Retractable heating element

Abstract

The invention discloses a retractable heating element, which includes a cylinder-shaped structure composed of a plurality of heating units (5). The heating units (5) are of X-shaped structures formedby crossing of two or two sets of heating pins (1), crossing points of the two or two sets heating pins (1) are connected by insulated connecting shafts (2), the two ends of the heating pins (1) are movably connected with electrically conductive connecting rotating shafts (3), the adjacent heating units (5) share the electrically conductive connection rotating shafts (3), and the heating pins (1)are coated with insulated coatings at the non-connecting positions of the insulated connecting rotating shaft (2) and the electrically conductive connecting rotating shaft (3). The retractable heatingelement does not need to be as a traditional heating cup, a heating material wraps a substrate of a ceramic or a stainless steel tube, heating is avoided from transferring to the substrate of the ceramic or the stainless steel tube during heating and directly transferred to cigarettes, and heating loss caused by secondary heating transfer is avoided.

Description

technical field [0001] The invention belongs to the technical field of electronic cigarettes, and in particular relates to a retractable heating element that can be used for heating and baking smoking products. Background technique [0002] Existing heating-not-burning tobacco can be roughly divided into central heating, such as heating sheets, heating rods, etc.; circumferential heating, such as heating tubes. The existing heat-not-burn electronic cigarettes on the market are roughly divided into three categories according to the size of the cigarettes, 7.7mm, 7.3mm and thinner cigarettes with smaller diameters. [0003] The existing heat-not-burn cigarette cups on the market are all designed according to the size of the cigarettes, forming a special mode for cigarettes. Due to the different sizes of cigarettes, heating cups of different sizes are required to provide heat for them, forming a In the case of special cigarettes, cigarettes of different sizes need heating cups...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a retractable heating element, which effectively solves the problems of lack of versatility, high heat loss and low utilization rate of existing heat-not-burn cups

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