Atomization device, atomizer and airflow sensor assembly

Abstract

The utility model relates to the technical field of atomization devices, in particular to an atomization device capable of protecting an airflow sensor, an atomizer and an airflow sensor assembly. A filtering structure of the air flow sensor assembly comprises a porous liquid absorbing piece and a drying agent, the porous liquid absorbing piece and the drying agent are arranged in a support channel communicated with sensor air holes, and the porous liquid absorbing piece can absorb leaked aerosol generating liquid and liquid generated after aerosol is condensed. The drying agent can absorb liquid and gas generated by volatilization of aerosol and liquid, the aerosol or the liquid entering the airflow sensor is reduced, and the technical problem that an airflow sensor in an existing atomization device is prone to failure is solved.

Description

Technical Field

[0001] The present application relates to the technical field of atomization devices, and in particular to an atomization device, an atomizer, and an airflow sensor assembly capable of protecting an airflow sensor. Background Art

[0002] The atomizer device can heat and atomize the aerosol-generating substrate to form an aerosol for the user to inhale. When the electronic atomizer device is working, the aerosol-generating substrate is heated by the electric heating element to generate an aerosol, and the aerosol is mixed with the air entering the atomizer device and then inhaled by the user.

[0003] In order to synchronize the opening and closing of the electric heating element of the atomizer with the user's inhalation, an airflow sensor is usually set in the electronic atomizer to sense the change in air pressure. When the user takes a puff, the airflow sensor detects that the puff is taken, and the electric heating element starts heating in response to the detection result of the airflow sensor. When the user stops taking a puff, the airflow sensor detects that the puff is stopped, and the electric heating element stops heating in response to the detection result of the airflow sensor. The airflow sensor can determine whether the atomizer is being puffed by detecting the air pressure parameters.

[0004] Most of the current airflow sensors are attached to circuit boards or plugged into circuit boards. Aerosol-generating liquid or volatile aerosol can easily enter the interior of the airflow sensor, causing the diaphragm inside the airflow sensor to deform, thereby causing the airflow sensor to fail. Utility Model Content

[0005] The purpose of the present application is to provide an airflow sensor assembly for improving the technical problem that the airflow sensor in the current atomization device is prone to failure.

[0006] In addition, the present application also aims to provide an atomization device using the above-mentioned airflow sensor assembly.

[0007] In addition, the present application also aims to provide an atomization device using the above-mentioned atomizer.

[0008] In a first aspect, an embodiment provides an airflow sensor assembly, comprising:

[0009] An airflow sensor, the airflow sensor comprising a sensor housing and a sensor module in the sensor housing, the sensor housing having a sensor air hole, the sensor air hole enabling the sensor module to sense air pressure changes outside the sensor housing;

[0010] and a filtering structure, wherein the filtering structure is arranged at the sensor pores to filter the gas entering the sensor pores, the filtering structure comprises a bracket, a porous liquid absorbent and a desiccant, the bracket has a bracket channel communicating with the sensor pores, the porous liquid absorbent and the desiccant are arranged in the bracket channel.

[0011] Furthermore, in one embodiment, the number of the porous liquid-absorbing members is at least two, and the desiccant is sandwiched between adjacent porous liquid-absorbing members.

[0012] Furthermore, in one embodiment, the desiccant is embedded in the porous liquid absorbent.

[0013] Furthermore, in one embodiment, the filter structure is covered on the airflow sensor.

[0014] Furthermore, in one embodiment, the bracket includes a mounting section and a filtering section, the mounting section is sleeved on the outer circumference of the sensor housing, and the bracket channel is located in the filtering section.

[0015] Furthermore, in one embodiment, the filter section includes a baffle having baffle holes for gas to pass through, the baffle is blocked by the porous liquid absorbent member, the filter section includes an annular flange at the end, and the porous liquid absorbent member is confined between the annular flange and the baffle.

[0016] Furthermore, in one embodiment, at least one of the sensor pores is a detection hole, and at least one of the sensor pores is a normal pressure hole, and the detection hole and the normal pressure hole are both provided with the filtering structure.

[0017] Furthermore, in one embodiment, the airflow sensor assembly includes a circuit board, the airflow sensor is fixed on the circuit board, the normal pressure hole and the detection hole are respectively located on both sides of the circuit board, and the bracket is attached to the circuit board.

[0018] In a second aspect, an embodiment provides a nebulizer, comprising an airflow sensor assembly and an electric heating element for heating an aerosol generating substrate; the airflow sensor assembly comprises:

[0019] An airflow sensor, the airflow sensor comprising a sensor housing and a sensor module in the sensor housing, the sensor housing having a sensor air hole, the sensor air hole enabling the sensor module to sense air pressure changes outside the sensor housing;

[0020] and a filtering structure, wherein the filtering structure is arranged at the sensor pores to filter the gas entering the sensor pores, the filtering structure comprises a bracket, a porous liquid absorbent and a desiccant, the bracket has a bracket channel communicating with the sensor pores, the porous liquid absorbent and the desiccant are arranged in the bracket channel.

[0021] Furthermore, in one embodiment, the number of the porous liquid-absorbing members is at least two, and the desiccant is sandwiched between adjacent porous liquid-absorbing members.

[0022] Furthermore, in one embodiment, the desiccant is embedded in the porous liquid absorbent.

[0023] Furthermore, in one embodiment, the filter structure is covered on the airflow sensor.

[0024] Furthermore, in one embodiment, the bracket includes a mounting section and a filtering section, the mounting section is sleeved on the outer periphery of the sensor housing, the bracket channel is in the filtering section, the filtering section includes a baffle, the baffle has baffle holes for gas to pass through, and the baffle is blocked by the porous liquid absorbent member.

[0025] Furthermore, in one embodiment, the filter section includes an annular flange at an end portion, and the porous liquid-absorbing member is confined between the annular flange and the baffle.

[0026] Furthermore, in one embodiment, at least one of the sensor pores is a detection hole, and at least one of the sensor pores is a normal pressure hole, and the detection hole and the normal pressure hole are both provided with the filtering structure.

[0027] Furthermore, in one embodiment, the airflow sensor assembly includes a circuit board, the airflow sensor is fixed on the circuit board, the normal pressure hole and the detection hole are respectively located on both sides of the circuit board, and the bracket is attached to the circuit board.

[0028] In a third aspect, an embodiment provides an atomization device, the atomization device comprising a power supply assembly and an atomizer, the power supply assembly supplies power to the atomizer, the atomizer comprises an airflow sensor assembly and an electric heating element for heating an aerosol generating substrate; the airflow sensor assembly comprises:

[0029] An airflow sensor, the airflow sensor comprising a sensor housing and a sensor module in the sensor housing, the sensor housing having a sensor air hole, the sensor air hole enabling the sensor module to sense air pressure changes outside the sensor housing;

[0030] and a filtering structure, wherein the filtering structure is arranged at the sensor pores to filter the gas entering the sensor pores, the filtering structure comprises a bracket, a porous liquid absorbent and a desiccant, the bracket has a bracket channel communicating with the sensor pores, the porous liquid absorbent and the desiccant are arranged in the bracket channel.

[0031] Furthermore, in one embodiment, the number of the porous liquid-absorbing members is at least two, and the desiccant is sandwiched between adjacent porous liquid-absorbing members.

[0032] Furthermore, in one embodiment, the desiccant is embedded in the porous liquid absorbent.

[0033] Furthermore, in one embodiment, the filter structure is covered on the airflow sensor.

[0034] Furthermore, in one embodiment, the bracket includes a mounting section and a filtering section, the mounting section is sleeved on the outer periphery of the sensor housing, the bracket channel is in the filtering section, the filtering section includes a baffle, the baffle has baffle holes for gas to pass through, and the baffle is blocked by the porous liquid absorbent member.

[0035] Furthermore, in one embodiment, the filter section includes an annular flange at an end portion, and the porous liquid-absorbing member is confined between the annular flange and the baffle.

[0036] Furthermore, in one embodiment, at least one of the sensor pores is a detection hole, and at least one of the sensor pores is a normal pressure hole, and the detection hole and the normal pressure hole are both provided with the filtering structure.

[0037] Furthermore, in one embodiment, the airflow sensor assembly includes a circuit board, the airflow sensor is fixed on the circuit board, the normal pressure hole and the detection hole are respectively located on both sides of the circuit board, and the bracket is attached to the circuit board.

[0038] According to the airflow sensor assembly of the above embodiment, the filtering structure of the airflow sensor assembly includes a porous liquid absorbent and a desiccant, and the porous liquid absorbent and the desiccant are arranged in a bracket channel connected to the sensor pores, wherein the porous liquid absorbent can absorb the leaked aerosol generating liquid and the liquid generated after the aerosol condenses, and the desiccant can absorb the liquid and gas generated by the volatilization of the aerosol and the liquid, thereby reducing the aerosol or liquid entering the airflow sensor, thereby improving the technical problem that the airflow sensor in the current atomization device is prone to failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of an airflow sensor assembly in an embodiment;

[0040] Figure 2is a top view of an airflow sensor assembly in one embodiment;

[0041] Figure 3 FIG. 4 is a cross-sectional view of an airflow sensor assembly in one embodiment.

[0042] List of feature names corresponding to the figure marks in the figure: 1. air flow sensor; 11. sensor housing; 111. sensor air hole; 1111. detection hole; 1112. normal pressure hole; 12. sensor module; 112. first air cavity; 113. second air cavity; 2. filtering structure; 21. bracket; 211. bracket channel; 212. mounting section; 213. filtering section; 214. baffle; 2141. baffle hole; 215. annular flange; 22. porous liquid absorbent; 23. desiccant; 3. circuit board.

[0043] Explanation on the reference numerals in brackets in the drawings: In the reference numerals in brackets in the drawings, the features referred to by the reference numerals are both the features represented by the numbers in the brackets and the features represented by the numbers outside the brackets. DETAILED DESCRIPTION

[0044] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0045] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0046] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0047] Since liquids may produce capillary phenomena, conventional sealing structures are difficult to absolutely prevent liquids from passing through. In order to address the current problem that aerosol-generating liquid or aerosols easily enter the airflow sensor and cause the airflow sensor to fail, the filtering structure of the present application includes a porous liquid absorbent and a desiccant. The porous liquid absorbent can absorb liquid condensed by aerosols and leaked aerosol-generating liquid, and the desiccant can absorb liquid and gas generated by the volatilization of aerosols and liquids, thereby reducing the aerosol and liquid entering the airflow sensor.

[0048] In one embodiment, please refer to Figures 1 to 3 The airflow sensor assembly includes an airflow sensor 1 and a filtering structure 2. The airflow sensor 1 includes a sensor housing 11 and a sensor module 12 in the sensor housing 11. The sensor housing 11 has a sensor air hole 111, and the sensor air hole 111 enables the sensor module 12 to sense the air pressure change outside the sensor housing 11. The filtering structure 2 is arranged at the sensor air hole 111 to filter the gas entering the sensor air hole 111. The filtering structure 2 includes a bracket 21, a porous liquid absorbent 22 and a desiccant 23. The bracket 21 has a bracket channel 211 communicating with the sensor air hole 111, and the porous liquid absorbent 22 and the desiccant 23 are arranged in the bracket channel 211.

[0049] Since the porous liquid absorbent 22 and the desiccant 23 are arranged in the bracket channel 211 connected to the sensor pore 111, the porous liquid absorbent 22 can absorb the leaked aerosol generating liquid and the liquid generated after the aerosol condenses, and the desiccant 23 can absorb the liquid and gas generated by the volatilization of the aerosol and the liquid, thereby reducing the aerosol or liquid entering the airflow sensor 1, thereby improving the technical problem that the airflow sensor 1 in the current atomization device is prone to failure.

[0050] It should be noted that the conduction, communication and interconnection described in the present application are not limited to empty channels through which liquid or gas can pass, but also include channels filled with porous materials through which liquid or gas can pass.

[0051] In one embodiment, please refer to Figures 1 to 3 In some other embodiments, the porous liquid absorbent member 22 may be made of any feasible material such as sponge, porous ceramics, etc. The liquid absorbent cotton can absorb not only oil but also water.

[0052] In one embodiment, please refer to Figure 3The airflow sensor assembly includes a circuit board 3, and the airflow sensor 1 is fixed on the circuit board 3. The airflow sensor 1 is electrically connected to the circuit board 3, and transmits the detected signal to the circuit board 3. The circuit board 3 controls the opening and closing of the electric heating element in the atomizer according to the signal received from the airflow sensor 1. Specifically, in one embodiment, there is a power supply circuit on the circuit board 3, and the power supply circuit controls the electric heating element in response to the detection result of the airflow sensor 1. There are multiple feasible ways for the power supply circuit to respond to the detection result of the airflow sensor 1. For example, the power supply circuit includes a controller and a circuit switch. After receiving the signal from the airflow sensor 1, the controller controls the on and off of the circuit switch to realize the on and off of the power supply circuit.

[0053] In one embodiment, please refer to Figure 3 , at least one sensor pore 111 is a detection hole 1111, and at least one sensor pore 111 is a normal pressure hole 1112. In one embodiment, both the detection hole 1111 and the normal pressure hole 1112 are provided with a filter structure 2. In some other embodiments, the filter structure 2 may also be provided only at the detection hole 1111. In one embodiment, the filter structures 2 at the detection hole 1111 and the normal pressure hole 1112 are the same.

[0054] The airflow sensor 1 may use any feasible structure in the prior art. For ease of understanding, the present application provides an embodiment for illustration. Figure 3 , the sensor module 12 includes a plate, a diaphragm and a sensor circuit board. Among them, the sensor housing 11 has a first air cavity 112 and a second air cavity 113, the first air cavity 112 and the second air cavity 113 are separated, and the sensor housing 11 also has a normal pressure hole 1112 communicating with the first air cavity 112 and a detection hole 1111 communicating with the second air cavity 113. The detection hole 1111 is communicated with the atomizing cavity in the atomizing device so that the airflow sensor 1 can detect whether the atomizing cavity is sucked, and the normal pressure hole 1112 is used to communicate with the outside atmosphere to always keep the air pressure in the first air cavity 112 at normal pressure. The diaphragm separates the first air cavity 112 and the second air cavity 113, the plate is configured in the sensor housing 11, the diaphragm and the plate are arranged at intervals and a capacitor interval is formed between the two, so that the diaphragm and the plate form a flat plate capacitor. The capacitor interval is in the second air cavity 113, and the capacitor interval is communicated with the detection hole 1111. The first air cavity 112 is connected to the outside atmosphere, and the detection hole 1111 is connected to the atomization cavity. In this way, when the air pressure in the atomization cavity drops, the pressure in the second air cavity 113 drops. Under the action of the air pressure in the first air cavity 112, the diaphragm can deform toward the electrode plate, changing the size of the capacitor interval, thereby generating a changed capacitance, and the power supply circuit is turned on in response to the changed capacitance.

[0055] In one embodiment, please refer to Figure 3, the normal pressure hole 1112 and the detection hole 1111 are respectively located on both sides of the circuit board 3, and the bracket 21 is attached to the circuit board 3. In this way, the bracket 21 has better stability. In some other embodiments, the bracket 21 may not be in contact with the circuit board 3, and the bracket 21 is directly fixed on the airflow sensor 1.

[0056] In one embodiment, please refer to Figure 3 , the number of porous liquid absorbent parts 22 is at least two, and the desiccant 23 is sandwiched between adjacent porous liquid absorbent parts 22. The desiccant 23 sandwiched between adjacent porous liquid absorbent parts 22 can prevent the desiccant 23 from leaking out, and has little impact on the airflow sensor 1. In one embodiment, the desiccant 23 is a granular agent, and the pores in the granular structure of the desiccant 23 also have little impact on the airflow sensor 1. In some other embodiments, the desiccant 23 can also be in block or powder form, in which case it is necessary to reserve a gas channel between the granules to avoid blocking the bracket channel 211.

[0057] In addition to arranging the desiccant 23 between adjacent porous absorbent members 22 , the desiccant 23 may also be embedded in the porous absorbent member 22 , for example, by making grooves in the porous absorbent member 22 and filling the porous absorbent member 22 with the desiccant 23 .

[0058] In one embodiment, the aerosol and the liquid are acidic, and the desiccant is an alkaline desiccant. In one embodiment, the aerosol and the liquid are alkaline, and the desiccant is an acidic desiccant.

[0059] Further, in one embodiment, please refer to Figure 3 , the filter structure 2 covers the airflow sensor 1. In some other embodiments, in addition to covering the airflow sensor 1, the filter structure 2 can also be fixed on the sensor housing 11, for example, the sensor housing 11 is provided with a mounting groove, the sensor air hole 111 is at the bottom of the mounting groove, and the filter structure 2 is directly installed in the mounting groove.

[0060] In one embodiment, please refer to Figure 3 The bracket 21 includes a mounting section 212 and a filtering section 213. The mounting section 212 is sleeved on the outer periphery of the sensor housing 11, and the bracket channel 211 is in the filtering section 213. By sleeved the mounting section 212 on the outer periphery of the sensor housing 11, the bracket 21 and the sensor housing 11 can be made more stable. In some other embodiments, in addition to sleeved the bracket 21 on the sensor housing 11, the bracket 21 and the sensor housing 11 can also be installed together by any feasible method such as welding, bonding, fastener connection, etc. In some other embodiments, the bracket 21 can also be directly fixed on the circuit board 3, in which case the airflow sensor 1 is directly covered without contacting the airflow sensor 1.

[0061] Further, in one embodiment, please refer to Figure 3, the filter section 213 includes a baffle 214, the support channel 211 includes a baffle hole 2141 on the baffle 214, and the baffle 214 blocks the porous liquid absorbent 22. The baffle 214 can limit the position of the porous liquid absorbent 22, and the porous liquid absorbent 22 has better stability. Further, in one embodiment, the filter section 213 includes an annular flange 215 at the end, and the porous liquid absorbent 22 is confined between the annular flange 215 and the baffle 214.

[0062] In some other embodiments, in addition to using the baffle 214 and the annular flange 215 , other methods may be used to restrict the porous absorbent member 22 , such as installing an end cap on the bracket 21 .

[0063] An embodiment of an atomizer, the atomizer includes an electric heater for heating an aerosol generating substrate and an airflow sensor assembly. The airflow sensor assembly is the airflow sensor assembly described in any one of the above embodiments. During use of the atomizer, it is necessary to control the operation of the electric heater according to the frequency of suction, that is, when the aerosol is sucked, the electric heater is required to work to atomize the aerosol generating substrate, and when the aerosol is not sucked, the electric heater is required to stop heating the aerosol generating substrate. In order to facilitate the control of the operation of the electric heater, an airflow sensor is used in the present application to detect whether the atomization chamber is sucked, and the power supply circuit of the atomization device responds to the detection result of the airflow sensor to connect or disconnect the circuit between the electric heater and the power supply.

[0064] In one embodiment, the aerosol generating substrate may be an aerosol generating liquid or an aerosol generating rod.

[0065] In one embodiment, the atomizer uses an aerosol generating liquid as a heating object. The atomizer includes an atomizing core, and the atomizing core includes an atomizing core shell. The atomizing core shell has an atomizing cavity, and the electric heating element is a part of the atomizing core. When the aerosol is sucked, the gas in the atomizing cavity is sucked and the pressure drops. At this time, the air pressure value detected by the airflow sensor 1 drops, that is, it is detected that the atomizing cavity is sucked. The power supply circuit is turned on according to the detection result of the airflow sensor 1, and the electric heating element starts to work, and the aerosol generating liquid is heated and atomized to produce an aerosol. When the aerosol is stopped, the air pressure in the atomizing cavity returns to normal, and the air pressure value detected by the airflow sensor 1 does not change, that is, it is detected that the atomizing cavity is not sucked. The power supply circuit is disconnected according to the detection result of the airflow sensor 1, and the electric heating element stops working, and stops heating and atomizing the aerosol generating liquid.

[0066] This application only briefly describes the structure of the atomizer core. The atomizer core includes a liquid guide part, which is a porous material, such as porous liquid guide cotton or porous ceramics. The atomizer has a liquid storage chamber, and there is a liquid guide channel on the atomizer core shell. The liquid guide channel supplies the aerosol generating liquid from the liquid storage chamber into the liquid guide part. After the aerosol generating liquid contacts the electric heating atomizer, it is heated and atomized to generate an aerosol. Regarding the electric heating element, the electric heating element can adopt any feasible form, such as a spiral heating wire, a conductive metal grid, etc.

[0067] In an embodiment of an atomization device, the atomization device includes a power supply assembly and an atomizer, and the power supply assembly supplies power to the atomizer. The atomizer is the atomizer described in any of the above embodiments, and will not be described in detail. The power supply assembly includes a power supply for supplying power to the atomizer, and the power supply can be integrated in the atomizer or can be independent of the atomizer. When the power supply is independent of the atomizer, it can be connected in a convenient disassembly manner such as magnetic attraction or snap-on, so that the power supply or the atomizer can be repaired and replaced separately.

[0068] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An airflow sensor assembly, characterized in that: include: An airflow sensor, the airflow sensor comprising a sensor housing and a sensor module in the sensor housing, the sensor housing having a sensor air hole, the sensor air hole enabling the sensor module to sense air pressure changes outside the sensor housing; and a filtering structure, wherein the filtering structure is arranged at the sensor pores to filter the gas entering the sensor pores, the filtering structure comprises a bracket, a porous liquid absorbent and a desiccant, the bracket has a bracket channel communicating with the sensor pores, the porous liquid absorbent and the desiccant are arranged in the bracket channel.

2. The airflow sensor assembly according to claim 1, characterized in that The number of the porous liquid-absorbing members is at least two, and the desiccant is sandwiched between adjacent porous liquid-absorbing members.

3. The airflow sensor assembly according to claim 1, characterized in that The desiccant is embedded in the porous liquid-absorbing member.

4. The airflow sensor assembly according to claim 1, 2 or 3, characterized in that: The filter structure is covered on the airflow sensor.

5. The airflow sensor assembly according to claim 4, characterized in that The bracket comprises a mounting section and a filtering section. The mounting section is sleeved on the outer periphery of the sensor housing, and the bracket channel is located in the filtering section.

6. The airflow sensor assembly according to claim 5, characterized in that The filter section comprises a baffle having baffle holes for gas to pass through, and the baffle is blocked by the porous liquid-absorbing member; the filter section comprises an annular flange at the end, and the porous liquid-absorbing member is confined between the annular flange and the baffle.

7. The airflow sensor assembly according to claim 1, 2 or 3, characterized in that: At least one of the sensor pores is a detection hole, and at least one of the sensor pores is a normal pressure hole. The detection hole and the normal pressure hole are both provided with the filtering structure.

8. The airflow sensor assembly according to claim 7, characterized in that The airflow sensor assembly comprises a circuit board, the airflow sensor is fixed on the circuit board, the normal pressure hole and the detection hole are respectively located on two sides of the circuit board, and the bracket is attached to the circuit board.

9. An atomizer, characterized in that: The invention comprises an electric heating element for heating an aerosol generating substrate and an airflow sensor assembly as claimed in any one of claims 1 to 8.

10. An atomizing device, characterized in that: It comprises a power supply component and the atomizer as claimed in claim 9, wherein the power supply component supplies power to the atomizer.

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