Photoelectric self-starting cigarette heating appliance

Abstract

A photoelectric type self-starting cigarette heating appliance comprises a shell, the shell is provided with a cigarette inserting and pulling opening used for inserting a cigarette, the cigarette inserting and pulling opening is communicated with a smoke generating cavity, the smoke generating cavity comprises a cigarette channel used for allowing the cigarette to pass through, a heating cavity used for heating the cigarette and an air inlet cavity used for air inlet, and the cigarette channel is communicated with the smoke generating cavity. The cigarette channel enables the cigarette inserting and pulling opening to be communicated with the heating cavity, an air inlet of the heating cavity is communicated with the air inlet cavity, a sensor for detecting insertion of a cigarette is arranged on the inner wall of the cigarette channel, the sensor is connected with the heating cavity through the PCB control panel, and whether the cigarette is inserted into the cigarette channel or not is detected through the sensor so that opening and closing of the heating cavity can be controlled. According to the device, a symmetric infrared sensor self-starting structure is utilized, starting and heating are achieved while a cigarette is inserted, and therefore the time from heating to first cigarette smoking is greatly shortened.

Description

Technical Field

[0001] The utility model belongs to the field of heated cigarettes, in particular to a photoelectric self-starting cigarette heating device. Background Art

[0002] The heating methods of heated cigarette smoking devices are mainly divided into surrounding heating and central heating. When using a central heating cigarette smoking device, the heating chamber will be inserted into the smoking material from the end of the cigarette, heating the smoking material inside, and the heat will be conducted from the center to the outside. Due to the small contact area between the heating chamber and the smoking material, the heat conduction is slow. Therefore, the heated cigarette needs to go through a preheating process before it can be smoked after it starts heating, which affects the consumer experience. On the other hand, the method of integrating central heating and surrounding heating is adopted. Since the surrounding heating element is usually a closed ring, electromagnetic induction is used to generate heat for the central and surrounding heating elements to heat the cigarette. The ring-shaped metal heating element causes the magnetic flux to be concentrated on the ring body, forming a magnetic field shielding effect on the central heating element. Therefore, it affects the absorption and conversion of the magnetic flux by the central heating element, making the central heating efficiency low. It will also cause uneven heating and affect the taste of the e-cigarette. Utility Model Content

[0003] The utility model solves the deficiencies of the prior art and provides a photoelectric self-starting heating cigarette device which allows the heat of the heating chamber to be directed to the cigarette from multiple directions simultaneously during the heating process of the heating cigarette device, thereby significantly reducing the preheating waiting time for consumers before smoking.

[0004] To achieve the above-mentioned purpose, the utility model first proposes a photoelectric self-starting cigarette heating device, comprising a shell, on which a cigarette plug-in port for inserting cigarettes is provided, and the cigarette plug-in port is connected to a smoking chamber, which comprises a cigarette channel for passing cigarettes, a heating chamber for heating cigarettes, and an air intake chamber for air intake. The cigarette channel connects the cigarette plug-in port with the heating chamber, and the air intake of the heating chamber is connected to the air intake chamber. A sensor for detecting the insertion of cigarettes is provided on the inner wall of the cigarette channel, and the sensor is connected to the heating chamber through a PCB control board. The sensor detects whether a cigarette is inserted into the cigarette channel, thereby controlling the opening and closing of the heating chamber.

[0005] In this embodiment, the smoking chamber is composed of a heating chamber upper bracket, a heating chamber and a heating chamber lower bracket. The heating chamber is coaxially fixed between the heating chamber upper bracket and the heating chamber lower bracket. A through hole is provided in the middle of the heating chamber upper bracket to form a cigarette channel for cigarettes to pass through. The heating chamber lower bracket is provided with an air inlet chamber connected to the heating chamber.

[0006] In this embodiment, the sensor is a symmetrical infrared sensor.

[0007] In this embodiment, the sensor includes an infrared emitting tube and an infrared receiving tube. Two first mounting holes are arranged opposite to each other on the side walls of the upper bracket of the heating chamber. The upper bracket of the heating chamber is covered with an airway waterproof silicone sleeve that matches the size of the upper bracket of the heating chamber. A second mounting hole is provided on the side wall of the airway waterproof silicone sleeve at a position corresponding to the first mounting hole. After the airway waterproof silicone sleeve is mounted on the upper bracket of the heating chamber, the first mounting hole and the second mounting hole are connected to each other. The first mounting hole and the second mounting hole together constitute a lens mounting hole. A waterproof lens is sealed and installed in the lens mounting hole. The infrared emitting tube and the infrared receiving tube are arranged on the outside of the airway waterproof silicone sleeve and are respectively installed in two waterproof lenses arranged opposite to each other.

[0008] In this embodiment, the waterproof lens includes a translucent sheet that matches the overall depth and size of the lens mounting hole and a sealing retaining ring fixed around the translucent sheet; the waterproof lens includes a first lens sealing surface arranged on the inner side of the sealing retaining ring and a second lens sealing surface arranged on the outer side of the translucent sheet, the airway waterproof silicone sleeve is provided with a third silicone sleeve sealing surface on the outer side near the second mounting hole, and the airway waterproof silicone sleeve is provided with a second silicone sleeve sealing surface on the inner side of the second mounting hole. After the waterproof lens is installed in the lens mounting hole, the first lens sealing surface abuts against the third silicone sleeve sealing surface to achieve pre-compression sealing, and the second lens sealing surface abuts against the second silicone sleeve sealing surface to achieve pre-compression sealing.

[0009] In this embodiment, the shell includes an upper bracket, a lower bracket, an upper cover and a lower cover. The upper bracket and the lower bracket are arranged relative to each other, and the upper bracket and the lower bracket are assembled in a detachable manner. After the upper bracket and the lower bracket are assembled, a first cavity for fixing the battery, a second cavity for installing the smoking chamber, and a third cavity for fixing the PCB control board are formed inside. The upper bracket can be detachably installed in the upper cover, and the lower bracket can be detachably installed in the lower cover. A through hole is provided on the lower cover to form the cigarette plug-in port. A lower cover sealing surface matching the airway waterproof silicone sleeve is provided on the inner side of the lower cover. After the upper cover and the lower cover are connected, the top of the airway waterproof silicone sleeve abuts against the sealing surface of the lower cover to achieve sealing, and the battery is electrically connected to the PCB control board.

[0010] In this embodiment, a vibration motor is further installed in the lower bracket, and the vibration motor is electrically connected to the PCB control board.

[0011] In this embodiment, the upper cover and the lower cover are respectively installed with an upper guide rail and a lower guide rail on the side close to the cigarette insertion port. After the upper cover and the lower cover are connected, a slide rail is formed between the upper guide rail and the lower guide rail. The lower cover is also provided with a slide groove connected to the slide rail. A dust cover for opening and closing the cigarette insertion port is provided on the outer side of the lower cover. A slider is provided at the bottom of the dust cover, and the slider slides through the slide groove and is installed in the slide rail. A detection switch is installed in the slide rail on the side away from the cigarette insertion port, and a dust cover contact matching the detection switch is installed on the slider. The detection switch is electrically connected to the PCB control board. When the dust cover is opened to the full extent, the dust cover contact touches the detection switch, and the detection switch controls the PCB control board to be powered on, and the PCB control board controls the operation of the infrared transmitting tube and the infrared receiving tube; when the dust cover is closed, the dust cover contact is disengaged from the detection switch, and the detection switch controls the PCB control board to be powered off.

[0012] The above structure has the following advantages:

[0013] 1. The symmetrical infrared sensor self-starting structure enables the device to start and heat up simultaneously when a cigarette is inserted, thus greatly shortening the time from heating to the first puff.

[0014] 2. During the heating process of cigarettes, water vapor will be generated. This device uses a waterproof silicone sleeve to prevent the water vapor in the heating chamber from entering the detection switch and other parts of the device, causing device malfunction.

[0015] 3. Use the detection switch and the symmetrical infrared sensor self-starting structure as a dual switch to reduce the standby power consumption of the infrared sensor.

[0016] In summary, this device uses symmetrical infrared sensors to power on and heat the device simultaneously with the insertion of a cigarette. As soon as a cigarette is inserted into the mouthpiece, the device begins preheating, making it simpler, faster, and more user-friendly. If a cigarette is removed mid-smoking, the heating element automatically stops heating, achieving intelligent operation and enhancing the user experience. Furthermore, compared to existing devices, the lack of a power button means users are less likely to accidentally touch the device while carrying it, making it safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the upper cover of the utility model;

[0018] Figure 2 This is a structural diagram of the position of the cigarette insertion and extraction port of the utility model;

[0019] Figure 3 This is a cross-sectional view of the cigarette channel of the present invention;

[0020] Figure 4 This is a schematic diagram of the dust cover of the utility model in a closed state;

[0021] Figure 5 This is a schematic diagram of the dust cover of the utility model in the open state;

[0022] Figure 6 This is a schematic diagram of the structure of the utility model for inserting a cigarette into a cigarette passage;

[0023] Figure 7 This is a schematic diagram of the structure of the upper bracket of the heating chamber of the utility model;

[0024] Figure 8 This is a structural diagram of the airway waterproof silicone sleeve of the utility model;

[0025] Figure 9 This is a schematic diagram of the sealing surface of the airway waterproof silicone sleeve of the utility model;

[0026] Figure 10 This is the internal structure diagram of the airway waterproof silicone sleeve of the utility model;

[0027] Figure 11 This is a schematic diagram of the structure of the waterproof lens of the utility model;

[0028] Figure 12 This is a schematic diagram of the structure of the FPC of the utility model;

[0029] Figure 13 This is a schematic diagram of the structure of the utility model after the upper cover is removed;

[0030] Figure 14 This is a partial structural diagram of the lower cover of the utility model;

[0031] Figure 15 This is a schematic structural diagram of the upper guide rail of the utility model;

[0032] Figure 16 This is a schematic structural diagram of the lower guide rail of the utility model;

[0033] Figure 17 This is the working principle diagram of the utility model;

[0034] Figure 18 This is an exploded view of the present invention.

[0035] In the attached figure, 1, infrared emitting tube; 2, infrared receiving tube; 3, cigarette; 4, heating chamber upper bracket; 401, first mounting hole; 402, heating chamber upper bracket sealing surface; 5, airway waterproof silicone sleeve; 501, first silicone sleeve sealing surface; 502, second silicone sleeve sealing surface; 503, third silicone sleeve sealing surface; 504, fourth silicone sleeve sealing surface; 505, second mounting hole; 6, FPC; 601, emitter pre-pressing fixing surface; 602, receiver pre-pressing fixing surface; 603, infrared emitting tube soldering pad; 604, infrared receiving tube soldering pad; 7, upper guide Rail; 701, upper guide rail pre-stressing fixing surface; 8, lower guide rail; 801, lower guide rail pre-stressing fixing surface; 9, lower cover; 901, lower cover sealing surface; 10, upper cover; 11, upper bracket; 1101, FPC mounting slot; 12, lower bracket; 13, waterproof lens; 1301, first lens sealing surface; 1302, second lens sealing surface; 14, PCB control board; 15, heating chamber; 16, heating chamber lower bracket; 17, dust cover; 1701, dust cover contact; 18, battery; 19, detection switch; 20, vibration motor; 21, guide rail screw. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] like Figures 1 to 18As shown, the utility model provides a photoelectric self-starting cigarette heating device, including a shell, the shell is provided with a cigarette plug-in port for inserting cigarettes, the cigarette plug-in port is connected to the smoking chamber, the smoking chamber includes a cigarette channel for cigarettes to pass through, a heating chamber 15 for heating cigarettes and an air intake chamber for air intake, the cigarette channel connects the cigarette plug-in port with the heating chamber 15, the air intake of the heating chamber is connected to the air intake chamber, the smoking chamber is composed of a heating chamber upper bracket 4, a heating chamber 15 and a heating chamber lower bracket 16, the heating chamber 15 is coaxial with the heating chamber 15. The heating chamber is fixed between the upper support 4 and the lower support 16. The upper support 4 is cylindrical and has a through hole in the middle to form a cigarette passage for cigarettes to pass through. The lower support 16 is provided with an air inlet cavity connected to the heating chamber 15. The heating chamber 15 is provided with a heating element for heating cigarettes. The inner wall of the upper support 4 is provided with a sensor for detecting the insertion of cigarettes. The sensor is connected to the heating chamber via a PCB control board. The sensor detects whether a cigarette is inserted into the cigarette passage and thus controls the opening and closing of the heating chamber.

[0039] Specifically, such as Figure 1 、 Figure 8 As shown, the sensor includes an infrared emitting tube 1 and an infrared receiving tube 2, and two first mounting holes 401 are arranged opposite to each other on the side wall of the heating chamber upper bracket 4.

[0040] The heating chamber upper bracket 4 is sheathed with an airway waterproof silicone sleeve 5 that matches the size of the heating chamber upper bracket 4. A second mounting hole 505 is provided on the side wall of the airway waterproof silicone sleeve 5 at a position corresponding to the first mounting hole 401. After the airway waterproof silicone sleeve 5 is sheathed on the heating chamber upper bracket 4, the first mounting hole 401 and the second mounting hole 505 are correspondingly communicated. The first mounting hole 401 and the second mounting hole 505 together constitute a lens mounting hole, and a waterproof lens 13 is sealed and installed in the lens mounting hole; the infrared transmitting tube and the infrared receiving tube are installed on the outside of the airway waterproof silicone sleeve 5 and are respectively placed in the relatively arranged waterproof lenses 13. When the cigarette 3 is inserted into the heating chamber through the cigarette channel, the cigarette 3 will block the infrared light emitted by the infrared transmitting tube 1, so that the infrared receiving tube 2 cannot receive the infrared light. At this time, the PCB control board controls the heating chamber 15 to heat up, and the heating chamber 15 shuts down after working for a set time;

[0041] like Figure 11 As shown, the waterproof lens 13 includes a light-transmitting sheet that matches the overall depth and size of the lens mounting hole and a sealing retaining ring fixed around the light-transmitting sheet; after the waterproof lens 13 is installed in the lens mounting hole, the waterproof lens 13 is sealed and connected to the inner wall of the second mounting hole 505. Specifically, as shown in FIG. Figure 11As shown, the waterproof lens 13 includes a first lens sealing surface 1301 arranged on the inner side of the sealing retaining ring and a second lens sealing surface 1302 arranged on the outer side of the light-transmitting sheet. The airway waterproof silicone sleeve 5 is provided with a third silicone sleeve sealing surface 503 on the outer side near the second mounting hole, and a second silicone sleeve sealing surface 502 on the inner side of the second mounting hole. After the waterproof lens 13 is installed in the lens mounting hole, the first lens sealing surface 1301 abuts against the third silicone sleeve sealing surface 503 to achieve pre-compression sealing, and the second lens sealing surface 1302 abuts against the second silicone sleeve sealing surface 502 to achieve pre-compression sealing, thereby realizing a sealed connection between the waterproof lens 13 and the inner wall of the second mounting hole 505.

[0042] like Figure 18 As shown, the shell includes an upper bracket 11, a lower bracket 12, an upper cover 10 and a lower cover 9. The upper bracket 11 and the lower bracket 12 are arranged relative to each other. The upper bracket 11 and the lower bracket 12 are assembled in a detachable manner. After the upper bracket 11 and the lower bracket 12 are assembled, a first cavity for fixing the battery 18, a second cavity for fixing the heating cavity 15, the heating cavity upper bracket 4, and the heating cavity lower bracket 16, and a third cavity for fixing the PCB control board 14 are formed inside. After the heating cavity upper bracket 4 is installed in the second cavity, a sensor is installed on the heating cavity upper bracket 4 and one end extends out of the second cavity. The upper bracket 11 It is detachably mounted in the upper cover 10, and the lower bracket 12 is detachably mounted in the lower cover 9. A through hole is provided on the lower cover 9 at a position corresponding to the cigarette passage on the upper bracket 4 of the heating chamber to form a cigarette insertion port. A lower cover sealing surface 901 that matches the airway waterproof silicone sleeve 5 is provided on the lower cover 9 on the inner side of the cigarette insertion port. After the upper cover 10 and the lower cover 9 are connected, the top of the airway waterproof silicone sleeve 5 abuts against the lower cover sealing surface 901 to achieve a seal. A vibration motor 20 is also installed in the lower bracket 12, and the fixed battery 18 and the vibration motor 20 are electrically connected to the PCB control board 14.

[0043] like Figure 4 、 5As shown, the upper cover 10 and the lower cover 9 are further installed with an upper guide rail 7 and a lower guide rail 8 on the side close to the cigarette insertion port, respectively. After the upper cover 10 and the lower cover 9 are connected, a slide rail is formed between the upper guide rail 7 and the lower guide rail 8. The lower cover 9 is provided with a slide groove connected to the slide rail. The outer side of the lower cover 9 is provided with a dust cover 17 that can open and close the cigarette insertion port. The bottom of the dust cover 17 is provided with a slider. The dust cover 17 is slidably installed in the slide groove and the slide rail through the slider. A detection switch 19 is installed in the slide rail on the side away from the cigarette insertion port, and a dust cover contact 1 that matches the detection switch 19 is installed on the slider. 701, the detection switch is electrically connected to the PCB control board. When the dust cover 17 slides in the guide rail and moves away from the cigarette plug-in port, the cigarette plug-in port is opened. At this time, the dust cover contact 1701 touches the detection switch 19. The detection switch 19 controls the PCB control board 14 to be powered on. The PCB control board 14 controls the infrared emitting tube 1 to continuously emit infrared light and the infrared receiving tube 2 to continuously receive infrared light. When the dust cover 17 slides to the cigarette plug-in port and closes the cigarette plug-in port, the dust cover contact 1701 leaves the detection switch 19. The detection switch 19 controls the PCB control board 14 to be powered off, thereby achieving energy saving.

[0044] The infrared emitting tube 1 and the infrared receiving tube 2 are electrically connected to the PCB control board 14 through an FPC 6, as shown in FIG. Figure 12 As shown, the upper bracket 11 is provided with an FPC mounting groove 1101 matching the FPC 6, and the FPC 6 is fixed in the FPC mounting groove 1101. One FPC 6 includes an emitter pre-pressing fixing surface 601 and an infrared emitting tube soldering pad 603, and the other FPC includes an emitter pre-pressing fixing surface 601 and an infrared receiving tube soldering pad 604. The emitter pre-pressing fixing surface 601 is provided with an FPC sealing surface 602, and the infrared emitting tube 1 and the infrared receiving tube 2 are respectively welded to the infrared emitting tube soldering pad 603 and the infrared receiving tube soldering pad 604; the upper guide rail 7 is provided with an upper guide rail pre-pressing fixing surface 701 at a position corresponding to the FPC sealing surface 602, and the lower guide rail is provided with an upper guide rail pre-pressing fixing surface 701. The rail 8 is provided with a lower guide rail pre-stressing fixing surface 801 corresponding to the upper guide rail pre-stressing fixing surface 701. After the upper guide rail 7 and the lower guide rail 8 are connected, the upper guide rail pre-stressing fixing surface 701 and the lower guide rail pre-stressing fixing surface 801 just clamp the emitter pre-stressing fixing surface 601. The emitter pre-stressing fixing surface 601 is sealed with the upper guide rail pre-stressing fixing surface 701 and the lower guide rail pre-stressing fixing surface 801 through the FPC sealing surface 602. Furthermore, the upper guide rail 7 and the lower guide rail 8 are locked and pre-stressed by the guide rail screws 21.

[0045] like Figure 1 、 Figure 10 、 Figure 11As shown. The top of the airway waterproof silicone sleeve 5 is provided with a supporting inner ring that matches the top surface of the heating chamber upper bracket 4. The center hole of the supporting inner ring matches the size of the cigarette channel inlet. The top of the supporting inner ring is provided with a first silicone sleeve sealing surface 501, and the bottom is provided with a fourth silicone sleeve sealing surface 504. After the airway waterproof silicone sleeve 5 is mounted on the heating chamber upper bracket 4, the fourth silicone sleeve sealing surface 504 abuts against the heating chamber upper bracket sealing surface 402 on the top surface of the heating chamber upper bracket 4 to achieve a pre-compression seal. The first silicone sleeve sealing surface 501 abuts against the lower cover sealing surface 901 to achieve a pre-compression seal.

[0046] like Figure 17 As shown, using the above structure, the control principle of this device is as follows:

[0047] according to Figure 5 Push the dust cover 17 in the direction of the arrow shown. When the dust cover contact 1701 touches the detection switch 19, the PCB control board 14 is powered on. The PCB control board 14 controls the infrared emitting tube 1 to continuously emit infrared light and the infrared receiving tube 2 to continuously receive infrared light.

[0048] If a cigarette 3 is inserted into the upper bracket 4 of the heating chamber within 30 seconds, the cigarette blocks the infrared light emitted by the infrared emitting tube 1, so that the infrared receiving tube 2 cannot receive the infrared light. Based on this state, the PCB control board 14 starts heating the heating chamber 15. The heating chamber 15 works for 240 seconds and then shuts down. Figure 5 、 Figure 6 shown.

[0049] If the cigarette 3 is not inserted into the upper bracket 4 of the heating chamber within 30 seconds, the vibration motor 20 vibrates to remind the user to insert the cigarette 3. After the vibration motor 20 vibrates twice, if the user still has not inserted the cigarette 3, the PCB control board 14 will turn off the power based on this status.

[0050] If the heating time of the heating chamber 15 is less than 240 seconds, the cigarette 3 is pulled out of the heating chamber upper bracket 4, and the infrared receiving tube 2 resumes to continuously receive infrared light, the PCB control board 14 uses this state as a basis to stop heating the heating chamber 15, and the infrared heating tubes 1 and 2 return to the state where the cigarette 3 is not inserted.

[0051] If no cigarette 3 is inserted, the user can also directly close the dust cover 17 to shut down the device.

[0052] If the user finishes smoking and pulls out the cigarette 3 and forgets to close the dust cover 17, the next time the user uses the device, the dust cover 17 must be closed and then opened before the device can be started normally. Otherwise, the cigarette 3 will be inserted into the heating chamber bracket 4 and the heating chamber 15 will not heat up. This can reduce standby power consumption and increase battery life. Figure 17 The working logic diagram is shown.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A photoelectric self-starting cigarette heating device, comprising a housing, characterized in that: The shell is provided with a cigarette insertion port for inserting cigarettes, and the cigarette insertion port is connected with the smoking chamber. The smoking chamber includes a cigarette channel for cigarettes to pass through, a heating chamber for heating cigarettes and an air intake chamber for air intake. The cigarette channel connects the cigarette insertion port with the heating chamber, and the air intake of the heating chamber is connected with the air intake chamber. A sensor for detecting the insertion of cigarettes is provided on the inner wall of the cigarette channel. The sensor is connected to the heating chamber through a PCB control board. The sensor detects whether a cigarette is inserted into the cigarette channel, thereby controlling the opening and closing of the heating chamber.

2. The photoelectric self-starting cigarette heating device according to claim 1, characterized in that: The smoking chamber is composed of a heating chamber upper bracket, a heating chamber and a heating chamber lower bracket. The heating chamber is coaxially fixed between the heating chamber upper bracket and the heating chamber lower bracket. A through hole is provided in the middle of the heating chamber upper bracket to form a cigarette channel for cigarettes to pass through. The heating chamber lower bracket is provided with an air inlet chamber connected to the heating chamber.

3. The photoelectric self-starting cigarette heating device according to claim 2, characterized in that: The sensor uses a symmetrical infrared sensor.

4. The photoelectric self-starting cigarette heating device according to claim 3, characterized in that: The sensor includes an infrared emitting tube and an infrared receiving tube. Two first mounting holes are arranged opposite to each other on the side walls of the upper bracket of the heating chamber. An airway waterproof silicone sleeve that matches the size of the upper bracket of the heating chamber is mounted on the outer surface of the upper bracket of the heating chamber. A second mounting hole is provided on the side wall of the airway waterproof silicone sleeve at a position corresponding to the first mounting hole. After the airway waterproof silicone sleeve is mounted on the upper bracket of the heating chamber, the first mounting hole and the second mounting hole are connected to each other. The first mounting hole and the second mounting hole together constitute a lens mounting hole. A waterproof lens is sealed and installed in the lens mounting hole. The infrared emitting tube and the infrared receiving tube are arranged on the outside of the airway waterproof silicone sleeve and are respectively installed in two waterproof lenses that are arranged opposite to each other.

5. The photoelectric self-starting cigarette heating device according to claim 4, characterized in that: The waterproof lens includes a light-transmitting sheet that matches the overall depth and size of the lens mounting hole and a sealing retaining ring fixed around the light-transmitting sheet; the waterproof lens includes a first lens sealing surface arranged on the inner side of the sealing retaining ring and a second lens sealing surface arranged on the outer side of the light-transmitting sheet, the airway waterproof silicone sleeve is provided with a third silicone sleeve sealing surface on the outer side near the second mounting hole, and the airway waterproof silicone sleeve is provided with a second silicone sleeve sealing surface on the inner side of the second mounting hole. After the waterproof lens is installed in the lens mounting hole, the first lens sealing surface abuts against the third silicone sleeve sealing surface to achieve pre-compression sealing, and the second lens sealing surface abuts against the second silicone sleeve sealing surface to achieve pre-compression sealing.

6. The photoelectric self-starting cigarette heating device according to claim 5, characterized in that: The shell includes an upper bracket, a lower bracket, an upper cover and a lower cover. The upper bracket and the lower bracket are arranged relative to each other, and the upper bracket and the lower bracket are assembled in a detachable manner. After the upper bracket and the lower bracket are assembled, a first cavity for fixing the battery, a second cavity for installing the smoking chamber, and a third cavity for fixing the PCB control board are formed inside. The upper bracket can be detachably installed in the upper cover, and the lower bracket can be detachably installed in the lower cover. A through hole is provided on the lower cover to form the cigarette plug-in port. A lower cover sealing surface matching the airway waterproof silicone sleeve is provided on the inner side of the lower cover. After the upper cover and the lower cover are connected, the top of the airway waterproof silicone sleeve abuts against the sealing surface of the lower cover to achieve sealing, and the battery is electrically connected to the PCB control board.

7. The photoelectric self-starting cigarette heating device according to claim 6, characterized in that: A vibration motor is also installed in the lower bracket, and the vibration motor is electrically connected to the PCB control board.

8. The photoelectric self-starting cigarette heating device according to claim 7, characterized in that: The upper cover and the lower cover are respectively provided with an upper guide rail and a lower guide rail on the side close to the cigarette insertion port. After the upper cover and the lower cover are connected, a slide rail is formed between the upper guide rail and the lower guide rail. The lower cover is also provided with a slide groove connected to the slide rail. A dust cover for opening and closing the cigarette insertion port is provided on the outer side of the lower cover. A slider is provided at the bottom of the dust cover, and the slider slides through the slide groove and is installed in the slide rail. A detection switch is installed in the slide rail on the side away from the cigarette insertion port, and a dust cover contact matching the detection switch is installed on the slider. The detection switch is electrically connected to the PCB control board. When the dust cover is opened to the full extent, the dust cover contact touches the detection switch, and the detection switch controls the PCB control board to be powered on, and the PCB control board controls the operation of the infrared transmitting tube and the infrared receiving tube; when the dust cover is closed, the dust cover contact is disengaged from the detection switch, and the detection switch controls the PCB control board to be powered off.

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