A universal heating cigarette heating appliance

Abstract

The application discloses a universal heating cigarette heating device, which comprises an extractor and a spring pressing assembly. The extractor is provided with a first opening and an equilateral polygonal inner cavity. The first opening and the inner cavity are communicated, and the inner cavity is used for inserting a cigarette. The spring pressing assembly is arranged on at least one side wall surface of the inner cavity. When the spring pressing assembly is in a natural state, the diameter of an inscribed circle of a polygon formed by the spring pressing assembly and the remaining side wall surfaces of the inner cavity is less than a first set value. When the spring pressing assembly is in a maximum compression state, the diameter of the inscribed circle of the polygon formed by the spring pressing assembly and the remaining side wall surfaces of the inner cavity is greater than a second set value, and the first set value is less than the second set value. In the application, the spring pressing assembly is arranged in the inner cavity of the extractor, so that the heating cigarette with different diameters can be applied, and one heating cigarette heating device can be applied to the heating cigarette with different specifications, thereby saving the cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smoking sets, in particular to a universal heating cigarette heating device. BACKGROUND

[0002] In recent years, new types of tobacco products represented by electronic cigarettes and heated cigarettes have rapidly emerged. Heated cigarettes are heated by a heating device, and the heating temperature is usually below 400℃, which is much lower than the combustion temperature of traditional cigarettes. Therefore, the composition of the released smoke can be controlled, and the production of harmful substances can be greatly reduced. The physiological toxicity of heated cigarette aerosol is also much lower than that of traditional cigarettes. At the same time, because it has the appearance of traditional cigarettes, it is more easily accepted by consumers. Therefore, as a beneficial supplement to traditional cigarettes, heated cigarettes have attracted attention at home and abroad due to their own characteristics. The special heating device is needed for heated cigarettes. Because the circumferential specifications of heated cigarette products launched by different enterprises are different, the heating devices that are suitable for them are also different. Therefore, at present, different manufacturers launch different specifications of heating devices for different cigarette specifications, which increases the cost. SUMMARY

[0003] An object of the present application is to provide a new technical solution for a universal heated cigarette heating device to solve the above problems. By providing a variable-diameter extractor, the purpose of being suitable for different specifications of cigarettes is achieved, the universality of the smoking set is increased, and the cost is saved.

[0004] According to a first aspect of the present application, a universal heated cigarette heating device is provided, comprising: an extractor and a springing assembly; the extractor is provided with a first opening and an equilateral polygonal inner cavity, the first opening and the inner cavity are in communication, and the inner cavity is used for inserting a cigarette into the inner cavity, at least one side wall surface of the inner cavity is provided with a springing assembly; in the case that the springing assembly is in a natural state, the diameter of the incircle of the polygon formed by the springing assembly and the remaining side wall surface of the inner cavity is less than a first set value; in the case that the springing assembly is in a maximum compression state, the diameter of the incircle of the polygon formed by the springing assembly and the remaining side wall surface of the inner cavity is greater than a second set value, and the first set value is less than the second set value.

[0005] In one embodiment, the springing assembly comprises an elastic member and a pressing plate, one side of the elastic member is attached to the side wall surface of the inner cavity, and the other side of the elastic member is connected to the pressing plate.

[0006] In one embodiment, a bayonet is formed on one side of the extractor close to the first opening, and one end of the pressing plate close to the first opening is clamped in the bayonet.

[0007] In one embodiment, one end of the pressing plate close to the bayonet is provided with a circular arc surface.

[0008] In one embodiment, the sidewall of the first opening is provided with a chamfer.

[0009] In one embodiment, the inner cavity is a regular quadrilateral inner cavity.

[0010] In one embodiment, the number of the elastic pressing assemblies is four, which are respectively arranged on the four sidewall surfaces of the inner cavity; in the natural state of the elastic pressing assemblies, the diameter of the incircle of the regular quadrilateral formed by the four elastic pressing assemblies is less than the first set value; in the maximum compression state of the elastic pressing assemblies, the diameter of the incircle of the regular quadrilateral formed by the four elastic pressing assemblies is greater than the second set value.

[0011] In one embodiment, the universal heating cigarette heating appliance further comprises a heating device, one end of the heating device is fixedly connected with the bottom wall of the inner cavity, and the other end of the heating device extends into the inner cavity; the bottom wall of the inner cavity is arranged opposite to the first opening.

[0012] In one embodiment, the bottom wall of the inner cavity is provided with a first air hole and a second air hole, the distance between the first air hole and the central axis of the inner cavity is less than half of the first set value; the distance between the second air hole and the central axis of the inner cavity is greater than half of the first set value and less than half of the second set value.

[0013] In one embodiment, the universal heating cigarette heating appliance further comprises a shell, the shell is provided with a mounting cavity, the extractor is located in the mounting cavity, and there is a gap between the inner wall of the mounting cavity and the outer wall of the extractor.

[0014] In one embodiment, the shell is further provided with an air inlet hole which communicates the outside with the mounting cavity.

[0015] In one embodiment, the bottom wall of the inner cavity is provided with a first air hole and a second air hole, the distance between the first air hole and the central axis of the inner cavity is less than half of the first set value; the distance between the second air hole and the central axis of the inner cavity is greater than half of the second set value.

[0016] In one embodiment, the number of the first air holes and the second air holes is four, and the four first air holes and the four second air holes are uniformly distributed around the central axis of the inner cavity.

[0017] In one embodiment, the heating device comprises a heating core and a power supply, one end of the heating core is located in the inner cavity, the other end of the heating core passes through the bottom wall of the inner cavity and is connected with the power supply, and the power supply is arranged at the bottom of the shell.

[0018] The universal heating cigarette heating appliance provided in the application comprises an extractor and a springing and pressing assembly; the extractor is provided with a first opening and an equilateral polygonal inner cavity, the first opening and the inner cavity are communicated, and the inner cavity is used for inserting a cigarette; the springing and pressing assembly is arranged on at least one side wall surface of the inner cavity; in the case that the springing and pressing assembly is in a natural state, the diameter of an inscribed circle of a polygon formed by the springing and pressing assembly and the remaining side wall surfaces of the inner cavity is less than a first set value; in the case that the springing and pressing assembly is in a maximum compressed state, the diameter of an inscribed circle of a polygon formed by the springing and pressing assembly and the remaining side wall surfaces of the inner cavity is greater than a second set value, and the first set value is less than the second set value. In the application, the springing and pressing assembly is arranged in the inner cavity of the extractor, so that cigarettes with different diameters can be applied, and one heating appliance can be applied to cigarettes with different specifications, thereby saving cost.

[0019] Other features and advantages of the application will become apparent from the following detailed description of exemplary embodiments of the application with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0021] Figure 1 A cross-sectional view of a front view of the universal heating cigarette heating appliance provided in the embodiment of the application is shown.

[0022] Figure 2 A cross-sectional view of a front view of the universal heating cigarette heating appliance provided in the embodiment of the application is shown. Figure 1 A cross-sectional view of a front view of the universal heating cigarette heating appliance provided in the embodiment of the application is shown.

[0023] Legend of reference numerals: 100 - extractor; 110 - first opening; 120 - inner cavity; 130 - bayonet; 140 - first air hole; 150 - second air hole; 200 - springing and pressing assembly; 210 - elastic member; 220 - pressing sheet; 221 - arc surface; 300 - heating device; 400 - shell; 410 - mounting cavity; 500 - heating cigarette. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present application will now be described in detail with reference to the drawings. Note that the relative arrangement of the components and steps illustrated in these embodiments, numerical expressions, and numerical values are merely meant to be illustrative, not limiting the scope of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the scope of the application or its applications or uses. Techniques, methods, and devices known to those of ordinary skill in the art can not be discussed in detail, but should be considered as part of the specification, where appropriate. In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative, not limiting. Thus, other examples of the exemplary embodiments can have different values.

[0025] As Figure 1 and Figure 2 shown, the universal heating cigarette heating appliance provided by the embodiments of the present application comprises: an extractor 100 and a springing assembly 200; the extractor 100 is provided with a first opening 110 and an equilateral polygonal inner cavity 120, the first opening 110 and the inner cavity 120 are communicated, and the inner cavity 120 is used for inserting a heating cigarette 500 into the inner cavity 120, at least one side wall surface of the inner cavity 120 is provided with the springing assembly 200, those skilled in the art can understand that one side of the springing assembly 200 away from the side wall surface is at least partially parallel to the side wall surface, and the parallel part is farthest away from the side wall surface; in the case that the springing assembly 200 is in a natural state, the diameter of the inner tangent circle of the polygon composed of the springing assembly 200 and the rest of the side wall surface of the inner cavity 120 is less than a first set value; in the case that the springing assembly 200 is in a maximum compression state, the diameter of the inner tangent circle of the polygon composed of the springing assembly 200 and the rest of the side wall surface of the inner cavity 120 is greater than a second set value, those skilled in the art can understand that the springing assembly 200 and the rest of the side wall surface of the inner cavity 120 form a new cavity, which is also a regular polygonal cavity, the first set value is less than the second set value.

[0026] It can be understood by those skilled in the art that the heated cigarette 500 has different diameter types such as thick cigarettes and thin cigarettes, and the diameters of the same thick cigarettes or thin cigarettes can also have differences. In the embodiment, the first set value and the second set value are the maximum diameter and the minimum diameter of the heated cigarette 500 that can be accommodated, that is, the first set value is the minimum diameter of the heated cigarette 500 that can be adapted by the universal heated cigarette heating appliance provided in the embodiment, and the second set value is the maximum diameter that can be adapted by the universal heated cigarette heating appliance provided in the embodiment. Those skilled in the art can set the first set value and the second set value according to the range of the diameter of the heated cigarette 500 that can be adapted. It can also be understood by those skilled in the art that, in order to enable the heated cigarette 500 with the minimum diameter to be stably inserted into the inner cavity 120, generally, the first set value is slightly smaller than the minimum diameter of the heated cigarette 500 that can be adapted, so as to prevent the heated cigarette 500 with the small diameter from falling out of the inner cavity 120; similarly, the second diameter is slightly larger than the maximum diameter of the heated cigarette 500 that can be adapted, so as to avoid that the force applied to the heated cigarette 500 by the elastic pressing assembly 200 is too large, which causes the surface of the heated cigarette 500 to be damaged or broken. The specific setting can be adjusted according to actual conditions by those skilled in the art.

[0027] In the embodiment, the elastic pressing assembly 200 is arranged on the side wall surface of the inner cavity 120, so that the side wall surface of the inner cavity 120 and the elastic pressing assembly 200 form a new cavity, and the new cavity is also a regular polygon, and the diameter of the inscribed circle in the new cavity can be adjusted according to the elastic pressing assembly 200, so that the heated cigarette 500 with different diameters can be inserted into the new cavity, the use range of the embodiment is increased, and the universal heated cigarette heating appliance provided in the embodiment can be applied to the heated cigarette 500 with different diameters, thereby reducing the use cost.

[0028] In one embodiment, the elastic pressing assembly 200 includes an elastic member 210 and a pressing plate 220, one side of the elastic member 210 is attached to the side wall surface of the inner cavity 120, and the other side of the elastic member 210 is connected with the pressing plate 220. The elastic member 210 is attached to the side wall surface of the inner cavity 120, which is simple to process and has a long service life.

[0029] In one embodiment, the extractor 100 is provided with a bayonet 130 on one side close to the first opening 110, and one end of the pressing plate 220 is clamped in the bayonet 130. In the embodiment, the pressing plate 220 is movably arranged on the surface of the elastic member 210, that is, the pressing plate 220 can be separately taken out or installed, so that the processing is facilitated. In the embodiment, the bayonet 130 is arranged on the first opening 110 of the extractor 100 for mounting the pressing plate 220, which is simple and convenient to operate.

[0030] In one embodiment, the pressing piece 220 is provided with a circular arc surface 221 near one end of the bayonet 130. As can be appreciated by those skilled in the art, during the process of inserting the heatable cigarette 500 into the inner cavity 120 from the first opening 110, the heatable cigarette 500 needs to be in contact with the pressing piece 220, and in the case that the elastic member 210 is not stressed, the diameter of the inscribed circle of the cavity formed by the pressing piece 220 around the inner cavity 120 is smaller than the first set value, i.e., smaller than the diameter of the heatable cigarette 500. During the process of inserting the heatable cigarette 500 into the inner cavity 120, the elastic member 210 is deformed by applying a force with a radial direction to the pressing piece 220, so that the diameter of the inscribed circle of the cavity formed by the pressing piece 220 gradually increases to adapt to the insertion of the heatable cigarette 500. In this process, the pressing piece 220 is provided in a circular arc shape, so that the force applied to the pressing piece 220 by the heatable cigarette 500 has a radial component when the heatable cigarette 500 comes into contact with the pressing piece 220, thereby facilitating the insertion of the heatable cigarette 500 into the inner cavity 120.

[0031] In one embodiment, the elastic modulus of the elastic member 210 is small, and the elastic member 210 has high-temperature resistance performance, so as to avoid failure of the elastic member 210 due to high temperature generated when the heating appliance heats the heatable cigarette 500. In the heating appliance, the temperature when the heatable cigarette 500 is heated is generally below 400 degrees Celsius, and therefore the temperature resistance performance of the elastic member 210 should be higher than 400 degrees Celsius to ensure safety. In this embodiment, the elastic member 210 can be selected from metal elastic sheets and the like. Of course, in the embodiment of the present application, the pressing piece 220 can also be provided as a pressing piece 220 with heat insulation performance, so as to reduce the requirement for high-temperature resistance of the elastic member 210, so that the elastic member 210 can be selected from rubber, thereby increasing the selectivity of the elastic member 210.

[0032] In the embodiment of the present application, the elastic modulus of the elastic member 210 needs to be small, so that the elastic member 210 can be elastically deformed under a small pressure. As can be appreciated by those skilled in the art, the surface strength of the heatable cigarette 500 is generally low, and therefore excessive force can cause deformation or even breakage of the surface of the heatable cigarette 500, so that the force applied to the elastic member 210 by the heatable cigarette 500 through the pressing piece 220 is also small, so that the elastic member 210 can be deformed under a small pressure, thereby adapting to heatable cigarettes 500 of different diameters. Therefore, the elastic modulus of the elastic member 210 needs to be small, so as to ensure that the elastic member 210 can be deformed when the heatable cigarette 500 is inserted, thereby avoiding blocking the insertion of the heatable cigarette 500 and ensuring that the universal heatable cigarette heating appliance provided in the embodiment of the present application can be normally used.

[0033] In one embodiment, the sidewall of the first opening 110 is provided with a chamfer. The heated cigarette 500 is inserted into the inner cavity 120 through the first opening 110, so that the chamfer provided on the sidewall of the first opening 110 serves as a guide for the insertion of the heated cigarette 500, facilitating the insertion of the heated cigarette 500. In this embodiment, the chamfer angle is 10-80 degrees.

[0034] In one embodiment, the inner cavity 120 is a regular quadrilateral inner cavity 120, i.e. a square inner cavity 120. This facilitates processing and increases the force receiving area during the insertion of the heated cigarette 500, so that the pressure received by the heated cigarette 500 is evenly distributed, avoiding damage to the heated cigarette 500 during insertion into the inner cavity 120.

[0035] In one embodiment, the number of the elastic pressing assemblies 200 is four, which are arranged on the four sidewalls of the inner cavity 120; in the natural state of the elastic pressing assembly 200, the diameter of the incircle of the regular quadrilateral formed by the four elastic pressing assemblies 200 is less than the first set value; in the maximum compression state of the elastic pressing assembly 200, the diameter of the incircle of the regular quadrilateral formed by the four elastic pressing assemblies 200 is greater than the second set value. Those skilled in the art can understand that when the inner cavity 120 is a regular quadrilateral inner cavity 120, by arranging four elastic pressing assemblies 200, the heated cigarette 500 is located at the center of the inner cavity 120 during insertion, i.e. the central axis of the heated cigarette 500 coincides with the central axis of the inner cavity 120, so that the heating element inserted into the bottom of the heated cigarette 500 also coincides with the central axis of the heated cigarette 500, thereby ensuring that the heating of the heated cigarette 500 along the radial direction is uniformly changed during the heating process, ensuring the heating efficiency and taste of the heated cigarette 500.

[0036] In one embodiment, the length of the portion of the elastic sheet that contacts the heat-not-burn cigarette 500 along the axial direction of the heat-not-burn cigarette 500 is 0.05-0.8 times the length of the heat-not-burn cigarette 500 when the heat-not-burn cigarette 500 is inserted into the cavity. Those skilled in the art can understand that the smaller the length ratio of the elastic sheet to the heat-not-burn cigarette 500, the smaller the length of the elastic sheet required, and the lower the cost, but the corresponding contact area is small, which leads to a large pressure applied by the elastic sheet to the heat-not-burn cigarette 500, resulting in deformation of the heat-not-burn cigarette 500; on the contrary, the larger the length ratio of the elastic sheet to the heat-not-burn cigarette 500, the larger the contact area between the elastic sheet and the heat-not-burn cigarette 500, and the smaller the pressure applied by the elastic sheet to the heat-not-burn cigarette 500, and the heat-not-burn cigarette 500 is more likely to maintain its original shape, which can improve the heating and burning effect of the heat-not-burn cigarette 500. Those skilled in the art can set the ratio according to actual conditions.

[0037] In one embodiment, the universal heat-not-burn cigarette heating appliance further comprises a heating appliance 300, one end of the heating appliance 300 is fixedly connected to the bottom wall of the inner cavity 120, and the other end of the heating appliance 300 extends into the inner cavity 120; the bottom wall of the inner cavity 120 is arranged opposite to the first opening 110. The heating appliance 300 is arranged on the bottom wall of the inner cavity 120, which is simple to process and convenient to use.

[0038] In one embodiment, a first air hole 140 and a second air hole 150 are formed in the bottom wall of the inner cavity 120, the distance between the first air hole 140 and the central axis of the inner cavity 120 is less than half of the first set value, and the distance between the second air hole 150 and the central axis of the inner cavity 120 is greater than half of the first set value and less than half of the second set value. Those skilled in the art can understand that the first air hole 140 and the second air hole 150 are suitable for air flow, which ensures that enough air enters the heat-not-burn cigarette 500 during heating, so that the heat-not-burn cigarette 500 can be fully heated. The position of the first air hole 140 can ensure that when the universal heat-not-burn cigarette heating appliance provided in this embodiment heats a heat-not-burn cigarette 500 with the smallest diameter, the bottom of the heat-not-burn cigarette 500 can cover the first air hole 140, so that the small-diameter heat-not-burn cigarette 500 can be used normally. The second air hole 150 is arranged to ensure that when a large-diameter heat-not-burn cigarette 500 is heated, enough air enters the inner cavity 120, so that the large-diameter heat-not-burn cigarette 500 can be fully heated.

[0039] The person skilled in the art can also understand that when the universal heating cigarette heating appliance is not in use or when the heating cigarette 500 is replaced, external air can enter the mounting cavity 410 through the first air hole 140 and the second air hole 150 to ensure that there is sufficient air in the mounting cavity 410, so that the heating cigarette 500 can be fully heated during the next use.

[0040] In one embodiment, the universal heating cigarette heating appliance further comprises a shell 400 provided with a mounting cavity 410, the extractor 100 is located in the mounting cavity 410, and there is a gap between the inner wall of the mounting cavity 410 and the outer wall of the extractor 100. There is a gap between the shell 400 and the extractor 100, and air is present in the gap. On the one hand, the gap ensures air supply to the first air hole 140 and the second air hole 150, so that the heating cigarette 500 can be fully heated. On the other hand, the gap functions as a heat insulating layer, which can prevent the user from being scalded when holding the appliance and ensure the safety of the user. The person skilled in the art can understand that the extractor 100 and the shell 400 can be connected by magnetic attraction or the bayonet 130. In this way, the extractor 100 and the shell 400 can be easily disassembled, so that the universal heating cigarette heating appliance provided in this embodiment is easy to maintain. In this embodiment, magnetic attraction is preferred. Specifically, the shell 400 is provided with a second opening that is in communication with the mounting cavity 410, and the second opening of the mounting cavity 410 is further provided with a recess. The universal heating cigarette heating appliance further comprises a magnetic ring, and one end of the extractor 100 close to the first opening 110 is embedded in the inner circle of the magnetic ring, and the magnetic ring is magnetically attracted and arranged in the recess.

[0041] In one embodiment, the shell 400 is further provided with an air inlet hole that is in communication with the external environment and the mounting cavity 410. In this way, during use of the universal heating cigarette heating appliance provided in this embodiment, sufficient air can enter the mounting cavity through the air inlet hole, and then enter the inner cavity 120 through the first air hole 140 and / or the second air hole 150, so as to ensure that there is sufficient air in the inner cavity 120, and the heating cigarette 500 can be fully combusted. The person skilled in the art can understand that the air inlet hole can be arranged at any position of the shell 400, and the number and size of the air inlet hole can be set as needed by the person skilled in the art, but generally, the air inlet hole is preferably arranged close to the bottom to facilitate air circulation. In addition, the size of the air inlet hole should not be too large to avoid affecting the appearance. Specifically, the person skilled in the art can set the air inlet hole as needed, and the present application does not limit the air inlet hole.

[0042] In one embodiment, the bottom wall of the inner cavity 120 is provided with a first air hole 140 and a second air hole 150, the distance between the first air hole 140 and the central axis of the inner cavity 120 is less than half of the first set value, and the distance between the second air hole 150 and the central axis of the inner cavity 120 is greater than half of the second set value. In this embodiment, the first air hole 140 is used to communicate with the outside, so that air from the outside can enter the installation cavity 410, thereby ensuring that the universal heating cigarette heating appliance provided in the embodiment can be fully heated during use. Since the distance between the second air hole 150 and the central axis of the inner cavity 120 is greater than half of the second set value, at least part of the second air hole 150 will not be covered by the heated cigarette 500, thereby facilitating the flow of air from the second air hole 150 into the inner cavity 120, so that when the heated cigarette 500 is heated in the inner cavity 120, the air in the inner cavity is evenly distributed and flows smoothly, which is beneficial to the full heating of the heated cigarette 500.

[0043] In one embodiment, the number of the first air hole 140 and the second air hole 150 is four, and the four first air holes 140 and the four second air holes 150 are evenly distributed around the central axis of the inner cavity 120. In this way, the full heating of the heated cigarette 500 can be ensured.

[0044] In one embodiment, the heating appliance 300 includes a heating core and a power supply, one end of the heating core is located in the inner cavity 120, the other end passes through the bottom wall of the inner cavity 120 and is connected to the power supply, and the power supply is arranged at the bottom of the outer shell 400. Specifically, the bottom wall of the outer shell 400 is also provided with a receiving cavity, and the power supply is arranged in the receiving cavity.

[0045] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A general-purpose heating cigarette heating appliance, characterized by, The utility model relates to a general-purpose heating cigarette heating appliance, including: an extractor and a pressing assembly; the extractor is provided with a first opening and an equilateral polygonal inner cavity, the first opening and the inner cavity are communicated, and the inner cavity is used for inserting a cigarette into the inner cavity, and at least one side wall surface of the inner cavity is provided with a pressing assembly; when the pressing assembly is in a natural state, the diameter of the inscribed circle of the polygon formed by the pressing assembly and the remaining side wall surface of the inner cavity is less than a first set value; when the pressing assembly is in a maximum compression state, the diameter of the inscribed circle of the polygon formed by the pressing assembly and the remaining side wall surface of the inner cavity is greater than a second set value, and the first set value is less than the second set value; the pressing assembly includes an elastic member and a pressing plate, one side of the elastic member is attached to the side wall surface of the inner cavity, and the other side of the elastic member is connected with the pressing plate; a bayonet is formed on one side of the extractor close to the first opening, and one end of the pressing plate close to the first opening is clamped in the bayonet; the inner cavity is a regular quadrilateral inner cavity; the number of the pressing assemblies is four, and the four pressing assemblies are arranged on the four side wall surfaces of the inner cavity; when the pressing assemblies are in a natural state, the diameter of the inscribed circle of the regular quadrilateral formed by the four pressing assemblies is less than the first set value; when the pressing assemblies are in a maximum compression state, the diameter of the inscribed circle of the regular quadrilateral formed by the four pressing assemblies is greater than the second set value; a first air hole and a second air hole are formed in the bottom wall of the inner cavity, the distance between the first air hole and the central axis of the inner cavity is less than half of the first set value, and the distance between the second air hole and the central axis of the inner cavity is greater than half of the second set value.

2. The universal heating cigarette heating appliance according to claim 1, characterized in that, one end of the pressing plate close to the bayonet is provided with a circular arc surface.

3. The universal heating cigarette heating appliance according to claim 1, wherein, the side wall of the first opening is provided with a chamfer.

4. The universal heating cigarette heating appliance according to any one of claims 1-3, wherein, the general-purpose heating cigarette heating appliance further includes a heating device, one end of the heating device is fixedly connected with the bottom wall of the inner cavity, the other end of the heating device extends into the inner cavity, and the bottom wall of the inner cavity is arranged opposite to the first opening.

5. The universal heating cigarette heating appliance according to any one of claims 1-3, wherein, the general-purpose heating cigarette heating appliance further includes a shell, the shell is provided with a mounting cavity, the extractor is located in the mounting cavity, and there is a gap between the inner wall of the mounting cavity and the outer wall of the extractor.

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