Plug-in cigarette holder

Abstract

The present invention discloses a plug-in cigarette rod, comprising a heating unit and a control unit that are plugged in to form an electrical connection, wherein a heating chamber that passes through both ends of the heating unit is formed in the heating unit, and one end of the heating chamber is closed by an openable and closable plugging piece; an air inlet channel that connects the heating chamber and the outside is formed on the side of the heating unit, and the heating unit is also provided with a heating element for heating the cigarette inserted in the heating chamber, and the control unit is provided with a battery for supplying power to the heating element. The heating chamber of the present invention adopts a through-type structure, and when the heating chamber needs to be cleaned, it only needs to open the plugging piece to clean it from both ends of the heating chamber, and the residues such as tar produced by the smoking material will be deposited on the plugging piece under the action of gravity, and the bottom of the heating chamber can be cleaned by replacing or cleaning the plugging piece, thereby achieving a thorough cleaning of the heating chamber.

Description

Technical Field

[0001] The invention belongs to the technical field of smoking articles, and in particular relates to a plug-in type cigarette rod. Background Art

[0002] There are mainly two types of electronic cigarettes on the market, such as electronic cigarettes that form smokable smoke by evaporating smoke oil and low-temperature cigarettes that form smokable smoke by heating / distilling tobacco materials at low temperatures (150-300 degrees). Compared with traditional combustion cigarettes, electronic cigarettes and low-temperature cigarettes have low operating temperatures, and the smoke produced by the smoke oil or low-temperature cigarettes they use contains far less harmful components than traditional combustion 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 produce smokeable smoke by heating low-temperature cigarettes, the heating methods are generally divided into surrounding heating and central heating. Among them, central heating is mostly a metal sheet or metal rod as a heating element. When in use, the heating element is inserted into tobacco materials such as cigarettes, and electricity is applied to the metal sheet or metal rod to make it heat up, thereby heating tobacco materials such as cigarettes. Surrounding heating generally uses a heating tube as a heating element. When in use, the cigarette is inserted into the heating tube, and electricity is applied to the heating tube to generate heat to heat the cigarette.

[0004] For the surrounding heating method, during use, residues are easily accumulated on the inner wall and bottom of the heating chamber. Especially in the case of long-term use, visible tobacco residues and other substances will be produced at the bottom of the heating chamber. When using a cleaning brush for routine cleaning, the bottom is often not cleaned thoroughly, and there is a peculiar smell when the second draw is made. Therefore, how to clean the heating chamber, or how to design the cleaning structure of the heating chamber, is crucial for low-temperature smoke. Summary of the invention

[0005] The present 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 plug-in cigarette rod with a convenient cleaning of the heating chamber.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A pluggable cigarette rod comprises a heating unit and a control unit which are plugged in to form an electrical connection. A heating cavity is formed in the heating unit and passes through both ends of the heating unit. One end of the heating cavity is closed by an openable and closable blocking piece. An air intake channel connecting the heating cavity and the outside is formed on the side of the heating unit. The heating unit is also provided with a heating element for heating the cigarette inserted in the heating cavity. The control unit is provided with a battery for powering the heating element.

[0008] Furthermore, a one-way air intake valve is also provided in the heating unit, and the one-way air intake valve allows the air flow to enter the heating chamber from the air intake channel in one direction.

[0009] Furthermore, the one-way air inlet valve is an elastic valve plate that tightly covers the outlet of the air inlet channel. The elastic valve plate undergoes elastic deformation under the action of the suction force so that the air inlet channel is connected with the heating chamber.

[0010] Furthermore, a positioning step or a positioning ring for limiting the insertion depth of the cigarette is formed in the heating chamber, and the air inlet channel is arranged between the limiting step and the blocking member.

[0011] Furthermore, the heating unit includes a heating unit shell, in which a cigarette clamp, an upper bracket of the heating element, a heating tube and a lower bracket of the heating element are arranged in sequence from top to bottom, and a cigarette socket is provided at the top of the heating unit shell. The cigarette socket, cigarette clamp, upper bracket of the heating element, heating tube and lower bracket of the heating element are connected in sequence to form a channel including the heating chamber.

[0012] Furthermore, a heat insulating layer is provided between the heating tube and the outer shell of the heating unit.

[0013] Furthermore, the positioning step is formed at the joint between the lower bracket of the heating element and the heating tube, and the air inlet passage is composed of a first hole arranged on the lower bracket of the heating element and a second hole arranged on the outer shell of the heating unit and connected to the first hole.

[0014] In the pluggable cigarette rod of the above technical solution, an installation chamber for inserting the heating unit is formed in the control unit, the battery is arranged in the end of the control unit away from the installation chamber, a first connecting electrode electrically connected to the battery is provided in the installation chamber, and a second connecting electrode electrically connected to the heating element is provided on the heating unit. When one end of the heating unit provided with a sealing piece is matched and inserted in the installation chamber, the first connecting electrode is electrically connected to the second connecting electrode.

[0015] Furthermore, the first connecting electrode is an aviation pin, and the second connecting electrode is an aviation plug adapted to the aviation pin.

[0016] Furthermore, the control unit is also provided with a control board electrically connected to the battery.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The heating chamber adopts a through-type structure. When the heating chamber needs to be cleaned, you only need to open the sealing piece to clean it from both ends of the heating chamber. In addition, the tar and other residues produced by the smoking material will be deposited on the sealing piece under the action of gravity. By replacing or cleaning the sealing piece, the bottom of the heating chamber can be cleaned, and the heating chamber can be thoroughly cleaned.

[0019] 2. A one-way airflow valve is designed in the heating unit, so that the airflow can only enter the heating chamber from the air inlet channel, but not the reverse flow channel, which can prevent the smoke from flowing back and increase the experience; especially when the one-way valve is an elastic valve plate, the suction force is used to make the elastic valve plate elastically deform to connect the air inlet channel with the heating chamber, which has the characteristics of simple structure, quick response and easy operation.

[0020] 3. The heating unit and control unit of the smoking device adopt a detachable design. The heating unit and the control unit are connected by aviation pins. The aviation pins play two roles of conduction and connection. When the heating chamber needs to be cleaned, you only need to pull the heating unit out of the control unit and open the sealing piece to easily clean the heating element or the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an external schematic diagram of the present invention;

[0022] Figure 2 The structure of the present invention is schematically shown Figure 1 ;

[0023] Figure 3 The structure of the present invention is schematically shown Figure 2 ;

[0024] Figure 4 An exploded view of the present invention;

[0025] Figure 5 This is a schematic diagram of the air intake state of the one-way valve in the cigarette holder of the present invention;

[0026] Figure 6 It is a schematic diagram of the non-return state of the one-way valve in the cigarette holder of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Example 1

[0029] See also Figure 1-Figure 3A plug-in cigarette rod includes a heating unit and a control unit which are plugged in to form an electrical connection. A heating chamber 1 is formed in the heating unit and passes through both ends of the heating unit. One end of the heating chamber 1 is closed by an openable and closable blocking member 2. In this embodiment, the blocking member 2 is a dust cover made of a high-temperature resistant material (such as silica gel). An air intake channel 3 connecting the heating chamber 1 and the outside is formed on the side of the heating unit. A heating element 4 is also provided in the heating unit. A battery 18 for powering the heating element 4 is provided in the control unit. The battery 18 can be a lithium-ion battery, a nickel-hydrogen battery, or other batteries in the prior art. The heating unit and the control unit are detachable. When the user needs to smoke, the cigarette 24 with the smoking material is inserted into the heating chamber 1 from the open end of the heating chamber. The heating element 4 heats the cigarette in the heating chamber 1 to generate smoke for the user to smoke. After the external airflow enters the heating chamber 1 from the air inlet channel 3, it enters the cigarette from the bottom of the cigarette and takes the smoke out from the top of the cigarette. When the cigarette is inserted into the heating unit, the filter section of the cigarette is at least partially exposed from the heating unit, so that the user can directly hold the filter and smoke. Tar and other residues produced by the cigarette can be deposited on the sealing member 2 under the action of gravity. When the heating chamber 1 needs to be cleaned, it is only necessary to pull out the heating unit, open the sealing member 2, and use a brush or other tool to clean it from both ends of the heating chamber 1. The bottom of the heating chamber 1 can be cleaned by replacing or cleaning the sealing member 2, and the heating chamber 1 can be cleaned thoroughly. In order to position the insertion depth of the cigarette, a positioning step is formed in the heating chamber (a positioning ring can also be used for positioning). The positioning step divides the heating chamber into an upper cigarette installation chamber (not shown in the figure) and a lower air intake chamber. The air intake channel 3 is arranged between the limiting step and the blocking member 2. After the cigarette is inserted into the cigarette installation chamber from the open end of the heating chamber, it abuts against the step surface of the positioning step to position the insertion depth. After the airflow enters the air intake chamber from the air intake channel 3, it enters the cigarette from the bottom of the cigarette 23.

[0030] Specifically, the heating unit includes a heating unit shell 5, in which a cigarette clamp ring 13, a heating element upper bracket 6, a heating tube and a heating element lower bracket 7 are arranged in sequence from top to bottom. A cigarette socket 8 is arranged at the top of the heating unit shell 5, and a first through hole 9 and a second through hole 10 are respectively arranged on the heating element upper bracket 6 and the heating element lower bracket 7. The cigarette socket, the cigarette clamp ring, the first through hole 9, the heating tube and the second through hole 10 are sequentially connected to form a channel containing the heating chamber 1, and the blocking member 2 is arranged on the heating element lower bracket 7 to block the bottom end of the second through hole 10. The inner diameter of the cigarette clamp ring 13 is slightly smaller than the diameter of the cigarette, so that there is a certain resistance after the cigarette is inserted into the heating chamber 1, and the cigarette can be stuck on the cigarette clamp ring 13 to achieve axial positioning, preventing the cigarette from being thrown out of the heating unit under the action of external force.

[0031] In this embodiment, the heating element 4 is a heating tube, which adopts surrounding heating. The heating tube can adopt various heating tubes with electric heating function in the prior art. For example, the heating tube is composed of a metal heat-conducting tube and a thick-film resistor paste layer printed on the outer wall of the metal heat-conducting tube. The thick-film resistor paste layer is provided with positive and negative electrodes. The metal heat-conducting tube and the thick-film resistor paste layer are provided with an insulating layer. After power is turned on, the heat generated by the thick-film resistor paste layer is transferred through the metal heat-conducting tube into the metal heat-conducting tube cavity to heat the smoking material.

[0032] The lower bracket 7 of the heating element and the heating tube form a positioning step at the joint. The air inlet channel 3 consists of a first channel 11 arranged on the side wall of the lower bracket 7 of the heating element and a second channel 12 arranged on the heating unit shell 5 and connected to the first channel 11. The second through hole 10 with a closed bottom end constitutes an air inlet chamber.

[0033] In order to prevent heat from being transferred to the heating unit housing 5 and scalding the hands, a heat insulation layer 14 is provided between the heating tube and the heating unit housing 5. The heat insulation layer 14 can adopt existing heat insulation structures such as vacuum tubes or heat insulation cotton. In order to further improve the heat insulation effect, an air heat insulation layer is also formed between the heat insulation layer 14 and the heating unit housing 5.

[0034] Example 2

[0035] See also Figure 5 and Figure 6 , which is different from the embodiment 1, a one-way air intake valve 15 is also provided in the heating unit, and the one-way air intake valve 15 allows the airflow to enter the heating chamber 1 only from the air intake channel 3 in one direction. In this embodiment, a one-way airflow valve 15 is designed in the heating unit, so that the airflow can only enter the heating chamber 1 from the air intake channel 3, but not the reverse flow channel, which can prevent the smoke from flowing back and increase the experience.

[0036] Specifically, the one-way air inlet valve 15 is an elastic valve plate that tightly covers the outlet of the air inlet channel. When the user inhales, the elastic valve plate undergoes elastic deformation under the action of the suction force so that the air inlet channel 3 is connected to the heating chamber 1. After the user finishes inhaling, the elastic valve plate re-covers the outlet of the air inlet channel under the action of its own elastic restoring force. The one-way valve plate is used to control the airflow direction, which has the characteristics of simple structure, rapid response and convenient operation. Preferably, the elastic valve plate is vertically fixed on the blocking member 2. When the blocking member 2 blocks the bottom end of the second through hole, the elastic valve plate just covers the first channel and is tightly attached to the inner wall of the lower bracket 7 of the heating element. The rest of the structure of this embodiment is the same as that of embodiment 1, and will not be repeated here.

[0037] Example 3

[0038] See also Figure 2-Figure 4, which is different from the first and second embodiments, a mounting chamber 17 with a top opening for inserting the heating unit is provided on the control unit 16, a battery 18 is provided in one end of the control unit 16 away from the mounting chamber 17, a first connection electrode 19 is provided on the bottom surface of the mounting chamber 17, which is arranged toward the top opening and electrically connected to the control board, a second connection electrode 20 is provided on the heating unit, which is electrically connected to the heating element 4 through the crown spring PCB board, and one end of the heating unit provided with the blocking member 2 is matched and inserted in the mounting chamber 17, and correspondingly, the first connection electrode 19 is electrically connected to the second connection electrode 20, and the battery 18 is used to supply power to the heating element 4 when needed. Specifically, the first connection electrode 19 is an aviation pin (crown spring pin), and the second connection electrode 20 is an aviation plug (crown spring) adapted to the aviation pin.

[0039] In this embodiment, the heating unit and control unit of the low-temperature smoking device adopt a detachable design. The heating unit and the control unit are connected by an aviation pin. The aviation pin has two functions of conduction and connection. When the heating chamber needs to be cleaned, it is only necessary to pull the heating unit out from the control unit 16 and open the sealing piece 2 to conveniently clean the heating element or the heating chamber.

[0040] In this embodiment, the control unit 16 is equipped with a control board 21, a battery 18, a control board 21, a first connection electrode 19, a second connection electrode 20 and a heating element 4 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 repeated here. A control button 22 and a charging socket 23 are also provided on the control unit 16. The battery 18 is connected to an external power source through the charging socket 23 to realize charging. When the heating element 4 needs to be powered, the heating element 4 is powered by pressing the control button 22 through the control circuit. When the control button 22 is pressed again, the control circuit realizes power off of the heating element.

[0041] In this embodiment, the heating unit housing 5 is composed of a first housing 5-1 and a second housing 5-2 installed at the bottom of the first housing 5-1. The first housing 5-1 and the second housing 5-2 are fixed by snaps. The two ends of the heating tube are respectively fixed on the upper bracket 6 and the lower bracket 7 of the heating element. When the second housing 5-2 is installed on the first housing 5-1, the upper end of the upper bracket 6 of the heating element abuts against the inner wall of the top of the first housing 5-1, and the bottom end of the lower bracket 7 of the heating element abuts against the inner wall of the bottom end of the second housing 5-2, so as to realize the positioning and fixing of the heating tube in the heating unit housing 5. The second housing 5-2 is adapted to the size and shape of the installation chamber 17. When the heating unit is inserted, the second housing 5-2 is inserted into the installation chamber 17, and the airflow enters the air inlet channel 3 from the gap between the second housing 5-2 and the installation chamber 17. The remaining structures of this embodiment are the same as those of embodiment 1, and will not be repeated here.

[0042] The above embodiments are merely examples for clearly illustrating the invention, and are not intended to limit the implementation methods. For those skilled 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. The obvious changes or modifications derived from them are still within the scope of protection of the invention.

Claims

1. Plug-in cigarette holder, characterized by: The invention comprises a heating unit and a control unit which are plugged in to form an electrical connection, wherein a heating cavity which passes through both ends of the heating unit is formed in the heating unit, and one end of the heating cavity is closed by a plugging member which can be opened and closed; an air inlet passage which communicates with the heating cavity and the outside is formed on the side of the heating unit, and a heating element for heating a cigarette inserted in the heating cavity is also provided in the heating unit, and a battery for supplying power to the heating element is provided in the control unit; the heating element is a heating tube; A positioning step or a positioning ring for limiting the insertion depth of the cigarette is formed in the heating chamber, and the air inlet channel is arranged between the positioning step or the positioning ring for limiting and the blocking member; The heating unit comprises a heating unit shell, in which a cigarette clamp ring, an upper bracket of a heating element, a heating tube and a lower bracket of a heating element are arranged in sequence from top to bottom, and a cigarette socket is arranged at the top of the heating unit shell, and the cigarette socket, the cigarette clamp ring, the upper bracket of the heating element, the heating tube and the lower bracket of the heating element are connected in sequence to form a channel including the heating chamber; The positioning step is formed at the joint between the lower bracket of the heating element and the heating tube, and the air inlet passage is composed of a first hole provided on the lower bracket of the heating element and a second hole provided on the outer shell of the heating unit and connected with the first hole; The heating unit is also provided with a one-way air intake valve, which allows airflow to enter the heating chamber from the air intake channel in one direction; A heat insulation layer is arranged between the heating pipe and the heating unit shell.

2. The plug-in cigarette rod according to claim 1, characterized in that: The one-way air inlet valve is an elastic valve plate that tightly covers the outlet of the air inlet channel. The elastic valve plate undergoes elastic deformation under the action of the suction force so that the air inlet channel is connected with the heating chamber.

3. The plug-in cigarette rod according to any one of claims 1-2, characterized in that: The control unit is formed with an installation chamber for inserting the heating unit, the battery is arranged in one end of the control unit away from the installation chamber, the installation chamber is provided with a first connecting electrode electrically connected to the battery, the heating unit is provided with a second connecting electrode electrically connected to the heating element, and when one end of the heating unit provided with a sealing piece is matched and inserted into the installation chamber, the first connecting electrode is electrically connected to the second connecting electrode.

4. The plug-in cigarette rod according to claim 3, characterized in that: The first connecting electrode is an aviation pin, and the second connecting electrode is an aviation plug adapted to the aviation pin.

5. The plug-in cigarette rod according to claim 3, characterized in that: The control unit is also provided with a control board electrically connected to the battery.

Images