temperature baking smoking device, comprising a housing 1, a heating chamber 2 is formed in the housing 1, and a cigarette holder 3 communicating with the heating chamber 2. The cigarette holder 3 is preferably designed to be coaxial with the heating chamber 2 and match the cigarette, so that the cigarette has a certain resistance when inserted into the cigarette holder 3, which can prevent the cigarette from being thrown out of the smoking device. A heating element 4 is fixedly arranged in the housing 1. The cigarette 5 is composed of a tobacco section containing tobacco material and a filter section. After the cigarette 5 is inserted from the cigarette holder 3, the tobacco section is located in the heating chamber 2, and at least part of the filter section leaks out of the cigarette holder 3 to the outside of the smoking device. The heating element 4 in the housing 1 heats the smoking material to generate the smoke for the user to suck. After being filtered by the filter section, the smoke enters the user's mouth. After the cigarette 5 is used up, the user can hold the exposed section of the cigarette and pull out the cigarette from the heating chamber. A battery 6 electrically connected to the heating element 4 is arranged in the housing 1 to supply power to the heating element when needed. The battery 6 can adopt a lithium-ion battery, a nickel-metal hydride battery or other batteries, and is preferably a rechargeable battery. A control board 7 and a control button 8 are also arranged in the housing 1, and part of the control button 8 leaks out of the opening on the housing 1 to the outside of the housing 1. The heating element 4, the battery 6, the control board 7, and the control button 8 are electrically connected to form a control circuit. As for the specific structure of the control circuit, it is all prior art and will not be elaborated here. When the user uses it, the control button 8 is pushed to the on position, the circuit is turned on, and the battery 6 supplies power to the heating element 4. When the control button 8 is pushed to the off position, the circuit is disconnected, and the heating element 4 stops heating.

[0040] See Figure 1 and Figures 7-12, a cleaning plug 9 is provided inside one end of the heating chamber 2 opposite to the cigarette insertion end. The cleaning plug 9 and the heating chamber 2 are preferably coaxially arranged. After the cigarette 5 is inserted, the bottom end of the cigarette abuts against the cleaning plug 9, so that the residues generated by the smoking material are deposited thereon. In this embodiment, the end face of the cleaning plug 9 abutting against the cigarette 5 is a horizontal plane, and the diameter of this horizontal plane is larger than the diameter of the cigarette 5, so that the condensate and tar residues at the bottom end of the cigarette can be completely deposited thereon. A ejecting mechanism for ejecting the cleaning plug 9 out of the housing 1 is also provided inside the housing 1. When the smoking device needs to be cleaned, the side wall of the heating chamber 2 of the smoking device is cleaned conventionally by the brush 10. The difficult-to-clean substances generated during the long-term use of the smoking device will only remain on the cleaning plug 9 in contact with the end of the cigarette. By using the ejecting mechanism to eject the cleaning plug 9 out of the smoking device for replacement or cleaning, the thorough cleaning of the heating chamber 2 can be realized, the accumulation of residues such as tobacco oil during long-term use is avoided, and no major improvement needs to be made to the existing smoking device. It can be imagined that an installation cavity can be provided on the end face of the cleaning plug 9 facing the cigarette 5, and the bottom end of the cigarette is directly and fittingly inserted into this installation cavity and abuts against the bottom end face of the installation cavity. In this way, after the cigarette 5 is pulled out, the fallen cigarette shreds, tar and other residues are limited in the installation cavity, so as to prevent these residues from falling into the heating chamber 2 and polluting the heating chamber 2. In this embodiment, the cleaning plug 9 needs to be made of a high-temperature resistant material to withstand the heat generated by the heating element 4 and will not generate harmful volatile substances, such as high-temperature resistant silica gel.

[0041] See Figures 4-6, in a preferred embodiment, the present embodiment uses surrounding heating, and the heating element 4 is a heating tube. A heating tube and a heating element fixing frame 11 communicating with the cigarette holder 3 on the housing 1 are installed in the housing 1. The heating element fixing frame 11 is fixedly installed in the housing 1 through a connecting plate. The heating tube is fixedly installed on the heating element fixing frame 11, and the end far from the cigarette holder 3 is blocked by the heating element fixing frame 11. The cleaning plug 9 is arranged in the heating tube and is in interference connection with the cleaning plug installation through hole 12 on the heating element fixing frame 11. The inner cavity of the heating tube becomes the heating cavity. The cleaning plug 9 can be made into various shapes, such as a T-shaped cross-section. During installation, only the cleaning plug 9 needs to be inserted into the heating tube from the cigarette holder 3, and the vertical section of the cleaning plug is snap-fitted in the cleaning plug installation through hole 12 to achieve fixation, and the installation is very convenient. It can be imagined that electromagnetic adsorption or snap-fastening and other fixing methods can also be used. A top cover 13 and a connecting ring 14 are also provided in the housing 1. The housing 1 has a hollow structure with an open top. The top cover 13 is inserted and covered on the top opening of the housing to close the top opening. A first through hole is provided on the top cover 13. One end of the connecting ring 14 is inserted and fitted in the first through hole, and the other end is butted against the end of the heating tube far from the heating element fixing frame 11. The inner cavities of the first through hole and the connecting ring 14 are sequentially communicated to form the cigarette holder 3. The heating element fixing frame 11 and the connecting ring 14 need to be made of high-temperature resistant materials to withstand the heat generated by the heating element 4 and will not produce harmful volatile substances, such as high-temperature resistant silica gel. The heating tube can be various heating tubes with an electric heating function in the prior art. For example, the heating tube is composed of a metal heat conduction tube and a thick film resistor paste layer printed on the outer peripheral wall of the metal heat conduction tube. The thick film resistor paste layer is provided with positive and negative electrodes electrically connected to the control board. An insulating layer is provided between the metal heat conduction tube and the thick film resistor paste layer. After being powered on, the heat generated by the thick film resistor paste layer is transferred into the cavity of the metal heat conduction tube through the metal heat conduction tube to heat the smoking material.

[0042] See Figures 4-6, in another preferred solution, the ejection mechanism includes a sliding key 15 slidably disposed on the housing 1, an impact member 17 fixedly connected to the sliding key 15 and facing the cleaning plug mounting through hole 12, and a return spring 18. The two ends of the return spring 18 are respectively fixedly connected to the sliding key 15 and the housing 1. Specifically, one end of the return spring 18 is fixed to the inner wall of the housing by a fastening screw, and the other end is hooked on the hook of the sliding key. The sliding key 15 can drive the impact member 17 to move toward the cleaning plug 9 under an external force to eject the cleaning plug 9 from the cleaning plug mounting through hole 12 and reset under the action of the return spring 18. When the cleaning plug 9 is installed in the cleaning plug mounting through hole 12, the impact member 17 contacts the bottom end of the cleaning plug 9 in the reset state, which can further shorten the impact stroke and make the structure of the whole smoking device more compact. The size of the cleaning plug 9 is designed to be slightly smaller than the inner diameter of the heating tube, so that the cleaning plug 9 is in a free state in the heating tube after being detached from the cleaning plug mounting through hole 12. By turning the cigarette insertion port 3 downward, the cleaning plug 9 can slide out of the cigarette insertion port 3 under its own gravity, which can make the length of the impact member 17 designed very short and make the structure of the whole smoking device more compact. Of course, the cleaning plug 9 can also be designed to be adapted to the size of the heating tube and slidably connected. In this structure, the cleaning plug 9 cannot be ejected by its own gravity, and the length of the impact member 17 is required to be designed very long to eject the cleaning plug 9 from the heating tube. In this embodiment, the ejection mechanism is composed of a sliding key 15, an impact member 17 and a return spring 18, with a very simple structure. Moreover, it adopts a mechanical cleaning solution, with high application strength, durability and good touch. It can be imagined that other existing structures with a top extension function can also be used.

[0043] Participate Figures 1-4, preferably, a sliding key fixing piece 19 is arranged inside the housing 1, the sliding key 15 is slidably clamped between the housing 1 and the sliding key fixing piece 19, the start button 20 on the sliding key 15 is located in the avoidance opening 21 on the side wall of the housing, and the anti-slip protrusion 16 is arranged on the start button 20. The impact piece 17 can be designed as an impact rod coaxially arranged with the cleaning plug mounting through hole 12, and its size is slightly smaller than the cleaning plug mounting through hole 12. When the cleaning plug 9 needs to be replaced or cleaned, the user pushes the start button 20 so that the sliding key 15 drives the impact rod to move towards the cleaning plug mounting through hole 12, and the return spring 18 is stretched, so as to disengage the cleaning plug 9 from the cleaning plug mounting through hole 12. The movement stroke of the sliding key 15 needs to be greater than the interference fit length between the cleaning plug 9 and the cleaning plug mounting through hole 12. After the cleaning plug 9 is disengaged from the cleaning plug mounting through hole 12, the sliding key 15 is reset under the restoring force of the return spring 18 until the start button 20 contacts and is limited by the side wall of the avoidance opening 21. In this design, the sliding key is fixed on the housing by the sliding key fixing piece so that the sliding key can only slide within the range of the avoidance notch 21 that cooperates with it. When the sliding key is not toggled, the cleaning plug in contact with it is in an assembled connection state in the smoking device and is in an interference fit and fixed state with the heating element fixing frame. When the sliding key is toggled to slide a specific stroke S, the cleaning plug in contact with it will be pushed to displace S, and the designed displacement stroke S is greater than the interference length L. Therefore, when the sliding key is pushed out by the stroke S, the cleaning plug 9 is disengaged from the interference and is in a free state in space and disengages from the heating element cavity to complete cleaning or replacement.

[0044] See Figure 3 and Figure 4In another preferred embodiment, a heat insulating member 22 is provided between the heating chamber (heating tube) and the shell 1. The heat insulating member 22 can be made of heat insulating cotton, vacuum tube or other existing heat insulating structures. As in the present embodiment, a vacuum tube is used for heat insulation, and the vacuum cavity formed in the side wall of the vacuum tube is used to prevent heat from being transferred to the shell. The vacuum degree in the vacuum cavity depends on the specific insulation conditions, and is preferably a high vacuum. The vacuum tube is sleeved outside the heating tube and a gap is left between the two to form a first airway 23. The bottom end of the vacuum tube is in contact with the heating element fixing frame 11. In order to prevent the backflow and diffusion of smoke, it is preferably a sealed connection. A second airway (not shown in the figure) connected to the first airway 23 is provided on the heating element fixing frame 11. An air inlet 24 is provided on the top cover of the shell 1 at the cigarette socket 3. The air inlet 24, the first airway 23, the second airway, the gap between the cleaning plug 9 and the heating tube, and the heating tube are connected in sequence to form a U-shaped airflow channel. In this embodiment, the interference fit between the heating element fixing frame 11 and the cleaning plug 9 partially blocks the downward flow extension of the gas, and the gas can only continue to flow in the opposite direction of the gas flow through the gap between the cleaning plug 9 and the heating element, and the smoke is taken out from the cigarette in the heating chamber to the smoking end of the cigarette. The entire gas flow forms a "U"-shaped return, rather than a top-down through-channel. The condensation and tar residues generated by the smoke during the smoking process will accumulate on the cleaning plug 9. The fresh air entering from the outside will pass through the side wall of the heating tube. There is a heat exchange process. The air entering the heating tube has been preheated and the temperature is increased to a certain extent, which can not only save energy, but also reduce the temperature of the entire smoking device shell. Of course, the air flow channel can also adopt other forms, such as the air inlet is set on the side wall of the shell, and the air inlet is directly connected to the second airway, but the energy loss of this air flow channel will be relatively large. A certain gap can also be set between the shell 1 and the vacuum tube to form an air insulation layer, which can further prevent heat from being transferred to the shell direction and prevent the shell temperature from being too high, resulting in hot hands. Of course, the shell 1 and the vacuum tube can also be connected by contact, but the heat insulation effect of this connection method is worse than that of providing an air insulation layer.

[0045] See also Figure 3 and Figure 4 In another preferred embodiment, the housing 1 includes a left half shell 25 and a right half shell 26 that are fixed to each other. When the left half shell 25 and the right half shell 26 are fixed to each other, the vacuum tube, the heating element fixing frame 11, the battery 6 and the control board 7 are fixed in the housing. The vacuum tube, the battery 6 and the control board 7, the heating element fixing frame 11, etc. are installed in the housing 1 by means of a card-fitting method, and replacement and installation are very convenient. The battery 6, the control board 7 and the ejection mechanism are arranged in one end of the housing away from the heating tube, which can effectively prevent the heating tube from failing due to the heat generated by the heating tube.

[0046] The above embodiments are merely examples clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A low-temperature baking smoking device, characterized in that, Comprising: A housing, inside which a heating cavity for inserting a cigarette is formed; A heating element, which uses surrounding heating to heat the cigarette inserted in the heating cavity to generate smoke for the customer to inhale, and the heating element is a heating tube; A cleaning plug, arranged at one end of the heating cavity opposite to the insertion end of the cigarette, so that the residues generated after the cigarette is heated are deposited thereon; An ejection mechanism, which acts on the cleaning plug to eject it from the housing; A heating tube and a heating element fixing bracket communicating with the cigarette socket on the housing are installed in the housing. The heating tube is fixedly installed on the heating element fixing bracket, and the end far from the cigarette socket is blocked by the heating element fixing bracket. The cleaning plug is arranged in the heating tube and is in interference connection with the cleaning plug installation through hole on the heating element fixing bracket; A sliding key fixing piece is arranged in the housing. The ejection mechanism includes a sliding key arranged on the housing, an impact piece fixedly connected to the sliding key and facing the cleaning plug installation through hole, and a return spring. The sliding key is slidably clamped between the housing and the sliding key fixing piece. The start button on the sliding key is located in the avoidance opening groove on the inner wall of the housing. The sliding key can drive the impact piece towards the cleaning plug under the action of an external force to eject the cleaning plug from the cleaning plug installation through hole and reset under the action of the return spring. After the cleaning plug is separated from the cleaning plug installation through hole, it is in a free state in the heating tube and can slide out freely from the cigarette socket; A heat insulation member is arranged between the heating cavity and the housing. A first air passage is formed between the heat insulation member and the heating cavity. A second air passage is arranged on the heating element fixing bracket. An air inlet hole is arranged at the cigarette socket of the housing. The air inlet hole, the first air passage, the second air passage, the gap between the cleaning plug and the heating tube, and the heating tube are sequentially communicated to form a U-shaped air flow channel; 2. The low-temperature baking smoking device according to claim 1, wherein: The cross section of the cleaning plug is T-shaped, and the vertical section of the cleaning plug is in interference connection with the cleaning plug installation through hole; 3. The low-temperature baking smoking device according to any one of claims 1-2, characterized in that: The heat insulation member is a vacuum tube; 4. The low-temperature baking smoking device according to claim 3, characterized in that: A battery and a control board electrically connected to the battery are arranged in the housing. The heating element is electrically connected to the control board. A control button connected to the control board is arranged on the housing; 5. The low-temperature baking smoking device according to claim 4, wherein: The housing includes a left half shell and a right half shell that are buckled and fixed to each other. When the left half shell and the right half shell are buckled, the vacuum tube, the battery and the control board are clamped and fixed in the housing.

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