Airflow sensor and atomization device
By incorporating an electrical parameter detection module within the airflow sensor, the problem of the airflow sensor's inability to detect leaks or condensation is solved, enabling accurate control of the airflow signal and stable operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HG INNOVATION LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-28
AI Technical Summary
Existing airflow sensors cannot detect leaks or condensation, leading to false triggering and malfunctions.
An electrical parameter detection module is installed inside the airflow sensor to detect the presence of leakage or condensation by detecting changes in electrical parameters on the substrate surface. Combined with the airflow detection module, accurate control of the airflow signal is achieved.
It enables real-time monitoring of the liquid inside the airflow sensor, avoiding false triggering and improving the user experience and device stability.
Smart Images
Figure CN224556861U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic atomization technology, specifically to an airflow sensor and an atomization device. Background Technology
[0002] An atomizing device is a device that atomizes liquid into an aerosol. It typically uses an airflow sensor as its air switch. The airflow sensor detects changes in airflow to control the atomizing device's on / off state. When the diaphragm of the airflow sensor deforms under the influence of airflow, it causes a change in capacitance. When this change in capacitance reaches a certain value, the airflow sensor generates a signal that activates the atomizing device. However, current airflow sensors cannot detect the presence of condensate or leaks, which can easily lead to false triggering and malfunctions. Utility Model Content
[0003] This application provides an airflow sensor and an atomizing device to solve the problem that airflow sensors in related technologies cannot detect leakage and the effects of condensate.
[0004] On one hand, embodiments of this application provide an airflow sensor, including:
[0005] The substrate has a first surface and a second surface that are opposite to each other;
[0006] The housing, together with the first surface, forms a receiving cavity;
[0007] An airflow detection module is located inside the receiving cavity and disposed on the first surface, and is used to detect changes in airflow to output an airflow detection signal;
[0008] An electrical parameter detection module is located inside the receiving cavity and disposed on the first surface, for detecting the electrical parameters of the first surface and outputting an electrical parameter detection signal.
[0009] The electrical parameters are configured to be affected by the state of the first surface.
[0010] In some embodiments, the electrical parameter detection module is a capacitance detection sensor; the electrical parameter is the capacitance value.
[0011] In some embodiments, the first surface is provided with a first pad, and the airflow detection module is electrically connected to the first pad;
[0012] The input terminal of the electrical parameter detection module is electrically connected to the first pad, and the electrical parameter detection module is used to detect the state of the first pad;
[0013] The electrical parameters are configured to be affected by the state of the first pad.
[0014] In some embodiments, the first surface is provided with a first pad and a second pad;
[0015] The first pad and the second pad are spaced apart; the airflow detection module is electrically connected to the first pad;
[0016] The input terminal of the electrical parameter detection module is electrically connected to the second pad, and the electrical parameter detection module is used to detect the state of the second pad;
[0017] The electrical parameters are configured to be affected by the state of the second pad.
[0018] In some embodiments, the number of the second pads is one or more.
[0019] In some embodiments, the airflow detection module includes:
[0020] A first processing chip is disposed on the first surface; the first processing chip is used to generate capacitance changes under the action of airflow;
[0021] A second processing chip is disposed on the first surface; the input terminal of the second processing chip is electrically connected to the first processing chip to obtain the capacitance change generated by the first processing chip and convert it into an airflow detection signal.
[0022] The output terminal of the second processing chip is connected to the first pad to output a gas flow detection signal. In some embodiments, the substrate has a first vent hole, and the housing has a second vent hole;
[0023] The first processing chip includes a diaphragm, which is disposed corresponding to the first vent hole, and the first vent hole and the second vent hole are respectively located on both sides of the diaphragm.
[0024] In some embodiments, the first surface is provided with a third pad, and the output terminal of the electrical parameter detection module is electrically connected to the third pad.
[0025] The third pad is configured to be electrically connected to an external component to output the electrical parameter detection signal.
[0026] On the other hand, embodiments of this application also provide an atomizing device, including:
[0027] Control panel;
[0028] As described above, the airflow sensor's airflow detection module and electrical parameter detection module are electrically connected to the control board.
[0029] In some embodiments, a display module is further included, which is electrically connected to the control board to display the detection signal information output by the electrical parameter detection module;
[0030] The detection signal information is configured to characterize whether liquid is present inside the airflow sensor.
[0031] According to the airflow sensor and atomizing device of the above embodiments, the electrical parameters of the first surface located in the receiving cavity can be detected by the electrical parameter detection module. These electrical parameters are affected by the state of the first surface. When an abnormality occurs on the first surface (e.g., leakage), the electrical parameter detection module will detect the change in the electrical parameters of the first surface and output the detected electrical parameter detection signal. This enables the monitoring of the airflow detection signal of the airflow sensor that is affected by liquids such as leakage or condensation, thus improving the user experience. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the structure of an airflow sensor in one embodiment;
[0033] Figure 2 for Figure 1 Schematic diagram of the structure inside the cavity;
[0034] Figure 3 This is a schematic diagram of the structure inside the housing cavity of the airflow sensor in another embodiment;
[0035] The accompanying diagrams are labeled as follows:
[0036] Airflow sensor 100,
[0037] Substrate 1, first surface 11, second surface 12, first vent 13
[0038] Housing 2, second vent 21,
[0039] Receiving cavity 3,
[0040] First pad 41, second pad 42, third pad 43
[0041] Airflow detection module 5, first processing chip 51, diaphragm 511, second processing chip 52, first connecting line 53, second connecting line 54.
[0042] Electrical parameter detection module 6, third connecting line 61, fourth connecting line 62,
[0043] Oil-proof part 7,
[0044] Control board 200. Detailed Implementation
[0045] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.
[0046] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.
[0047] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).
[0048] In this article, the upper and lower arrangement directions are consistent with the airflow direction between the downstream and upstream ends of the airflow channel; the vertical direction is the perpendicular direction parallel to the atomization channel, and the horizontal direction is the horizontal direction perpendicular to the atomization channel; these are only used to distinguish the objects described and have no order or technical meaning.
[0049] This application addresses the problem that airflow sensors in related technologies cannot detect leaks or condensation. It addresses this issue by incorporating an electrical parameter detection module within the airflow sensor to monitor the presence of liquid inside the sensor.
[0050] like Figure 1 and Figure 2As shown in the embodiment of this application, an airflow sensor 100 is provided, including a substrate 1, a housing 2, an airflow detection module 5, and an electrical parameter detection module 6. The substrate 1 has a first surface 11 and a second surface 12 that are opposite to each other. The housing 2 and the first surface 11 enclose a receiving cavity 3. The airflow detection module 5 is located in the receiving cavity 3 and disposed on the first surface 11, and is used to detect changes in airflow to output an airflow detection signal. The electrical parameter detection module 6 is located in the receiving cavity 3 and disposed on the first surface 11, and is used to detect the electrical parameters of the first surface 11 to output an electrical parameter detection signal. The electrical parameters are configured to be affected by the state of the first surface 11.
[0051] The first surface 11 of the substrate 1 is used to mount the airflow detection module 5 and the electrical parameter detection module 6. The electrical parameter detection module 6 can detect the electrical parameters of the first surface 11 located in the receiving cavity 3. These electrical parameters are affected by the state of the first surface 11. When the first surface 11 is abnormal (e.g., there is leakage), the electrical parameter detection module 6 will detect the change in the electrical parameters of the first surface 11 and output the detected electrical parameter detection signal. This realizes the monitoring of the airflow detection signal of the airflow sensor 100 affected by liquids such as leakage and condensation, thus improving the user experience.
[0052] In this embodiment, the airflow detection module 5 and the electrical parameter detection module 6 are integrated into the airflow sensor 100. This allows for airflow detection while also monitoring whether liquid inside the airflow sensor 100 affects the airflow detection signal.
[0053] refer to Figure 1 When the airflow sensor 100 is applied to the atomizing device, the airflow sensor 100 is connected to the control board 200 of the atomizing device, wherein the second surface 12 of the substrate 1 of the airflow sensor 100 is connected to the control board 200.
[0054] In some embodiments, the electrical parameter detection module 6 is a capacitance detection sensor; the electrical parameter is the capacitance value.
[0055] It is understandable that when liquid is present on the first surface 11, the input capacitance value of the capacitance detection sensor will change. After detecting the change in capacitance value, the capacitance detection sensor converts the capacitance change into an electrical signal, realizing the sound-to-electric conversion, and can output the electrical signal to monitor the changes in the electrical parameters of the first surface 11.
[0056] In one specific embodiment, the capacitance detection sensor may be a VM8601D-HA6 chip.
[0057] In some embodiments, reference Figure 2The first surface 11 is provided with a first pad 41, and the airflow detection module 5 is electrically connected to the first pad 41; the input terminal of the electrical parameter detection module 6 is electrically connected to the first pad 41, and the electrical parameter detection module 6 is used to detect the state of the first pad 41; wherein, the electrical parameter is configured to be affected by the state of the first pad 41. (Reference) Figure 1 The electrical parameter detection module 6 is electrically connected to the first pad 41 via the third connecting line 61.
[0058] It is understandable that the airflow detection module 5 needs to be connected to the substrate 1 via the first pad 41 to realize its function and signal input / output. When liquid is present in the receiving cavity 3, especially on the first pad 41, the liquid will affect the state of the first pad 41, thereby affecting the capacitance value of the first pad 41 in the circuit of the airflow detection module 5. This will cause inaccurate detection information in the airflow detection signal output by the airflow detection module 5, resulting in abnormal operation of the airflow sensor 100 and affecting the user experience. Therefore, in this embodiment, the input terminal of the electrical parameter detection module 6 is electrically connected to the first pad 41. The state of the first pad 41 can be detected by the electrical parameter detection module 6 to monitor whether the liquid affects the airflow detection signal.
[0059] Furthermore, since the airflow detection sensor itself is small in size, the electrical parameter detection module 6 can monitor the existing first pad 41, which can reduce the need to add additional pads to the surface.
[0060] In other embodiments, reference is made to... Figure 3 The first surface 11 is provided with a first pad 41 and a second pad 42; the first pad 41 and the second pad 42 are spaced apart; the airflow detection module 5 is electrically connected to the first pad 41; the input terminal of the electrical parameter detection module 6 is electrically connected to the second pad 42, and the electrical parameter detection module 6 is used to detect the state of the second pad 42; the electrical parameter is configured to be affected by the state of the second pad 42. To realize its function and signal input / output, the airflow detection module 5 needs to be connected to the substrate 1 through the first pad 41. In this embodiment, the electrical parameter detection module 6 does not directly monitor the state of the first pad 41, but instead provides a second pad 42 on the first surface 11. By detecting the state of the second pad 42, it determines whether there is liquid on the first surface 11. It is understood that this embodiment, by monitoring the state of the second pad 42 in the area outside the first pad 41, can monitor the liquid in a timely manner even if it does not cover the first pad 41.
[0061] To improve detection accuracy, in some embodiments, a plurality of second pads 42 may be provided on the first surface 11 to expand the detection range.
[0062] In some other embodiments, the input terminal of the electrical parameter detection module 6 is connected to both the second pad 42 and the first pad 41, which can realize the monitoring of whether there is liquid on the first surface 11 and the monitoring of whether the liquid affects the airflow detection signal.
[0063] In some embodiments, reference Figures 1 to 3 The airflow detection module 5 includes a first processing chip 51 and a second processing chip 52. The first processing chip 51 is disposed on the first surface 11. The first processing chip 51 is used to generate a capacitance change under the action of airflow. The second processing chip 52 is disposed on the first surface 11. The input terminal of the second processing chip 52 is electrically connected to the first processing chip 51 to obtain the capacitance change generated by the first processing chip 51 and convert it into an airflow detection signal. The output terminal of the second processing chip 52 is connected to the first pad 41 to output the airflow detection signal.
[0064] When there is a change in airflow, the first processing chip 51 generates a capacitance change, which is acquired by the second processing chip 52. The acquired capacitance change is converted into an electrical signal (airflow detection signal), and then the airflow detection signal is output to control the switching on and off of the atomizing device. The airflow sensor 100 with this airflow detection module 5 has the advantages of small size, high sensitivity, and good stability.
[0065] In one specific embodiment, the first processing chip 51 is a MEMS chip, and the second processing chip 52 is an ASIC chip.
[0066] It should be noted that the first surface 11 has multiple first pads 41, of which at least one is an output pad for outputting airflow detection signals, and the second processing chip 52 is connected to the output pad via a first connection line 53; at least one is a ground pad for grounding, and the second processing chip 52 is connected to the ground pad via the first connection line 53; at least one is a power pad for connecting the positive and negative terminals of the power supply, and the second processing chip 52 is connected to the power pad via the first connection line 53; at least one first pad 41 is an input pad, which is used to connect to the output terminal of the first processing chip 51 via a second connection line 54.
[0067] In some embodiments, reference Figure 1 The substrate 1 is provided with a first vent 13, and the housing 2 is provided with a second vent 21;
[0068] The first processing chip 51 includes a diaphragm 511, which is disposed corresponding to the first vent 13, and the first vent 13 and the second vent 21 are respectively located on both sides of the diaphragm 511.
[0069] It is understandable that when airflow acts on the diaphragm 511, it generates a certain pressure on the diaphragm 511. Under this pressure, the diaphragm 511 vibrates, thereby causing a change in capacitance. This change in capacitance can be sensed by the second processing chip 52 and converted into an electrical signal.
[0070] In some embodiments, reference Figure 1 To further prevent external liquids from entering the airflow sensor, an oil-proof component 7 is provided at the second vent 21. This oil-proof component 7 prevents liquids (especially e-liquid) from entering the receiving cavity 3 of the airflow sensor, while ensuring that gas can pass through the second vent 21. For example, the oil-proof component 7 can be made of polyethylene material, which has both oil-proof and breathable properties.
[0071] In some embodiments, the first surface 11 is provided with a third pad 43, and the output terminal of the electrical parameter detection module 6 is electrically connected to the third pad 43; the third pad 43 is configured to be electrically connected to an external component to output the electrical parameter detection signal. (Refer to...) Figure 1 The output terminal of the electrical parameter detection module 6 is electrically connected to the third pad 43 via the fourth connecting line 62.
[0072] It is understandable that by adding a third pad 43 to the first surface 11 to output the electrical parameter detection signal generated by the electrical parameter detection module 6, when the airflow sensor 100 is applied to the atomizing device, the electrical parameter detection signal can be output to the control board 200 of the atomizing device.
[0073] refer to Figure 1 This application embodiment also provides an atomizing device, including a control board and an airflow sensor 100 as described above. The atomizing device body is provided with a control board 200. The airflow sensor 100 is disposed in the atomizing device, and the airflow detection module 5 and the electrical parameter detection module 6 of the airflow sensor 100 are electrically connected to the control board 200 respectively.
[0074] In this embodiment, the atomizing device detects changes in airflow through the airflow detection module 5 of the airflow sensor 100 and outputs an airflow detection signal to the control board 200. The control board 200 controls the switching on and off of the atomizing device based on this airflow detection signal. To prevent leakage or other issues from affecting the electrical parameters of the airflow detection module 5 and causing abnormal airflow detection signals, this embodiment uses an electrical parameter detection module 6 to monitor the electrical parameters of the first surface 11 of the substrate 1 on which the airflow detection module is installed. This monitors whether liquid inside the airflow sensor 100 is affecting the airflow detection signal. The electrical parameter detection signal from the electrical parameter detection module 6 is output to the control board 200. The control board 200 can determine whether the airflow detection signal output by the airflow detection module 5 is abnormal based on the electrical parameter detection signal 6. If there is no abnormality, the control board can normally control the switching on and off of the atomizing device. If an abnormality exists, an abnormality warning can be issued, and the switching on and off of the atomizing device will not be performed to avoid accidental triggering.
[0075] In some embodiments, the electrical parameter detection module is a capacitance sensor, which detects the capacitance value. When liquid is present on the first surface 11, the input capacitance value of the capacitance sensor changes. After detecting the change in capacitance value, the capacitance sensor converts the capacitance change into an electrical signal, realizing acoustic-to-electrical conversion, and can output the electrical signal to the control board 200 to monitor the changes in the electrical parameters of the first surface 11.
[0076] For example, the capacitance detection sensor will only convert the change in capacitance value into an electrical signal output after the change in capacitance value exceeds a certain value. If the change in capacitance value is very small and will not affect the accuracy of the airflow detection signal, then no electrical parameter detection signal will be output to the control board 200.
[0077] If the control board 200 receives the airflow detection signal from the airflow detection module 5 and the electrical parameter detection signal from the electrical parameter detection module 6, it indicates that there is liquid inside the airflow sensor 100 and the airflow detection signal may be abnormal. The control board 200 will control the atomizing device not to start working, but will issue a leakage warning.
[0078] If the control board 200 receives the airflow detection signal from the airflow detection module 5 but does not receive the electrical parameter detection signal from the electrical parameter detection module 6, it means that there is no liquid inside the airflow sensor 100 or even if there is a small amount of liquid, it is not enough to affect the accuracy of the airflow detection signal. In this case, the control board can control the atomizing device to work normally.
[0079] The specific structure of the airflow sensor 100 is as described in the above embodiment. The second surface 12 is also provided with other pads to achieve conductive connection between the airflow sensor 100 and the control board 200. For example, pads corresponding to the output pads of the second processing chip 52 are provided to output the airflow detection signal to the control board 200. For example, pads corresponding to the third pad 43 of the electrical parameter detection module 6 are provided to output the electrical parameter detection signal to the control board 200.
[0080] In one specific embodiment, the atomizing device is an electronic cigarette, which can generate airflow changes through the user's inhalation action.
[0081] In some embodiments, the atomizing device further includes a display module, which is electrically connected to the control board 200 to display the detection signal information output by the electrical parameter detection module 6;
[0082] The detection signal information is configured to characterize whether liquid is present inside the airflow sensor 100.
[0083] The display module can be a screen, or it can provide voice prompts and / or indicator lights. The display module can visually represent the monitoring signal information output by the electrical parameter detection module 6, which the user can observe.
[0084] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.
Claims
1. An airflow sensor (100), characterized in that, include: The substrate (1) has a first surface (11) and a second surface (12) that are opposite to each other; The shell (2) and the first surface (11) enclose a receiving cavity (3); An airflow detection module (5) is located inside the receiving cavity (3) and disposed on the first surface (11) for detecting airflow changes and outputting an airflow detection signal; An electrical parameter detection module (6) is located inside the receiving cavity (3) and disposed on the first surface (11) for detecting the electrical parameters of the first surface (11) and outputting an electrical parameter detection signal. The electrical parameters are configured to be affected by the state of the first surface (11).
2. The airflow sensor (100) according to claim 1, characterized in that, The electrical parameter detection module (6) is a capacitance detection sensor; the electrical parameter is the capacitance value.
3. The airflow sensor (100) according to claim 1, characterized in that, The first surface (11) is provided with a first pad (41), and the airflow detection module (5) is electrically connected to the first pad (41); The input terminal of the electrical parameter detection module (6) is electrically connected to the first pad (41), and the electrical parameter detection module is used to detect the state of the first pad (41); The electrical parameters are configured to be affected by the state of the first pad (41).
4. The airflow sensor (100) according to claim 1, characterized in that, The first surface (11) is provided with a first pad (41) and a second pad (42); The first pad (41) and the second pad (42) are spaced apart; the airflow detection module (5) is electrically connected to the first pad (41); The input terminal of the electrical parameter detection module (6) is electrically connected to the second pad (42), and the electrical parameter detection module is used to detect the state of the second pad (42); The electrical parameters are configured to be affected by the state of the second pad (42).
5. The airflow sensor (100) according to claim 4, characterized in that, The number of the second pad (42) is one or more.
6. The airflow sensor (100) according to any one of claims 3 to 5, characterized in that, The airflow detection module (5) includes: A first processing chip (51) is disposed on the first surface (11); the first processing chip (51) is used to generate capacitance changes under the action of airflow; A second processing chip (52) is disposed on the first surface (11); the input terminal of the second processing chip (52) is electrically connected to the first processing chip (51) to obtain the capacitance change generated by the first processing chip (51) and convert it into an airflow detection signal; The output terminal of the second processing chip (52) is connected to the first pad to output an airflow detection signal.
7. The airflow sensor (100) according to claim 6, characterized in that, The substrate (1) is provided with a first vent (13), and the housing (2) is provided with a second vent (21); The first processing chip (51) includes a diaphragm (511), which is disposed corresponding to the first vent (13), and the first vent (13) and the second vent (21) are respectively located on both sides of the diaphragm (511).
8. The airflow sensor (100) according to claim 1, characterized in that, The first surface is provided with a third pad (43), and the output terminal of the electrical parameter detection module (6) is electrically connected to the third pad (43); The third pad (43) is configured to be electrically connected to an external component to output the electrical parameter detection signal.
9. An atomizing device, characterized in that, include: Control panel (200); The airflow sensor (100) as described in any one of claims 1 to 8, wherein the airflow detection module (5) and the electrical parameter detection module (6) of the airflow sensor (100) are electrically connected to the control board (200).
10. The atomizing device according to claim 9, characterized in that, It also includes a display module, which is electrically connected to the control board (200) to display the detection signal information output by the electrical parameter detection module (6); The detection signal information is configured to characterize whether liquid is present inside the airflow sensor (100).