Aerosol-generating device

Abstract

The utility model provides an aerosol generating device, and belongs to the technical field of aerosol generation, the aerosol generating device comprises a heating assembly, a power supply assembly and a protection switch, the heating assembly is used for heating an aerosol generating substrate to generate aerosol, the power supply assembly comprises a control circuit board and a battery unit, and the battery unit is electrically connected with the control circuit board; the protection switch is arranged on a power supply circuit between the control circuit board and the battery and has a first position and a second position, the protection switch conducts the power supply circuit between the battery unit and the control circuit board at the first position, and the protection switch conducts the power supply circuit between the battery unit and the control circuit board at the second position. The protection switch cuts off the power supply circuit between the battery unit and the control circuit board. Due to the arrangement of the protection switch, the battery unit can supply power or not supply power to the control circuit board, when the temperature rise of the generating device is out of control, the power supply circuit can be cut off in time, unsafe accidents are avoided, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerosol generating technology, and more particularly, to an aerosol generating device. BACKGROUND

[0002] An aerosol generating device (hereinafter referred to as "generating device") is a device that uses a heating method to act on an aerosol generating article, thereby generating an aerosol for a user to smoke. When the generating device is put into use, many prototypes are made to conduct working condition experiments, such as precision of experimental working temperature control, etc. However, during the experiment, the temperature may rise out of control, causing the button switch to fail, so that the work of the entire generating device cannot be turned off in time, thereby causing damage to the prototype, increasing the cost of generation, and also easily causing unsafe accidents due to the inability of the prototype to stop. CONTENT OF THE UTILITY MODEL

[0003] The present application provides an aerosol generating device that can promptly cut off the power supply, reduce the occurrence of dangerous situations, and reduce the cost of generation.

[0004] The present application provides an aerosol generating device, comprising:

[0005] a heating assembly for heating an aerosol generating substrate to generate an aerosol;

[0006] a power supply assembly comprising a control circuit board and a battery unit, the battery unit and the control circuit board being electrically connected, for providing a power supply to the control circuit board, the control circuit board and the heating assembly being electrically connected; and

[0007] a protection switch provided on a power supply circuit between the control circuit board and the battery, the protection switch having a first position and a second position, in the first position, the protection switch turns on the power supply circuit between the battery unit and the control circuit board, in the second position, the protection switch cuts off the power supply circuit between the battery unit and the control circuit board.

[0008] In some embodiments, the power supply circuit has a first contact and a second contact, the control circuit board has a first lead end and a second lead end, the first lead end is connected with the first contact, the second lead end is connected with a first pole of the battery unit, the second contact is connected with a second pole of the battery unit, in the first position, the protection switch can turn on the first contact and the second contact, in the second position, the protection switch can cut off the first contact and the second contact.

[0009] In some embodiments, the first contact and the second contact are disposed on the control circuit board; and the protection switch is disposed on the control circuit board.

[0010] In some embodiments, the protection switch comprises a toggle switch, a push button switch or a rotary switch.

[0011] In some embodiments, the protection switch comprises a toggle switch, the toggle switch comprising a fixed seat and a toggle part, the toggle part being movable or rotatable relative to the fixed seat to achieve switching between the first position and the second position.

[0012] In some embodiments, the generating device comprises a first support, the first support being provided with a mounting through hole, the fixed seat being disposed on one side of the first support, one end of the toggle part being movably connected with the fixed seat, and the other end of the toggle part being disposed on the other side of the first support through the mounting through hole, under the driving action of an external force, the toggle part being capable of linear reciprocating movement in a first direction.

[0013] In some embodiments, the first direction is parallel or perpendicular to the axial direction of the mounting through hole.

[0014] In some embodiments, the generating device further comprises a second support, the second support being disposed on one end of the first support and enclosing the first support to form a mounting cavity, the battery unit and the control circuit board being disposed in the mounting cavity, the fixed seat being disposed in the mounting cavity, one end of the driving part being disposed in the mounting cavity, the other end of the driving part extending out of the mounting cavity from the mounting through hole, and the heating assembly being disposed on the side of the second support away from the first support.

[0015] In some embodiments, the side of the first support facing the second support is provided with a first clamping structure, the control circuit board being arranged on the first clamping structure, the side of the second support away from the first support being provided with a second clamping structure, and the heating assembly being fixed to the second support through the second clamping structure.

[0016] In some embodiments, the heating assembly is provided with a positioning protrusion and a positioning ring, the positioning protrusion extending along the axial direction of the second support and being disposed on the side of the positioning ring facing the second support, the second clamping structure comprising a continuously arranged insertion part and a limiting part, the limiting part being disposed on the second support, and the cross-sectional dimension of the limiting part in the axial direction of the second support being greater than the cross-sectional dimension of the insertion part in the axial direction of the second support, the insertion part being capable of being inserted into the positioning ring, and the positioning protrusion abutting against the limiting part to fix the heating assembly.

[0017] According to the aerosol generating device in the above embodiment, the device comprises a heating assembly, a power supply assembly and a protection switch, the protection switch is arranged on the power supply circuit between the control circuit board and the battery, the protection switch has a first position and a second position, in the first position, the protection switch turns on the power supply circuit between the battery unit and the control circuit board, in the second position, the protection switch turns off the power supply circuit between the battery unit and the control circuit board. Since the protection switch is arranged on the power supply circuit between the control circuit board and the battery, the position switching of the protection switch can realize the on-off of the power supply circuit between the control circuit board and the battery, so as to realize the power supply or non-power supply for the control circuit board, realize the on-off control of the circuit in the whole generating device, when the temperature of the generating device is out of control, the power supply circuit can be turned off in time, so as to protect the safety of the generating device, avoid the occurrence of unsafe accidents and reduce the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structural schematic diagram of the aerosol generating device from one angle in an embodiment;

[0019] Figure 2 A structural sectional view of the aerosol generating device in an embodiment;

[0020] Figure 3 A circuit connection schematic diagram of the aerosol generating device in an embodiment;

[0021] Figure 4 A structural schematic diagram of the protection switch arranged on the control circuit board in an embodiment;

[0022] Figure 5 A structural schematic diagram of the aerosol generating device from another angle in an embodiment;

[0023] Figure 6 A structural schematic diagram of the first support in an embodiment;

[0024] Figure 7 A structural schematic diagram of the second support in an embodiment;

[0025] Figure 8 An appearance structural schematic diagram of the heating assembly in an embodiment.

[0026] Wherein: 1, heating assembly; 11, positioning protrusion; 12, positioning ring; 2, power supply assembly; 21, control circuit board; 211, first contact; 212, second contact; 213, first lead end; 214, second lead end; 22, battery unit; 221, first pole; 222, second pole; 3, protection switch; 31, fixed seat; 32, dial part; 4, first support; 41, mounting through hole; 42, first buckle structure; 5, second support; 51, second buckle structure; 511, insertion part; 512, limiting part; 6, mounting cavity; 7, airflow sensor; X, first direction. DETAILED DESCRIPTION

[0027] The application will be described in further detail below with reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following description, many details are described in order to provide a more thorough understanding of the application. However, it will be apparent to one skilled in the art that some features, which are not described, can be omitted, or can be substituted by other elements, materials, methods, etc. In some cases, some operations related to the application are not shown or described in the specification, in order to avoid the core of the application being overwhelmed by too much description, and it is not necessary for one skilled in the art to describe these operations in detail according to the description in the specification and general technical knowledge in the art.

[0028] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments, and the operation steps involved in each embodiment can also be sequentially adjusted or adjusted in a manner that is obvious to one skilled in the art. Therefore, the specification and drawings are only intended to clearly describe one embodiment, and do not mean that the composition and / or order is necessary.

[0029] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" in this application include direct and indirect connections (couplings) unless otherwise specified.

[0030] The application provides an aerosol generating device (hereinafter referred to as "generating device") which can be used to heat an aerosol generating substrate to generate an aerosol that can be used by a user. Of course, the generating device can also be applied to the field of atomization, aromatherapy, etc.

[0031] It is noted that the term "aerosol" as used herein refers to a dispersion of solid or liquid particles in a gas. "Aerosol" as used herein can generally be used to refer to a substance that has been vaporized, atomized, in the form of a spray or jet, or otherwise converted from a solid or liquid form to an inhalable form comprising suspended solid or liquid drug particles.

[0032] Referring to Figures 1 to 8 The generating device comprises a heating assembly 1, a power supply assembly 2 and a protection switch 3. The heating assembly 1 is used to heat an aerosol generating substrate to generate an aerosol. The power supply assembly 2 comprises a control circuit board 21 and a battery unit 22. The battery unit 22 and the control circuit board 21 are electrically connected, and the battery unit 22 is used to provide power supply for the control circuit board 21. The control circuit board 21 and the heating assembly 1 are electrically connected, and the control circuit board 21 can control the heating assembly 1 to start and stop, and can also adjust the working power of the heating assembly 1 according to the user's operation instruction to adjust the heating temperature, so as to adapt to different customer needs. The protection switch 3 is arranged on the power supply circuit between the control circuit board 21 and the battery. The protection switch 3 has a first position and a second position. In the first position, the protection switch 3 turns on the power supply circuit between the battery unit 22 and the control circuit board 21. In the second position, the protection switch 3 cuts off the power supply circuit between the battery unit 22 and the control circuit board 21.

[0033] Since the protection switch 3 is arranged on the power supply circuit between the control circuit board 21 and the battery, the position switching of the protection switch 3 can realize the on-off of the power supply circuit between the control circuit board 21 and the battery, so as to realize the power supply or non-power supply for the control circuit board 21, realize the on-off control of the circuit in the whole generating device, and when the temperature of the generating device is out of control, the power supply circuit can be cut off in time to protect the safety of the generating device, avoid the occurrence of unsafe accidents, and reduce the cost in the research and development stage of the manufacturer.

[0034] The heating assembly 1 comprises an outer tube, an inner tube and a heating element (not shown in the figure) arranged in the inner tube. The heating element is electrically connected with the control circuit board 21 through external wires, and the power supply and working control are realized through the control circuit board 21.

[0035] The heating element can be a heating net, a heating wire, a heating tube or a heating body, which is made of a metal material with electric conductivity or made of electrically conductive ceramic. The heating element is generally arranged on the inner tube. The inner tube can form a heating cavity for accommodating the aerosol generating substrate, and has excellent heat conduction performance and can be made of ceramic material. The outer tube is arranged outside the inner tube and contacts other parts. In order to improve the heat utilization rate and reduce heat loss, the outer tube should be made of a material with low thermal conductivity and should also have high temperature resistance, such as PEEK (polyether ether ketone) material.

[0036] Since the resistance of the heating element in the heating assembly 1 is generally low (less than 1Ω), the current in the circuit is relatively large, and the protection switch 3 should be selected to pass a large current (for example, 4A-10A) to ensure the safety of the entire circuit.

[0037] Please refer to Figure 3 In some specific embodiments, the power supply circuit has a first contact 211 and a second contact 212, the control circuit board 21 has a first lead end 213 and a second lead end 214, the first lead end 213 is connected with the first contact 211, the second lead end 214 is connected with the first pole 221 of the battery unit 22, and the second contact 212 is connected with the second pole 222 of the battery unit 22. In the first position, the protection switch 3 can conduct the first contact 211 and the second contact 212, and in the second position, the protection switch 3 can cut off the first contact 211 and the second contact 212. In this embodiment, since the first lead end 213 of the control circuit board 21 is connected with the first contact 211, the second lead end 214 of the control circuit board 21 is connected with the first pole 221 of the battery unit 22, and the second pole 222 of the battery unit 22 is connected with the second contact 212, when the protection switch 3 is set in the first position, the power supply circuit is conducted, and the entire generating device works normally. When the user smokes, the heating assembly 1 can be normally started to heat, and when the protection switch 3 is in the second position, the power supply circuit is cut off, and the generating device loses power and cannot work normally. The heating assembly 1 stops heating to slowly reduce the temperature of the generating device, avoiding the occurrence of damage or unsafe accidents of the generating device caused by high temperature.

[0038] In some specific embodiments, the first contact 211 and the second contact 212 are arranged on the control circuit board 21, and the first contact 211 and the second contact 212 are arranged on the control circuit board 21 by welding or printing.

[0039] In some specific embodiments, the protection switch 3 is arranged on the control circuit board 21, and the protection switch 3 is arranged on the control circuit board 21 by welding.

[0040] Of course, in other specific embodiments, in order to reduce the size of the control circuit board 21 and optimize the size design of the entire generating device, the protection switch 3 can be arranged independently of the control circuit board 21.

[0041] In some embodiments, the protection switch 3 includes a toggle switch, a key switch, or a rotary switch.

[0042] In some specific embodiments, the protection switch 3 comprises a toggle switch, which comprises a fixed seat 31 and a toggle part 32, the toggle part 32 being movable or rotatable relative to the fixed seat 31 to realize switching between the first position and the second position. In this embodiment, the fixed seat 31 can be arranged on the control circuit board 21, and the toggle part 32 is movably connected with the fixed seat 31, so that the first contact 211 and the second contact 212 are conducted or disconnected by moving or rotating the toggle part 32, to realize the conduction or disconnection of the power supply circuit.

[0043] Please refer to Figure 5 The generating device comprises a first bracket 4, the first bracket 4 is provided with a mounting through hole 41, the fixed seat 31 is arranged on one side of the first bracket 4, one end of the toggle part 32 is movably connected with the fixed seat 31, and the other end is arranged on the other side of the first bracket 4 by penetrating through the mounting through hole 41. Under the driving action of external force, the toggle part 32 can move linearly and reciprocally along the first direction X, and the first bracket 4 is used for mounting the toggle switch. In this embodiment, the size of the mounting through hole 41 is adapted to the size of the toggle part 32, so that the toggle part 32 can extend from one side of the first bracket 4 to the other side, and the movement of the toggle part 32 is not limited. Preferably, the cross-sectional diameter of the mounting through hole 41 is greater than the cross-sectional diameter of the toggle part 32. The mounting through hole 41 has a cylindrical structure or a rectangular structure, the toggle part 32 has a substantially cylindrical structure, the circumference of the toggle part 32 is smooth, the cylindrical structure is convenient for users to hold, and the user is not hurt.

[0044] In some specific embodiments, a protective sleeve made of rubber is sleeved on the toggle part 32, the protective sleeve is provided with a plurality of convex points, the friction force of the surface of the protective sleeve is increased, the user is convenient to hold firmly, the rubber has an insulation effect, and the user operating is protected.

[0045] In some specific embodiments, the first direction X is parallel or perpendicular to the axial direction of the mounting through hole 41, that is, the toggle part 32 can be moved along the direction from one side of the first bracket 4 to the other side of the first bracket 4 to realize position switching, or the toggle part 32 can be moved along the direction perpendicular to the direction from one side of the first bracket 4 to the other side of the first bracket 4 to realize position switching.

[0046] Please refer to Figure 2The generating device further comprises a second support 5 arranged at one end of the first support 4 and enclosing the first support 4 to form a mounting cavity 6, the battery unit 22 and the control circuit board 21 are arranged in the mounting cavity 6, the heating assembly 1, the battery unit 22 and the control circuit board 21 are arranged in sequence along the first direction X, the fixing seat 31 is arranged in the mounting cavity 6, one end of the driving part is arranged in the mounting cavity 6 and the other end extends out of the mounting cavity 6 through the mounting hole 41, and the heating assembly 1 is arranged on the side of the second support 5 away from the first support 4. The driving part extends out of the mounting cavity 6, that is, is arranged exposed on the first support 4, thereby providing a space operable by a user, the formation of the mounting cavity 6 facilitates the movement and carrying of the generating device, and meanwhile, the battery unit 22 and the control circuit board 21 in the generating device are protected, thereby avoiding damage to the first pole 221 and the second pole 222 of the battery unit 22, the first lead end 213 and the second lead end 214 of the control circuit board 21 and other lead wires or small components due to movement or exposed arrangement.

[0047] In some specific embodiments, the control circuit board 21 comprises a first circuit board and a second circuit board, the first circuit board is arranged on one side of the battery unit 22 along the first direction X and is arranged in reverse to the battery unit 22 along the first direction X, and the second circuit board is arranged in sequence with the battery unit 22 along the first direction X, thereby reasonably utilizing the space in the mounting cavity 6 and reducing the volume of the generating device. The control circuit board 21 is not only provided with a circuit for controlling the operation of the heating assembly 1, but also is provided with a circuit connected with a switch button (not shown in the figure), the switch button is used for controlling the start or stop of the generating device in normal operation, and the protection switch 3 is used for immediately cutting off the circuit in an emergency (such as uncontrolled temperature rise). In this embodiment, the first support 4 can be arranged in an L-shaped structure, the second circuit board is arranged on the part of the first support 4 extending along the direction perpendicular to the first direction X, and the first circuit board is arranged on the part of the first support 4 extending along the first direction X.

[0048] In some embodiments, in order to further protect the heating assembly 1, the generating device further comprises a shell (not shown in the figure), the shell is sleeved outside the first support 4 and the second support 5 and accommodates the heating assembly 1 in the interior of the shell. The first support 4 and the second support 5 can be connected in a detachable manner by plug-in connection, threaded connection or magnetic attraction connection.

[0049] In some specific embodiments, the first support 4 and the second support 5 are connected in a plug-in manner, at least part of the structure of the second support 5 is inserted into the first support 4, and the end of the second support 4 can abut against the control circuit board 21 on the first support 4, thereby achieving clamping and fixing of the control circuit board 21.

[0050] Please refer to Figure 6The first bracket 4 is provided with a first buckling structure 42 on the side facing the second bracket 5, and the control circuit board 21 is arranged on the first buckling structure 42. The first buckling structure 42 is a protruding structure arranged on the first bracket 4, which can abut against the end face of the control circuit board 21 to limit and install the control circuit board 21. At least part of the structure of the second bracket 5 is inserted into the first bracket 4, and the control circuit board 21 is clamped and fixed by the cooperation of the first bracket 4 and the second bracket 5, thereby avoiding displacement of the control circuit board 21 and damage caused by the displacement, and ensuring normal operation of the generating device.

[0051] In some specific embodiments, the protruding structure is a continuous closed loop protruding structure arranged along the circumference of the first bracket 4, which can increase the abutting area with the control circuit board 21. Of course, in other embodiments, the protruding structure can be a plurality of point protrusions or block protrusions arranged along the circumference of the first bracket 4 at intervals, which can realize the limitation of multiple points and also realize the fixation of the control circuit board 21. The cross section (cross section along the axial direction of the first bracket 4 and the second bracket 5, i.e. parallel to the first direction X) of the point protrusion or the block protrusion is rectangular, triangular or trapezoidal, etc. The number of point protrusions or block protrusions is at least two, for example, three, four, five or six, which can be arranged according to the size of the control circuit board 21, as long as it can realize the fixation of the control circuit board 21.

[0052] Please refer to Figure 7 and Figure 8The second clasp structure 51 is arranged on the side of the second support 5 away from the first support 4, and the heating assembly 1 is fixed to the second support 5 through the second clasp structure 51. The heating assembly 1 is provided with a positioning protrusion 11 and a positioning ring 12. The positioning protrusion 11 extends along the axial direction of the second support 5 (parallel to the first direction X) and is arranged on the side of the positioning ring 12 facing the second support 5. The second clasp structure 51 includes a continuous insertion portion 511 and a limiting portion 512. The limiting portion 512 is arranged on the second support 5, and the cross-sectional dimension of the limiting portion 512 in the axial direction of the second support 5 (parallel to the first direction X) is greater than the cross-sectional dimension of the insertion portion 511 in the axial direction of the second support 5 (parallel to the first direction X). The insertion portion 511 can be inserted into the positioning ring 12, and the positioning protrusion 11 abuts against the limiting portion 512 to fix the heating assembly 1. The positioning ring 12 can be a circular ring structure or a rectangular ring structure. The cavity in the positioning ring 12 provides a mounting space for the insertion portion 511. The positioning protrusion 11 and the limiting portion 512 abut against each other to fix the heating assembly 1 and also to limit the installation of the heating assembly 1. To ensure the stability of the installation of the heating assembly 1, at least two positioning rings 12 and positioning protrusions 11 are arranged correspondingly and uniformly along the circumference of the heating assembly 1. Correspondingly, at least two second clasp structures 51 are arranged correspondingly with the positioning structure composed of the positioning ring 12 and the positioning protrusion 11.

[0053] The generating device further includes an air flow sensor 7 electrically connected with the control circuit board 21. When the protection switch 3 is arranged in the first position, the power supply circuit is turned on. When a user smokes, air flow enters the generating device. The air flow sensor 7 is arranged on the airway and can sense the signal of air flow passing or the negative pressure signal generated when the air flow passes, and transmit the signal to the control circuit board 21. The control circuit board 21 controls the heating assembly 1 to normally start heating the aerosol generating substrate.

[0054] The above application uses specific examples to illustrate the present application, which is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. An aerosol-generating device, characterized by, The application relates to a heating assembly for heating an aerosol generating substrate to generate an aerosol; a power supply assembly comprising a control circuit board and a battery unit, the battery unit and the control circuit board being electrically connected, for providing power supply to the control circuit board, the control circuit board and the heating assembly being electrically connected; and a protection switch arranged on a power supply circuit between the control circuit board and the battery, the protection switch having a first position and a second position, in the first position, the protection switch turns on the power supply circuit between the battery unit and the control circuit board, in the second position, the protection switch turns off the power supply circuit between the battery unit and the control circuit board. The power supply circuit has a first contact and a second contact, the control circuit board has a first lead and a second lead, the first lead is connected with the first contact, the second lead is connected with a first pole of the battery unit, the second contact is connected with a second pole of the battery unit, in the first position, the protection switch can turn on the first contact and the second contact, in the second position, the protection switch can turn off the first contact and the second contact. The first contact and the second contact are arranged on the control circuit board; the protection switch is arranged on the control circuit board. The protection switch comprises a toggle switch, a key switch or a rotary switch. The protection switch comprises a toggle switch, the toggle switch comprises a fixed seat and a toggle part, the toggle part can move or rotate relative to the fixed seat, so as to realize switching between the first position and the second position.

2. The aerosol-generating device of claim 1, wherein, The generating device comprises a first support, the first support is provided with a mounting through hole, the fixed seat is arranged on one side of the first support, one end of the toggle part is movably connected with the fixed seat, the other end passes through the mounting through hole and is arranged on the other side of the first support, under the driving action of external force, the toggle part can move linearly in a first direction.

3. The aerosol-generating device of claim 2, wherein, The first direction is parallel or perpendicular to the axial direction of the mounting through hole.

4. The aerosol-generating device according to any one of claims 1-3, wherein, The generating device further comprises a second support, the second support is arranged at one end of the first support and forms a mounting cavity together with the first support, the battery unit and the control circuit board are arranged in the mounting cavity, the fixed seat is arranged in the mounting cavity, one end of the driving part is arranged in the mounting cavity, the other end of the driving part extends out of the mounting cavity, the heating assembly is arranged on the side of the second support away from the first support.

5. The aerosol-generating device of claim 4, wherein, The side of the first support facing the second support is provided with a first buckle structure, the control circuit board is arranged on the first buckle structure, the side of the second support away from the first support is provided with a second buckle structure, the heating assembly is fixed to the second support through the second buckle structure.

6. The aerosol-generating device of claim 5, wherein, ​ 7. The aerosol-generating device of claim 6, wherein, ​ 8.The aerosol-generating device of claim 6, wherein, ​ 9. The aerosol-generating device of claim 8, wherein, ​ 10. The aerosol-generating device of claim 9, wherein, The outer side of the heating assembly is provided with a positioning protrusion and a positioning ring, the positioning protrusion extends along the axial direction of the second support and is arranged on the side of the positioning ring facing the second support, the second buckle structure comprises a continuously arranged insertion part and a limiting part, the limiting part is arranged on the second support, and the cross-sectional dimension of the limiting part in the axial direction of the second support is greater than the cross-sectional dimension of the insertion part in the axial direction of the second support, the insertion part can be inserted into the positioning ring, and the positioning protrusion is in abutment with the limiting part, for fixing the heating assembly.

Images