Aerosol-generating device

Abstract

The present application proposes an aerosol-generating device comprising a heating chamber for removably receiving an aerosol-generating article; a heater for heating the aerosol-generating article to generate an aerosol; a capacitor configured to produce different capacitance values when the aerosol-generating article is received in or removed from the heating chamber; and the shielding piece is arranged outside the capacitor, and the shielding piece is used for shielding an electrostatic signal. According to the aerosol generating device, the electrostatic signal is shielded through the shielding piece, interference of the electrostatic signal to the capacitor is avoided, heating is prevented from being started by mistake or mistaken stopping in the heating process is prevented, and the use experience of a user is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of aerosol generation technology, and in particular to an aerosol generating device. Background Art

[0002] As an example, an aerosol-generating device includes a heating element. When an aerosol-generating article, such as a cigarette, is inserted into the aerosol-generating device, the heating element heats the aerosol-generating article, causing at least a portion of the active substance in the aerosol-generating article to volatilize due to the heat, thereby generating an aerosol that can be inhaled by the user.

[0003] Aerosol-generating devices typically have a self-starting heating function. For example, two electrode plates are provided within the aerosol-generating device. When an aerosol-generating article is inserted between the two electrode plates, the capacitance between the two electrode plates changes. Therefore, by measuring the capacitance between the two electrode plates, the heating element can be controlled to initiate heating when it is determined that the aerosol-generating article has been inserted into the aerosol-generating device.

[0004] However, when measuring the capacitance between the two electrode plates, it is easily interfered by external electrostatic signals, which may cause erroneous start of heating or erroneous stop during the heating process. Utility Model Content

[0005] The present application aims to provide an aerosol generating device to avoid interference of electrostatic signals on the capacitor, prevent accidental start of heating or accidental stop during the heating process, and improve the user experience.

[0006] The present application provides an aerosol generating device, comprising:

[0007] a heating chamber for removably receiving the aerosol-generating article;

[0008] a heater for heating the aerosol-generating article to generate an aerosol;

[0009] a capacitor configured to produce different capacitance values ​​when the aerosol-generating article is received in or removed from the heating chamber;

[0010] A shielding member is arranged outside the capacitor and is used to shield electrostatic signals.

[0011] In one example, the device further includes a housing defining the shielding member, wherein the heating chamber, the heater, and the capacitor are all disposed within the housing.

[0012] In one example, the housing is made of metal.

[0013] In one example, the housing has dimensions in a width direction and a thickness direction, and the dimension in the width direction is greater than the dimension in the thickness direction;

[0014] The capacitor includes at least two electrode sheets, and the at least two electrode sheets are arranged at intervals along a width direction or a thickness direction of the housing.

[0015] In one example, a housing is further included, wherein the heating chamber, the heater, the capacitor, and the shielding member are all disposed in the housing.

[0016] In one example, the capacitor includes an electrode sheet, and the shielding member covers at least a portion of the electrode sheet.

[0017] In one example, the shielding element is connected to a power ground terminal.

[0018] In one example, the shielding component is disposed on an inner surface of the shell or the shielding component is spaced apart from the shell.

[0019] In one example, the housing has an opening in communication with the heating chamber, and at least a portion of the aerosol-generating article is removably received in the heating chamber through the opening.

[0020] In one example, a bracket is further included, which is arranged near the heating chamber, and the capacitor includes an electrode sheet arranged on the bracket.

[0021] The above-mentioned aerosol generating device shields the electrostatic signal through the shielding member, thereby avoiding interference of the electrostatic signal on the capacitor, preventing erroneous start of heating or erroneous stop during the heating process, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 Schematic diagram of an aerosol generating device provided in an embodiment of the present application;

[0024] Figure 2 is a cross-sectional schematic diagram of an aerosol generating device provided in an embodiment of the present application;

[0025] Figure 3 yes Figure 2 A partial enlarged schematic diagram;

[0026] Figure 4 is a schematic diagram of a bracket provided in an embodiment of the present application;

[0027] Figure 5 This is a schematic diagram of another perspective of the bracket provided in an embodiment of the present application;

[0028] Figure 6 Schematic diagram of the extractor provided in the embodiment of the present application;

[0029] Figure 7 This is a schematic diagram of the extractor provided by an embodiment of the present application from another perspective;

[0030] Figure 8 is a schematic diagram of an aerosol generating device provided in another embodiment of the present application;

[0031] Figure 9 is a schematic diagram of a heating assembly provided in another embodiment of the present application;

[0032] Figure 10 is a cross-sectional schematic diagram of a heating assembly provided in another embodiment of the present application;

[0033] Figure 11 This is a schematic diagram of an exploded view of a heating component provided in another embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific implementation methods.

[0035] Please refer to Figure 1-Figure 7 As shown, an aerosol generating device 100 provided in an embodiment of the present application includes:

[0036] The shell is roughly rectangular, that is, it has dimensions in length, width and thickness directions. The dimensions in length, width and thickness directions decrease successively. The dimension in length direction is much larger than the dimension in width direction, and the dimension in width direction is slightly larger than the dimension in thickness direction.

[0037] The housing can be composed of multiple parts. For example, the housing can be composed of a top cover 101, a main housing 102, and a bottom cover 103. The top cover 101 is disposed at the top or upper end of the main housing 102 and defines the top wall of the housing. The bottom cover 103 is disposed at the bottom or lower end of the main housing 102 and defines the bottom wall of the housing. The housing defines a housing space for accommodating a heater 105, a bracket 106, an extractor 107, a battery cell 108, a circuit board 109, and the like.

[0038] The top cover 101 is provided with an opening 101a communicating with the receiving space. At least a portion of the aerosol-generating article is removably inserted or received into the aerosol-generating device 100, i.e., into the housing, through the opening 101a. A cover assembly 104 is also provided on the top cover 101. The cover assembly 104 comprises a sliding cover that can slide left and right relative to the top cover 101. Movement of the sliding cover opens and closes the opening 101a.

[0039] The bottom cover 103 is provided with a through hole (not shown) communicating with the charging port, and an external charging device can be connected to or disconnected from the charging port through the through hole.

[0040] Heater 105 is used to heat the smokeable material in the aerosol-generating article to generate an inhalable aerosol. Heater 105 is configured to be inserted into the aerosol-generating article for heating, which is commonly known as central heating or internal heating. Heater 105 is configured as a pin-shaped structure or a blade-shaped structure. The heating method of heater 105 includes but is not limited to resistance heating, infrared radiation heating, electromagnetic induction heating, etc. It will be understood that in other examples, it is also feasible for heater 105 to be configured to heat around the aerosol-generating article, which is commonly known as peripheral heating or circumferential heating.

[0041] The bracket 106 includes a body 1061 and an extension arm 1062 connected to the body 1061. The body 1061 and the extension arm 1062 are fixed in the aerosol generating device 100.

[0042] The body 1061 has a barrel-shaped structure. The body 1061 has two walls (1061a and 1061b in the figure) disposed opposite each other along the thickness direction, and two walls (1061c and 1061d in the figure) disposed opposite each other along the width direction. The bottom of the body 1061 is provided with an opening, through which one end of the heater 105 can extend into the body 1061, while the other end of the heater 105 is retained in the opening at the bottom of the body 1061. In a specific embodiment, the other end of the heater 105 can be interference-fitted with the bottom of the body 1061 via a flange, thereby retaining the other end of the heater 105 in the opening at the bottom of the body 1061.

[0043] The extension arm 1062 extends from the top of the body 1061 toward the side wall of the aerosol generating device 100 .

[0044] The extractor 107 has substantially the same shape as the bracket 106 , and includes a body 1071 and an extension arm 1072 connected to the body 1071 .

[0045] The body 1071 has a barrel-shaped structure. The body 1071 has two walls (1071a and 1071b in the figure) disposed opposite each other along the thickness direction, and two walls (1071c and 1071d in the figure) disposed opposite each other along the width direction. The hollow portion within the body 1071 defines at least a portion of a heating chamber A, into which at least a portion of an aerosol-generating article is removably received through the opening 101a. When the extractor 107 is assembled to the bracket 106 or when the extractor 107 is not extracting an aerosol-generating article, a portion of the body 1071 extends into the body 1061. The bottom of the body 1071 also has an opening, through which one end of the heater 105 can extend into the body 1071 and then be inserted into the aerosol-generating article received in the heating chamber A for heating.

[0046] The extension arm 1072 extends from the top of the body 1071 toward the side wall of the aerosol generating device 100. The extension arm 1072 remains on the extension arm 1062 when the extractor 107 is assembled to the bracket 106 or when the extractor 107 is not extracting the aerosol generating product.

[0047] The battery cell 108 is disposed between the bottom of the body 1061 and the bottom end of the aerosol generating device 100. The battery cell 108 is used to provide power and is a rechargeable battery cell. It is understood that in other examples, the battery cell 108 can also be a disposable battery cell.

[0048] The circuit board 109 integrates multiple components, such as transistors and control units, to achieve overall control of the aerosol generating device 100. The circuit board 109 controls not only the operation of the battery cell 108 and the heater 105, but also the operation of other components in the aerosol generating device 100. For example, the circuit board 109 obtains temperature information from the heater 105 and, based on this temperature information, controls the power supplied to the heater 105 by the battery cell 108.

[0049] In one example, a first electrode sheet 1073a and a second electrode sheet 1073b are provided on two walls (1071a and 1071b in the figure) disposed opposite each other along the thickness direction of the body 1071. The first electrode sheet 1073a and the second electrode sheet 1073b are spaced apart. The first electrode sheet 1073a and the second electrode sheet 1073b are both electrically connected to the battery cell 108.

[0050] The first electrode sheet 1073a and the second electrode sheet 1073b form a capacitor. When the aerosol-generating article is received in or removed from the heating chamber A, the capacitor generates different capacitance values. Upon obtaining the capacitance values ​​generated by the capacitor, the control unit determines whether the aerosol-generating article is received in or removed from the heating chamber A, and thereby controls the heater 105 to start or stop heating.

[0051] It can be understood that since the two walls (1071a and 1071b in the figure) of the main body 1071 are arranged opposite to each other in the thickness direction have a larger surface area, the first electrode sheet 1073a and the second electrode sheet 1073b are arranged on the walls 1071a and 1071b, so that the area of ​​the first electrode sheet 1073a or the second electrode sheet 1073b can be made as large as possible, thereby increasing the capacitance value of the capacitor, which is beneficial to the detection and judgment of the control unit.

[0052] In this example, the housing, such as the main housing 102, is typically made of metal. The metal housing defines a shield that can shield external electrostatic signals, preventing interference with the capacitors from electrostatic signals, preventing accidental heating startup or stopping during heating, and improving the user experience.

[0053] Since the first electrode sheet 1073a and the second electrode sheet 1073b are arranged on the wall 1071a and the wall 1071b, when the user holds the shell of the aerosol generating device 100, the user usually pinches the two walls of the shell that are oppositely arranged in the thickness direction. The problem caused by this is that it is easy to reduce the distance between the two walls of the shell that are oppositely arranged in the thickness direction and the corresponding electrode sheets, and at this time the shell made of metal material will also affect the capacitance value of the capacitor, thereby causing the heating to start incorrectly or stop incorrectly during the heating process. In order to avoid this problem, in an improved example, the first electrode sheet 1073a and the second electrode sheet 1073b can be arranged on two walls (1071c and 1071d in the figure) that are oppositely arranged in the width direction of the body 1071, for example, the first electrode sheet 1073a is arranged on the wall 1071c, and the second electrode sheet 1073b is arranged on the wall 1071d. In this way, even if the user pinches the two walls of the shell that are opposite to each other in the thickness direction, it will not cause the problem of accidentally starting the heating or accidentally stopping the heating process; on the other hand, the two walls of the shell that are opposite to each other in the width direction have sufficient support and are not easy to deform, and even if they are pinched by the user, it is not easy to cause the above problems to occur.

[0054] It should be noted that, for the above example, it is also feasible to dispose the first electrode sheet 1073 a and the second electrode sheet 1073 b on the body 1061 .

[0055] It should be noted that the terms "first" and "second" are used to distinguish different objects and should not be understood as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the technical features indicated. In other words, the number of electrode pads is not limited.

[0056] Figures 8-11 It is an aerosol generating device 100 provided in another embodiment of the present application.

[0057] and Figure 1-Figure 7 The difference in the example is that Figures 8-11 In the example shown, the housing is generally cylindrical.

[0058] exist Figures 8-11 In the example, a heating component 200 is provided in the housing, and the heating component 200 includes a heating cylinder 201, a heater 202, a first electrode sheet 203, a second electrode sheet 204 and a shielding member 205.

[0059] The heating cartridge 201 has a barrel-shaped structure. Its hollow interior defines at least a portion of a heating chamber A, into which at least a portion of an aerosol-generating article is removably received through an opening in the outer shell. The bottom of the heating cartridge 201 has an opening, through which one end of the heater 202 can extend into the heating cartridge 201 and, in turn, into the aerosol-generating article received in the heating chamber A for heating.

[0060] The first electrode sheet 203 and the second electrode sheet 204 are disposed opposite each other and spaced apart on the outer wall of the heating tube 201. The first electrode sheet 203 and the second electrode sheet 204 form a capacitor, which generates different capacitance values ​​when the aerosol-generating article is received in or removed from the heating chamber A. Upon obtaining the capacitance value generated by the capacitor, the control unit in the aerosol-generating device 100 determines whether the aerosol-generating article is received in or removed from the heating chamber A, and thereby controls the heater 202 to start or stop heating.

[0061] The shielding member 205 covers at least a portion of the first electrode sheet 203 and at least a portion of the second electrode sheet 204. In a specific embodiment, the shielding member 205 has a tubular structure and is thus mounted on the first electrode sheet 203 and the second electrode sheet 204. The shielding member 205 can be made of a conductive material such as metal, carbon fiber, or silver fiber. The shielding member 205 can shield external electrostatic signals, prevent electrostatic signals from interfering with the capacitor, prevent false start of heating or false stop during the heating process, and enhance the user experience. The shielding member 205 can be connected to the ground terminal of the power supply to better shield external electrostatic signals.

[0062] In other examples, the shielding member 205 is disposed outside the capacitor and spaced apart from the housing, or the shielding member 205 is disposed on the inner surface of the housing, which is also feasible.

[0063] It should be noted that the specification and drawings of this application provide preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Furthermore, it is possible for a person skilled in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An aerosol generating device, characterized in that include: a heating chamber for removably receiving the aerosol-generating article; a heater for heating the aerosol-generating article to generate an aerosol; a capacitor configured to produce different capacitance values ​​when the aerosol-generating article is received in or removed from the heating chamber; A shielding member is arranged outside the capacitor and is used to shield electrostatic signals.

2. The aerosol generating device according to claim 1, wherein The invention also includes a shell defining the shielding member, wherein the heating chamber, the heater and the capacitor are all disposed in the shell.

3. The aerosol generating device according to claim 2, wherein: The shell is made of metal material.

4. The aerosol generating device according to claim 2, wherein: The shell has dimensions in a width direction and a thickness direction, and the dimension in the width direction is greater than the dimension in the thickness direction; The capacitor includes at least two electrode sheets, and the at least two electrode sheets are arranged at intervals along a width direction or a thickness direction of the housing.

5. The aerosol generating device according to claim 1, wherein The invention also includes a shell, wherein the heating chamber, the heater, the capacitor and the shielding member are all arranged in the shell.

6. The aerosol generating device according to claim 5, wherein The capacitor includes an electrode sheet, and the shielding member covers at least a portion of the electrode sheet.

7. The aerosol generating device according to claim 6, wherein: The shielding element is connected to the ground terminal of the power supply.

8. The aerosol generating device according to claim 5, wherein The shielding component is arranged on the inner surface of the shell or the shielding component is spaced apart from the shell.

9. The aerosol generating device according to any one of claims 2 to 8, wherein: The housing has an opening in communication with the heating chamber, and at least a portion of the aerosol-generating article is removably received in the heating chamber through the opening.

10. The aerosol generating device according to claim 1, wherein It also includes a bracket arranged close to the heating chamber, and the capacitor includes an electrode sheet arranged on the bracket.

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