Self-cleaning heating appliance

Abstract

The utility model discloses a self-cleaning heating appliance which is used for heating cigarettes, the self-cleaning heating appliance comprises a shell, a heating body and a sliding pipe, the shell is provided with a sliding pipe cavity with an opening facing one end, the sliding pipe is contained in the sliding pipe cavity and can move in the sliding pipe cavity in the longitudinal direction within a preset range, and the heating body is arranged in the sliding pipe cavity. The bottom of the sliding pipe is provided with a heating body hole for the heating body to be inserted, and the pipe wall of the sliding pipe is provided with a protruding part protruding inwards, so that when a cigarette is inserted, the cigarette enters the sliding pipe, and after the cigarette is inserted in place, the end of the cigarette is inserted by the heating body, and the peripheral wall is clamped by the protruding part. When the cigarette is pulled out, the sliding pipe is driven to move together, the cigarette is separated from the heating body under the support of the bottom of the sliding pipe, the sliding pipe stops moving after moving by a preset distance, and the cigarette overcomes the clamping force of the protruding part and is separated from the sliding pipe. According to the self-cleaning heating appliance, tobacco shreds adhering to the heating body can be automatically cleaned, operation is easy, and the experience feeling of a user is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of heated cigarette technology, and in particular to a self-cleaning heating appliance. Background Technology

[0002] Center heating elements are typically cylindrical or sheet-shaped, inserted into the tobacco from the end of the cigarette. Center heating is characterized by a small heating area and high temperature, reaching up to 350°C. During the carbonization process, the layer of tobacco closest to the heating element is more severely carbonized. This carbonization process releases a viscous liquid, causing the tobacco near the heating element to stick to it. When the user removes the cigarette from the heating device, the tobacco may detach entirely from the filter or partially fall off, leaving some or all of the tobacco inside the heating chamber and rendering the device unusable.

[0003] To ensure the tobacco is pulled out along with the filter when the cigarette is removed from the heating chamber, existing heated tobacco products have a specially designed outer sleeve that moves axially with the cigarette for cleaning. However, after each heating cycle, the user must first remove the outer sleeve, then pull the cigarette out, and finally reattach the sleeve to the device. Sometimes, if the user accidentally removes the cigarette first, tobacco remains inside the device, requiring secondary cleaning. Therefore, while this solution solves the problem of tobacco sticking to the heating element, the operation is cumbersome and the user experience is poor. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a self-cleaning heating device that can automatically clean the tobacco shreds adhering to the heating element.

[0005] The technical solution provided by this utility model is as follows:

[0006] A self-cleaning heating appliance for heating cigarettes includes a housing, a heating element, and a sliding tube. The housing has a sliding tube cavity open at one end. The sliding tube is housed in the sliding tube cavity and can move longitudinally within the sliding tube cavity within a preset range. The bottom of the sliding tube has a heating element hole for inserting the heating element. The wall of the sliding tube has a protrusion that protrudes inward, so that when the cigarette is inserted, it enters the sliding tube. After insertion, the end of the cigarette is inserted by the heating element, and the peripheral wall is clamped by the protrusion. When the cigarette is pulled out, it drives the sliding tube to move together, so that the cigarette is detached from the heating element under the support of the bottom of the sliding tube. The sliding tube stops moving after moving a preset distance, and the cigarette overcomes the clamping force of the protrusion and detaches from the sliding tube.

[0007] Preferably, the cigarette includes a filter tip and a tobacco segment, the protrusion is located at the top of the sliding tube wall to clamp the filter tip, and the heating element is inserted into the tobacco segment after the cigarette is inserted into place.

[0008] Preferably, the sliding tube wall is hollowed out to form multiple longitudinally extending elastic arms, and a raised spherical surface is stamped on each elastic arm to form the protrusion. Each elastic arm deforms outward when squeezed by a cigarette.

[0009] Preferably, the end of the sliding cavity is flared to provide clearance for the outward deformation of the elastic arm.

[0010] Preferably, there are multiple protrusions, which are evenly arranged along the periphery of the pipe wall.

[0011] Preferably, the end of the sliding tube is provided with a guide port for easy insertion of a cigarette.

[0012] Preferably, the bottom of the sliding tube is also provided with multiple air inlets.

[0013] Preferably, the sliding tube cavity is provided with a lower limiting platform at the bottom and an upper limiting platform at the top. The upper limiting platform and the lower limiting platform together enable the sliding tube to move longitudinally within a preset range in the sliding tube cavity.

[0014] Preferably, the housing includes a fixed upper cover and a lower cover, and the sliding tube cavity, the upper limit platform and the lower limit platform are all located on the upper cover.

[0015] Preferably, the lower cover and the upper cover are respectively provided with a recess and a protrusion at opposite ends, the protrusion is inserted into the recess, and the sliding tube cavity is located inside the protrusion.

[0016] Compared to existing technologies, this self-cleaning heating appliance features a sliding tube with a protrusion that can be driven by the cigarette itself to achieve a fixed-distance limiting movement, thereby automatically cleaning the tobacco stuck to the heating element. It is simple to operate and significantly improves the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the self-cleaning heater of this utility model when the cigarette is just inserted;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the self-cleaning heating appliance after the cigarette is inserted into place.

[0020] Figure 3 for Figure 1 The diagram shows the structure of the self-cleaning heater when the cigarette is just pulled out.

[0021] Figure 4 for Figure 1 The diagram shows the structure of the self-cleaning heater when the sliding tube contacts the upper limit platform during the cigarette stick removal process.

[0022] Figure 5 for Figure 1 The diagram shows the structure of the self-cleaning heater after the cigarette is removed.

[0023] Figure 6 for Figure 1 A three-dimensional schematic diagram of the sliding tube in the self-cleaning heating appliance shown;

[0024] Figure 7 for Figure 6 The front view of the sliding tube shown;

[0025] Figure 8 for Figure 6 The sliding tube shown is in a bottom view. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0030] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0031] like Figures 1 to 8 As shown, this embodiment of the present invention provides a self-cleaning heating device for heating a cigarette stick 1. The cigarette stick 1 includes a filter tip 101 and a tobacco segment 102, the tobacco segment 102 containing tobacco shreds.

[0032] The self-cleaning heating appliance includes a housing, a heating element 3, a sliding tube 2, a PCB board 4, a battery 5, and a power button 8. A heating element mounting base 301 is located at the base of the heating element 3, and the heating element mounting base 301 is connected to the PCB board 4. The battery 5 is connected to the PCB board 4 to provide energy to the heating element 3, and the power button 8 controls the on / off state of the PCB board 4.

[0033] The housing includes a fixed upper cover 7 and a lower cover 6. The lower cover 6 and upper cover 7 each have a recess and a protrusion at their opposite ends, with the protrusion inserted into the recess. The housing has a sliding tube cavity 701, open at one end to accommodate the sliding tube 2, located within the protrusion of the upper cover 7. The sliding tube cavity 701 has a lower limiting platform 702 at its bottom and an upper limiting platform 703 at its top. The upper limiting platform 703 and the lower limiting platform 702 together allow the sliding tube 2 to move longitudinally within the sliding tube cavity 701 within a preset range. Both the upper limiting platform 703 and the lower limiting platform 702 are located on the upper cover 7. This structure simplifies the housing structure, ensures reliable fit between the upper and lower covers, and guarantees precise movement of the sliding tube 2.

[0034] The sliding tube 2 is housed in the sliding tube cavity 701 and can move longitudinally within the sliding tube cavity 701 within a preset range. The sliding tube 2 is made of SUS304, which is resistant to acids and alkalis. The wall thickness of the sliding tube 2 is between 0.15-0.2mm, and it occupies little space.

[0035] like Figures 6 to 8As shown, the bottom center of the sliding tube 2 has a heating element hole 204 for inserting the heating element 3, and multiple air inlets 205 are provided around it. The sliding tube 2 has a protruding part on its wall, so that when the cigarette 1 is inserted, it enters the sliding tube 2. After insertion, the end of the cigarette 1 is inserted by the heating element 3, and the peripheral wall is clamped by the protruding part. When the cigarette 1 is pulled out, it moves the sliding tube 2 together, causing the cigarette to detach from the heating element 3 under the support of the bottom of the sliding tube 2. The sliding tube 2 stops moving after moving a preset distance, and the cigarette 1 overcomes the clamping force of the protruding part and detaches from the sliding tube 2. In this embodiment, the protruding part is located at the top of the sliding tube 2 wall to clamp the filter tip 101. After the cigarette 1 is inserted, the heating element 3 is inserted into the tobacco segment 102. The protruding part clamping the filter tip 101 can prevent some tobacco from sticking to the heating element 3 and also prevent the tobacco from falling off entirely. In other embodiments, the protruding part can also clamp the tobacco segment 102, but in this case, it can only prevent some tobacco from sticking to the heating element 3.

[0036] In this embodiment, the wall of the sliding tube 2 is hollowed out to form multiple longitudinally extending elastic arms 202. A raised spherical surface 203 is stamped onto each elastic arm 202, forming a protrusion. Each elastic arm 202 deforms outward when squeezed by a cigarette. There are multiple protrusions (e.g., 2-8), evenly distributed along the periphery of the tube wall. Of course, in other embodiments, the protrusions can also adopt other structures, such as not having elastic arms but directly stamping a raised spherical surface onto the tube wall. However, providing elastic arms offers better elasticity, provides appropriate clamping force, and avoids plastic deformation. Correspondingly, the end of the sliding tube cavity 701 is flared to provide space for the outward deformation of the elastic arms 202. The end of the sliding tube 2 is also provided with a guide port 201 for easy insertion of the cigarette 1, the opening diameter of which is larger than the diameter of the cigarette 1.

[0037] Its working principle is as follows: When cigarette 1 is inserted into the guide port 201 of the sliding tube 2, if... Figure 1 As shown, cigarette 1 pushes sliding tube 2 downward in sliding tube cavity 701. Sliding tube 2 stops moving after reaching lower limit platform 702. Cigarette 1 continues to move downward, and the outer periphery of cigarette 1 filter tip 101 presses against the raised spherical surface 203, causing elastic arm 202 to open and clamp filter tip 101. Cigarette 1 stops moving after inserting into the bottom of sliding tube 2. Figure 2 As shown. When the power button 8 is turned on, after the heating element 3 heats the tobacco for a certain period of time, the tobacco sticks to the heating element 3. When the cigarette 1 is pulled out, because the elastic arm 202 clamps the filter 101, when the cigarette 1 moves upward, the bottom of the sliding tube 2 drives the tobacco segment 102 to move together, causing the tobacco segment 102 to detach from the heating element 3, as shown. Figure 3 As shown. When the tobacco segment 102 and the sliding tube 2 continue to move upward, the sliding tube 2 stops moving after hitting the upper limit platform 703, as... Figure 4 As shown. Cigarette 1 continues to move upward and detaches from sliding tube 2, while sliding tube 2 remains inside sliding tube cavity 701, as... Figure 5 As shown.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-cleaning heating appliance for heating a cigarette, characterized in that, The self-cleaning heating appliance includes a housing, a heating element, and a sliding tube. The housing has a sliding tube cavity that opens to one end. The sliding tube is housed in the sliding tube cavity and can move longitudinally within the sliding tube cavity within a preset range. The bottom of the sliding tube has a heating element hole for inserting the heating element. The wall of the sliding tube has a protrusion that protrudes inward, so that when a cigarette is inserted, it enters the sliding tube. After insertion, the end of the cigarette is inserted by the heating element, and the peripheral wall is clamped by the protrusion. When the cigarette is pulled out, it drives the sliding tube to move together, so that the cigarette is detached from the heating element under the support of the bottom of the sliding tube. The sliding tube stops moving after moving a preset distance, and the cigarette overcomes the clamping force of the protrusion and detaches from the sliding tube.

2. The self-cleaning heating appliance of claim 1, wherein, The cigarette includes a filter tip and a tobacco section. The protrusion is located at the top of the sliding tube wall to clamp the filter tip. After the cigarette is inserted into place, the heating element is inserted into the tobacco section.

3. The self-cleaning heating appliance of claim 1, wherein, The sliding tube wall is hollowed out to form multiple longitudinally extending elastic arms. Each elastic arm is stamped with a convex spherical surface, which forms the protrusion. Each elastic arm deforms outward when squeezed by a cigarette.

4. The self-cleaning heating appliance of claim 3, wherein the heating element is a heating coil. The sliding cavity is flared at the end to provide clearance for the outward deformation of the elastic arm.

5. The self-cleaning heating appliance of claim 1, wherein, There are multiple protrusions, which are evenly arranged along the periphery of the pipe wall.

6. The self-cleaning heating appliance of claim 1, wherein, The end of the sliding tube is provided with a guide port for easy insertion of a cigarette.

7. The self-cleaning heating appliance of claim 1, wherein, The bottom of the sliding tube is also provided with multiple air inlets.

8. The self-cleaning heating appliance of claim 1, wherein, The sliding tube cavity is provided with a lower limiting platform at the bottom and an upper limiting platform at the top. The upper and lower limiting platforms together enable the sliding tube to move longitudinally within a preset range in the sliding tube cavity.

9. The self-cleaning heating appliance as described in claim 8, characterized in that, The housing includes a fixed upper cover and a lower cover, and the sliding tube cavity, upper limit platform and lower limit platform are all located on the upper cover.

10. The self-cleaning heating appliance of claim 9, wherein, The lower cover and the upper cover are respectively provided with a recess and a protrusion at opposite ends. The protrusion is inserted into the recess, and the sliding tube is located inside the protrusion.

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