Airflow sensor and electronic cigarette

Abstract

The application discloses an airflow sensor, comprising: an electrode body, a diaphragm and a fixing part; wherein a central position of the electrode body is provided with an airflow channel; the diaphragm is located in the airflow channel; the fixing part sets a fixed end of the diaphragm on the electrode body; when airflow flows through the airflow channel, the diaphragm vibrates under the action of the airflow to generate an electric signal, which is output by the electrode body as an output end of the airflow sensor. The application also discloses an electronic cigarette. The airflow sensor and the electronic cigarette provided by the application have simple structure and manufacturing process, low cost, high stability and high reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensing, in particular to an air flow sensor and an electronic cigarette. BACKGROUND

[0002] With the development of science and technology and the improvement of people's living needs, air flow sensors have been applied in many aspects of life. Through air flow sensors, the flow rate and flow velocity of air flow and other related information can be detected.

[0003] Electronic cigarettes, also known as virtual cigarettes, have similar appearance and taste to traditional cigarettes, and can also smoke like traditional cigarettes. In addition, some electronic cigarettes can also add various flavors such as peppermint according to the user's personal preferences.

[0004] With the continuous development of people's living needs, since electronic cigarettes do not contain tar, suspended particles and other harmful components in traditional cigarettes, more and more people choose to use electronic cigarettes instead of traditional cigarettes, and some people also use electronic cigarettes to quit smoking.

[0005] However, users and researchers find that the existing air flow sensors and electronic cigarettes have the problems of complex structure and manufacturing process, high cost, poor stability and reliability during use. Therefore, there is a lack of an air flow sensor and an electronic cigarette with simple structure and manufacturing process, low cost, and high stability and reliability in the prior art. SUMMARY

[0006] The present application provides an air flow sensor and an electronic cigarette, which solves the problems of complex structure and manufacturing process, high cost, poor stability and reliability of the air flow sensor and the electronic cigarette in the prior art.

[0007] According to one aspect of the present application, an air flow sensor is provided, comprising: an electrode body, a diaphragm and a fixing member; wherein,

[0008] The electrode body is provided with an air flow passage at the center position thereof;

[0009] The diaphragm is located in the air flow passage, the laying direction of the diaphragm is the same as the gas flow direction of the air flow passage, the fixed end of the diaphragm is close to the air flow inlet end of the air flow passage, the free end of the diaphragm is away from the air flow inlet end of the air flow passage, and the diaphragm and the inner surface of the electrode body form a vibration gap therebetween;

[0010] The fixing member is used to set the fixed end of the diaphragm on the electrode body;

[0011] When the air flow flows through the air flow passage, the diaphragm vibrates under the action of the air flow to generate an electric signal, and the electric signal is output by the electrode body as the output end of the air flow sensor.

[0012] Optionally, the thickness of the diaphragm is 0.005mm-0.15mm; preferably, the thickness of the diaphragm is 0.01mm.

[0013] Optionally, the diaphragm is a T-shaped diaphragm; wherein the upper end of the T-shaped diaphragm is the fixed end of the diaphragm, and the lower end is the free end of the diaphragm.

[0014] Optionally, the electrode body is further provided with a positioning groove;

[0015] The positioning groove is provided with a fixing member; the distance between the positioning groove and the airflow inlet end of the airflow channel is greater than or equal to 1 / 3 of the length of the electrode body.

[0016] Optionally, the fixing member has the same thickness as the positioning groove, so that the diaphragm is located on the horizontal center axis of the airflow channel.

[0017] Optionally, the electrode body further comprises: a first electrode body and a second electrode body;

[0018] A first strip-shaped groove is formed at the center position of the first electrode body, and a second strip-shaped groove is formed at the center position of the second electrode body; after the first electrode body and the second electrode body are combined, the first strip-shaped groove and the second strip-shaped groove are oppositely arranged to form an airflow channel;

[0019] The diaphragm forms a vibration gap with the inner side surface of the first electrode body and the inner side surface of the second electrode body, respectively;

[0020] The fixing member is used to set one end of the diaphragm on the first electrode body or the second electrode body;

[0021] When the airflow flows through the airflow channel, the diaphragm vibrates under the action of the airflow to generate an electrical signal, and the electrical signal is output by the first electrode body and / or the second electrode body as the output end of the airflow sensor.

[0022] Optionally, the airflow sensor further comprises: an insulating sealing strip; wherein the insulating sealing strip further comprises: a first insulating sealing strip and a second insulating sealing strip;

[0023] The first insulating sealing strip is arranged between the first contact surface of the first electrode body and the second electrode body after they are combined, and the second insulating sealing strip is arranged between the second contact surface of the first electrode body and the second electrode body after they are combined.

[0024] Optionally, the airflow sensor further comprises: a wire; wherein the wire further comprises: a first wire and a second wire;

[0025] The first wire is arranged on the first electrode body and is used to output the electrical signal on the first electrode body; the second wire is arranged on the second electrode body and is used to output the electrical signal on the second electrode body.

[0026] Optionally, the airflow sensor further comprises: an insulating sleeve and an insulating sheet;

[0027] The insulating sleeve is sleeved on the electrode body and is a cylindrical structure with a top wall at the top, an opening at the bottom, and a cavity inside; the first airflow hole is arranged on the top wall of the insulating sleeve;

[0028] The insulating sheet is arranged at the bottom of the insulating sleeve and is provided with the first wire hole, the second wire hole, and the second airflow hole;

[0029] The electrode body is wrapped inside the insulating sleeve and the insulating sheet; the first wire is led out through the opening at the bottom of the insulating sleeve and the first wire hole in sequence, and the second wire is led out through the opening at the bottom of the insulating sleeve and the second wire hole in sequence; the first airflow hole, the second airflow hole, and the airflow passage are mutually penetrable.

[0030] Optionally, the cavity formed by the insulating sleeve and the insulating sheet matches the shape and size of the electrode body; and / or,

[0031] The insulating sheet and the bottom of the insulating sleeve are of the same shape and size in cross section; and / or,

[0032] The first airflow hole and / or the second airflow hole are of the same shape and size as the longitudinal cross section of the airflow passage, respectively.

[0033] Optionally, the airflow sensor further comprises: a shielding shell and a sealing cover plate;

[0034] The shielding shell is sleeved on the insulating sleeve and the insulating sheet and is a cylindrical structure with an opening at the top, a bottom wall at the bottom, and a cavity inside; the third wire hole, the fourth wire hole, and the third airflow hole are arranged on the bottom wall of the shielding shell;

[0035] The sealing cover plate is arranged at the top of the shielding shell and is provided with the fourth airflow hole;

[0036] The insulating sleeve and the insulating sheet are wrapped inside the shielding shell and the sealing cover plate; the first wire is led out through the opening at the bottom of the insulating sleeve, the first wire hole, and the third wire hole in sequence, and the second wire is led out through the opening at the bottom of the insulating sleeve, the second wire hole, and the fourth wire hole in sequence; the first airflow hole, the second airflow hole, the third airflow hole, the fourth airflow hole, and the airflow passage are mutually penetrable.

[0037] Optionally, the cavity formed by the shielding shell and the sealing cover plate matches the shape and size of the cladding formed by the insulating sleeve and the insulating sheet; and / or,

[0038] The sealing cover plate and the top of the shielding shell are of the same shape and size in cross section; and / or,

[0039] The first airflow hole, the second airflow hole, the third airflow hole, and / or the fourth airflow hole have the same shape and size as the longitudinal section of the airflow channel.

[0040] According to another aspect of the present invention, an electronic cigarette is provided, which includes the airflow sensor described above.

[0041] The airflow sensor and electronic cigarette provided by this invention have the following beneficial effects:

[0042] (1) The airflow sensor and the airflow sensor in the electronic cigarette provided by the present invention directly set the airflow channel on the electrode body. The electrode body and the airflow channel are integrated into a single structure by means of casting or splicing. This not only makes the airflow channel easier to process and manufacture, but also improves the accuracy of the processing dimensions of the airflow channel. At the same time, the stability and reliability of the airflow sensor and the electronic cigarette provided by the present invention are improved because the electrode body and the airflow channel are integrated into a single structure and the processing dimensions of the airflow channel are highly accurate.

[0043] (2) The airflow sensor and electronic cigarette provided by the present invention eliminate the process steps of separately manufacturing electrodes, separately manufacturing a housing with an airflow channel, and setting electrodes on the housing with an airflow channel. Therefore, the structure and manufacturing process of the airflow sensor are simplified, materials are saved, and costs are reduced.

[0044] (3) The airflow sensor and electronic cigarette provided by the present invention are lightweight, easy to carry and use, and their size and / or shape can be flexibly changed according to actual needs. Attached Figure Description

[0045] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the airflow sensor provided by the present invention;

[0046] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the airflow sensor in the image;

[0047] Figure 3 for Figure 1 A schematic diagram showing the positional relationship between the diaphragm and the fixture of the airflow sensor in the diagram.

[0048] Figure 4 An exploded perspective view of a second embodiment of the airflow sensor provided by the present invention;

[0049] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the airflow sensor in the image;

[0050] Figure 6 for Figure 4 A schematic diagram showing the positional relationship between the electrodes, diaphragm, and insulating sealing strip of the airflow sensor in the diagram;

[0051] Figure 7 for Figure 4 the diaphragm and the fixing member of the airflow sensor in

[0052] Figure 8 for Figure 4 the cross-sectional structure of the insulating sleeve of the airflow sensor in

[0053] Figure 9 for Figure 4 the three-dimensional structure of the insulating sheet of the airflow sensor in

[0054] Figure 10 for Figure 4 the three-dimensional structure of the shielding shell of the airflow sensor in

[0055] Figure 11 for Figure 4 the three-dimensional structure of the sealing cover plate of the airflow sensor in

[0056] Figure 12 for the fitting straight line graph of the vibration frequency and the airflow flow rate obtained by using the linear fitting method of the first function according to the test data in Table 1. DETAILED DESCRIPTION

[0057] In order to fully understand the purpose, features and effects of the present application, the following specific embodiments are described in detail, but the present application is not limited to this.

[0058] Example One

[0059] Figure 1 for the three-dimensional structure of the airflow sensor of the present application according to Example One; Figure 2 for Figure 1 the cross-sectional structure of the airflow sensor in Figure 3 for Figure 1 the position relationship structure of the diaphragm and the fixing member of the airflow sensor in Figures 1 to 3As shown, the airflow sensor of the first embodiment comprises: an electrode body 110, a diaphragm 120, and a fixing member 130; wherein the electrode body 110 is provided with an airflow channel 112 at a central position thereof; the diaphragm 120 is located in the airflow channel 112, the laying direction of the diaphragm 120 is the same as the gas flow direction of the airflow channel 112, the fixed end 121 of the diaphragm 120 is close to the airflow inlet end of the airflow channel 112, the free end 122 of the diaphragm 120 is away from the airflow inlet end of the airflow channel 112, and a vibration gap is formed between the diaphragm 120 and the inner surface of the electrode body 110; the fixing member 130 is used to set the fixed end 121 of the diaphragm 120 on the electrode body 110; when the airflow flows through the airflow channel 112, the diaphragm 120 vibrates under the action of the airflow to generate an electric signal, and the electric signal is output by the electrode body 110 as the output end of the airflow sensor.

[0060] Preferably, the electrode body 110 is an integrally formed electrode body, that is, the electrode body 110 in the embodiment is formed by directly using a method such as casting molding to form the electrode body 110 provided with the airflow channel 112, and of course, the person skilled in the art can also use other methods to manufacture the integrally formed electrode body 110, which is not limited here.

[0061] Optionally, the shape of the electrode body 110 is any one of a cuboid shape, a cylindrical shape, and a square shape; the shape of the airflow channel 112 is any one of a cuboid shape, a cylindrical shape, and a square shape. Of course, the person skilled in the art can also select other shapes of the electrode body 110 and the airflow channel 112 according to actual needs, which is not limited here. Preferably, as shown in Figure 1 and Figure 2 Preferably, as shown in the first embodiment, the shapes of the electrode body 110 and the airflow channel 112 are both cuboid shapes.

[0062] In addition, the shape of the electrode body 110 and the shape of the airflow channel 112 can be used in any combination. For example, if the shape of the electrode body 110 is a cuboid shape, the shape of the airflow channel 112 provided at the central position of the electrode body 110 can be any one of a cuboid shape, a cylindrical shape, and a square shape; if the shape of the electrode body 110 is a cylindrical shape, the shape of the airflow channel 112 provided at the central position of the electrode body 110 can be any one of a cuboid shape, a cylindrical shape, and a square shape; and so on, which is not described here again.

[0063] In the embodiment, the material of the electrode body 110 can be metal or alloy; wherein the metal can be gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten or vanadium; and the alloy can be aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.

[0064] In the embodiment, when the thickness of the diaphragm 120 is less than 0.005 mm, the diaphragm 120 is prone to breakage when vibrating under the action of the airflow; and when the thickness of the diaphragm 120 is greater than 0.15 mm, the diaphragm 120 is not prone to vibration under the action of the airflow. Therefore, in order to avoid the above problems, the diaphragm 120 in the embodiment is selected to be a flexible film with a thickness of 0.005 mm to 0.15 mm. Preferably, the diaphragm 120 is selected to be a flexible film with a thickness of 0.01 mm.

[0065] In order to facilitate the arrangement of the diaphragm 120 on the electrode body 110, the shape of the diaphragm 120 is preferably a T-shaped diaphragm 120, the upper end of which is a fixed end 121 of the diaphragm 120, and the lower end of which is a free end 122 of the diaphragm 120, as shown in Figure 2 and Figure 3 When the T-shaped diaphragm 120 is arranged in the airflow passage 112, the laying direction of the T-shaped diaphragm 120 is made the same as the gas flow direction of the airflow passage 112, the upper end (i.e. the fixed end 121) of the T-shaped diaphragm 120 is made close to the airflow inlet end of the airflow passage 112, the lower end (i.e. the free end 122) of the T-shaped diaphragm 120 is made away from the airflow inlet end of the airflow passage 112 (i.e. the free end 122 of the T-shaped diaphragm 120 is made close to the airflow outlet end of the airflow passage 112), and a vibration gap is formed between the T-shaped diaphragm 120 and the inner side surface of the electrode body 110.

[0066] It should be understood that the laying direction of the diaphragm 120 is made the same as the gas flow direction of the airflow passage 112, and the fixed end 121 of the diaphragm 120 is made close to the airflow inlet end of the airflow passage 112, and the free end 122 of the diaphragm 120 is made away from the airflow inlet end of the airflow passage 112, in order to make the diaphragm 120 maintain a good flat or curved state when vibrating under the action of the airflow, so that it can better vibrate to generate an electric signal, and avoid curling and / or breakage of the diaphragm 120 when vibrating under the action of the airflow. The vibration gap formed between the diaphragm 120 and the inner side surface of the electrode body 110 is to provide sufficient vibration space for the diaphragm 120 when vibrating under the action of the airflow, so as to ensure that the diaphragm 120 vibrates to generate an electric signal.

[0067] Since the different substances require different work function to make the electron separate from the original surface of the object, when two substances with different electrostatic sequence contact or separate, the surface of the substance with small work function loses electron and becomes positive. Since the electrode body 110 in the embodiment is made of metal or alloy which is easy to lose electron, the material of the diaphragm 120 should be selected from the material which is easy to get electron, which can be selected from the following materials: polydimethylsiloxane, polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene-propylene, chlorosulfonated polyethylene, tetrafluoroethylene-ethylene copolymer, polytrifluorochloroethylene, polytetrafluoroethylene, polystyrene, chlorinated polyether, polyphenylene sulfide, ethylene-vinyl acetate copolymer, polyimide, aniline formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, melamine formaldehyde, polyethylene glycol succinate, cellulose, cellulose acetate, polyethylene adipate, polydiallyl phthalate, fiber (regenerated) sponge, polyurethane elastomer, styrene-propylene copolymer, styrene-butadiene copolymer, artificial fiber, polymethyl methacrylate, polyvinyl alcohol, polyisobutylene, polyethylene terephthalate, polyvinyl butyral, formaldehyde phenol polycondensate, chlorobutyl rubber, butadiene-propylene copolymer, natural rubber, butyl rubber, nitrile rubber, hydrogenated nitrile, polyacrylonitrile, acrylonitrile-vinyl chloride copolymer, silicone rubber, ethylene-propylene-diene rubber, styrene-butadiene rubber, isoprene rubber, cis-butadiene rubber or fluororubber.

[0068] The fixing member 130 can be a metal sheet with adhesive, such as a copper sheet with double-sided adhesive tape. The skilled in the art can select according to actual needs, which is not limited here.

[0069] In an alternative embodiment, the electrode body 110 is further provided with a positioning groove 140. The fixing member 130 is arranged in the positioning groove 140. The fixed end 121 of the diaphragm 120 is arranged on the electrode body 110, i.e. in the airflow channel 112, by the fixing member 130 arranged in the positioning groove 140. Preferably, the distance between the positioning groove 140 and the airflow inlet of the airflow channel 112 is greater than or equal to 1 / 3 of the length of the electrode body 110, that is, the distance between the fixed end 121 of the diaphragm 120 and the airflow inlet of the airflow channel 112 is greater than or equal to 1 / 3 of the length of the electrode body 110. This can ensure that the diaphragm 120 can vibrate under the action of stable airflow after the diaphragm 120 is arranged on the electrode body 110 by the fixing member 130 arranged in the positioning groove 140, thereby ensuring the stability and reliability of the electric signal generated by the vibration of the diaphragm 120. More preferably, the distance between the positioning groove 140 and the airflow inlet of the airflow channel 112 is equal to 1 / 3 of the length of the electrode body 110.

[0070] The number of positioning grooves 140 can be one or more, which can be selected by the skilled in the art according to actual needs, which is not limited here. In the embodiment, as shown inFigure 2 As shown, in order to more firmly set the fixed end 121 of the diaphragm 120 in the positioning groove 140 through the fixing member 130, it is preferred that two positioning grooves 140 are arranged on the electrode body 110, and the two positioning grooves 140 are respectively arranged on the electrode body 110 on both sides of the airflow channel 112, and the positions of the two positioning grooves 140 are symmetrical relative to the central axis of the airflow channel 112.

[0071] Since the fixing member 130 is located between the positioning groove 140 and the diaphragm 120, in order to make the fixed end 121 of the diaphragm 120 located on the central axis of the electrode body 110 in the horizontal direction of the airflow channel 112, it is preferred that the thickness of the fixing member 130 is the same as that of the positioning groove 140, and this arrangement can ensure that the vibration gaps formed between the diaphragm 120 and the inner side surfaces of the electrode body 110 at the top end and the bottom end of the airflow channel 112 are the same, thereby ensuring the stability and reliability of the electrical signal generated by the vibration of the diaphragm 120.

[0072] Among them, the shape and size of the fixing member 130 can be the same as the shape and size of the fixed end 121 of the diaphragm 120, or the same as the shape and size of a single positioning groove 140, which is not limited here.

[0073] Taking the case of arranging two positioning grooves 140 on the electrode body 110, and the two positioning grooves 140 are respectively arranged on the electrode body 110 on both sides of the airflow channel 112, and the positions of the two positioning grooves 140 are symmetrical relative to the central axis of the airflow channel 112. When the shape and size of the fixing member 130 are the same as the shape and size of the fixed end 121 of the diaphragm 120, at this time, only one fixing member 130 can be used, and the fixing member 130 spans the airflow channel 112, and its two ends are arranged in the two positioning grooves 140. This fixing member 130 can firmly fix the fixed end 121 of the diaphragm 120, and avoid loosening and / or falling off of the diaphragm 120 during vibration, as shown in Figure 2 and Figure 3 When the shape and size of the fixing member 130 are the same as the shape and size of the two positioning grooves 140, at this time, two fixing members 130 are needed, and the two fixing members 130 respectively fix the two ends of the fixed end 121 of the diaphragm 120 in the positioning groove 140. Since this fixing member 130 does not span the airflow channel 112, it can reduce the obstruction to the airflow channel 112, so that the airflow in the airflow channel 112 flows more smoothly, thereby ensuring the generation of the electrical signal by the vibration of the diaphragm 120.

[0074] In addition, in order to facilitate the output of the electrical signal on the electrode body 110, and make it easier to connect with the external circuit, a wire 111 can be further arranged on the electrode body 110, which can be selected by those skilled in the art according to actual needs, and is not limited here. Since the electrode body 110 in the first embodiment is an electrode body 110 of an integral structure, the electrode body 110 or the electrode body 110 provided with the wire 111 can be used as a single electrode, and the method of using the single electrode is the same as that in the prior art, which will not be repeated here.

[0075] The principle of the airflow sensor of the first embodiment is that the airflow enters the airflow channel 112 from the airflow inlet end and flows out of the airflow channel 112 from the airflow outlet end; when the airflow flow rate reaches a stable value, the vortex acting on the free end of the diaphragm 120 will be shed, and the shed vortex will make the diaphragm 120 unstable and vibrate, thereby changing the relative position of the diaphragm 120 and the electrode body 110 to generate an electrical signal; the electrical signal is output to the external circuit by the electrode body 110 or the electrode body 110 provided with the wire 111 as the output end of the airflow sensor.

[0076] The airflow sensor provided by the first embodiment of the present application directly arranges the airflow channel on the electrode body, and makes the electrode body and the airflow channel into an integral structure by casting or other methods, i.e. an electrode body of an integral structure provided with an airflow channel, which not only makes the airflow channel easier to process and manufacture, but also improves the accuracy of the processing size of the airflow channel, and at the same time, due to the integral structure of the electrode body and the airflow channel and the high accuracy of the processing size of the airflow channel, the stability and reliability of the airflow sensor are improved; in addition, the airflow sensor provided by the first embodiment of the present application eliminates the process steps of separately manufacturing the electrode, separately manufacturing the shell provided with the airflow channel, and arranging the electrode on the shell provided with the airflow channel, thus simplifying the structure and manufacturing process of the airflow sensor, saving materials, and reducing costs; in addition, the airflow sensor provided by the first embodiment of the present application is light in quality, easy to carry and use, and its volume and / or shape can be flexibly changed according to actual needs.

[0077] Embodiment Two

[0078] As Figures 4 to 11As shown, the airflow sensor of the second embodiment comprises: an electrode body 210, a diaphragm 220 and a fixing member 230; wherein the electrode body 210 further comprises a first electrode body 211 and a second electrode body 212; a first strip-shaped recess 2112 is formed at a center position of the first electrode body 211, a second strip-shaped recess 2122 is formed at a center position of the second electrode body 212, and after the side surface of the first electrode body 211 where the first strip-shaped recess 2112 is formed and the side surface of the second electrode body 212 where the second strip-shaped recess 2122 is formed are combined, the first strip-shaped recess 2112 and the second strip-shaped recess 2122 are oppositely arranged to form an airflow channel 240 at the center position of the electrode body 210; the diaphragm 220 is located in the airflow channel 240, the laying direction of the diaphragm 220 is the same as the gas flow direction of the airflow channel 240, the fixed end 221 of the diaphragm 220 is close to the airflow inlet end of the airflow channel 240, the free end 222 of the diaphragm 220 is away from the airflow inlet end of the airflow channel 240, and the fixed end 221 and the free end 222 respectively form vibration gaps with the inner side surface of the first electrode body 211 at the top end of the airflow channel 240 and the inner side surface of the second electrode body 212 at the bottom end of the airflow channel 240; the fixing member 230 is used to arrange the fixed end 221 of the diaphragm 220 on the first electrode body 211 or the second electrode body 212; when the airflow flows through the airflow channel 240, the diaphragm 220 vibrates under the action of the airflow to generate an electric signal, and the electric signal is output by the first electrode body 211 and / or the second electrode body 212 as the output end of the airflow sensor.

[0079] Preferably, the shape and size of the first electrode body 211 and the second electrode body 212 are the same, the shape and size of the first strip-shaped recess 2112 and the second strip-shaped recess 2122 are the same, and the positions of the first strip-shaped recess 2112 on the first electrode body 211 and the second strip-shaped recess 2122 on the second electrode body 212 are opposite.

[0080] It should be noted that the airflow sensor of the second embodiment is different from the airflow sensor of the first embodiment, the electrode body 210 in the airflow sensor of the second embodiment is a plurality of electrode bodies in a split structure, i.e., the first electrode body 211 and the second electrode body 212, and the electrode body 210 provided with the airflow channel 240 is formed by combining the plurality of electrode bodies in a split structure; while the electrode body 110 in the airflow sensor of the first embodiment is an electrode body in an integral structure, which does not need to be combined in any way.

[0081] The shape of the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 can be any one of a cuboid shape, a cylindrical shape, or a square shape. The shape of the airflow passage 240 in the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 can be any one of a cuboid shape, a cylindrical shape, or a square shape. Of course, the electrode body 210 and the airflow passage 240 can also have other shapes according to actual needs, which are not limited here. Preferably, as shown in Figures 4 to 6 the shapes of the electrode body 210 and the airflow passage 240 are both cuboid shapes.

[0082] In addition, the shape of the electrode body 210 and the shape of the airflow passage 240 can be used in any combination, which is the same as described in Embodiment One, and will not be repeated here. Specifically, when the shapes and sizes of the first electrode body 211 and the second electrode body 212 are the same, the shapes and sizes of the first strip-shaped groove 2112 and the second strip-shaped groove 2122 are the same, and the positions of the first strip-shaped groove 2112 on the first electrode body 211 and the second strip-shaped groove 2122 on the second electrode 212 are opposite, if it is required that the shape of the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 and the shape of the airflow passage 240 in the electrode body 210 are both cuboid shapes, at this time, the shapes of the first electrode body 211, the second electrode body 212, the first strip-shaped groove 2112, and the second strip-shaped groove 2122 are all cuboid shapes, and the sizes of the first electrode body 211 and the second electrode body 212 are both 1 / 2 of the size of the electrode body 210 formed by combining, and the sizes of the first strip-shaped groove 2112 and the second strip-shaped groove 2122 are also both 1 / 2 of the size of the airflow passage 240 formed by combining; if it is required that the shape of the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 and the shape of the airflow passage 240 in the electrode body 210 are both cylindrical shapes, at this time, the shapes of the first electrode body 211, the second electrode body 212, the first strip-shaped groove 2112, and the second strip-shaped groove 2122 are all half-cylindrical shapes, and the sizes of the first electrode body 211 and the second electrode body 212 are both 1 / 2 of the size of the electrode body 210 formed by combining, and the sizes of the first strip-shaped groove 2112 and the second strip-shaped groove 2122 are also both 1 / 2 of the size of the airflow passage 240 formed by combining; the case of the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 and the airflow passage 240 in the electrode body 210 being other shapes is similar, and will not be repeated here.

[0083] In the embodiment, the material of the first electrode body 211 and the second electrode body 212 can be metal or alloy; wherein the metal can be gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten or vanadium; the alloy can be aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.

[0084] It should be noted that since the electrode body 210 in the embodiment is formed by combining the first electrode body 211 and the second electrode body 212, the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 can be an electrode body 210 including two materials, that is, the materials of the first electrode body 211 and the second electrode body 212 can be the same or different. Specifically, if the first electrode body 211 and the second electrode body 212 adopt different materials, the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 is an electrode body 210 including two materials; if the first electrode body 211 and the second electrode body 212 adopt the same material, the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212 is an electrode body 210 including one material.

[0085] In the embodiment, the first electrode body 211 and the second electrode body 212 can be used as a double electrode; or the first electrode body 211 and the second electrode body 212 can be used as a single electrode, and the method of using the first electrode body 211 and the second electrode body 212 as a double electrode and a single electrode is the same as that in the prior art, which will not be described here.

[0086] In the embodiment, when the thickness of the diaphragm 220 is less than 0.005 mm, the diaphragm 220 is prone to breakage when vibrating under the action of air flow; when the thickness of the diaphragm 220 is greater than 0.15 mm, the diaphragm 220 is not prone to vibration under the action of air flow, therefore, in order to avoid the occurrence of the above problems, the diaphragm 220 in the embodiment is selected to be a flexible film with a thickness of 0.005 mm to 0.15 mm. Preferably, the diaphragm 220 is selected to be a flexible film with a thickness of 0.01 mm.

[0087] In order to facilitate the diaphragm 220 to be arranged on the electrode body 210 formed by combining the first electrode body 211 and the second electrode body 212, the shape of the diaphragm 220 is preferably a T-shaped diaphragm 220, the upper end of the T-shaped diaphragm 220 is the fixed end 221 of the diaphragm 220, and the lower end is the free end 222 of the diaphragm 220, which is specifically shown in Figure 6 and Figure 7The T-shaped diaphragm 220 is arranged in the airflow passage 240, and the laying direction of the T-shaped diaphragm 220 is the same as the gas flow direction of the airflow passage 240. The upper end (i.e. the fixed end 221) of the T-shaped diaphragm 220 is close to the airflow inlet end of the airflow passage 240, the lower end (i.e. the free end 222) of the T-shaped diaphragm 220 is away from the airflow inlet end of the airflow passage 240 (i.e. the free end 222 of the T-shaped diaphragm 220 is close to the airflow outlet end of the airflow passage 240), and the T-shaped diaphragm 220 is arranged to form a vibration gap between the inner side surface of the first electrode body 211 at the top end of the airflow passage 240 and the inner side surface of the second electrode body 212 at the bottom end of the airflow passage 240.

[0088] It should be understood that the laying direction of the diaphragm 220 is the same as the gas flow direction of the airflow passage 240, and the fixed end 221 of the diaphragm 220 is close to the airflow inlet end of the airflow passage 240, and the free end 222 of the diaphragm 220 is away from the airflow inlet end of the airflow passage 240, so that the diaphragm 220 can maintain a good flat or curved state when vibrating under the action of the airflow, thereby better vibrating to generate an electric signal, and avoiding the diaphragm 220 from being curled and / or damaged when vibrating under the action of the airflow. The diaphragm 220 is arranged to form a vibration gap between the inner side surface of the first electrode body 211 at the top end of the airflow passage 240 and the inner side surface of the second electrode body 212 at the bottom end of the airflow passage 240, so that the diaphragm 220 has sufficient vibration space when vibrating under the action of the airflow, thereby ensuring that the diaphragm 220 vibrates to generate an electric signal.

[0089] Since the different substances require different work function to make the electron separate from the original surface of the object, when two substances with different electrostatic sequence contact or separate, the surface of the substance with small work function loses electron and becomes positive. Since the first electrode body 211 and the second electrode body 212 in the embodiment are made of metal or alloy which is easy to lose electron, the material of the diaphragm 220 should be selected from the material which is easy to gain electron, which can be selected from the following: polydimethylsiloxane, polyethylene, polypropylene, polyvinyl chloride, polyfluoroethylene propylene, chlorosulfonated polyethylene, tetrafluoroethylene-ethylene copolymer, polytrifluorochloroethylene, polytetrafluoroethylene, polystyrene, chlorinated polyether, polyphenylene sulfide, ethylene-vinyl acetate copolymer, polyimide, aniline formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, melamine formaldehyde, polyethylene glycol succinate, cellulose, cellulose acetate, polyethylene adipate, polydiallyl phthalate, fiber (regenerated) sponge, polyurethane elastomer, styrene propylene copolymer, styrene butadiene copolymer, artificial fiber, polymethyl methacrylate, polyvinyl alcohol, polyisobutylene, polyethylene terephthalate, polyvinyl butyral, formaldehyde phenol polycondensate, chlorobutyl rubber, butadiene propylene copolymer, natural rubber, butyl rubber, nitrile rubber, hydrogenated nitrile, polyacrylonitrile, acrylonitrile vinyl chloride copolymer, silicone rubber, ethylene propylene terpolymer, styrene butadiene rubber, isoprene rubber, cis-butadiene rubber or fluororubber.

[0090] The fixing member 230 can be a metal sheet with adhesive, such as a copper sheet with double-sided tape, which can be selected by those skilled in the art according to actual needs, and is not limited here.

[0091] In one optional embodiment, the electrode body 210 formed by assembling the first electrode body 211 and the second electrode body 212 is further provided with a positioning groove 2123. A fixing member 230 is provided in the positioning groove 2123. At this time, the fixing end 221 of the diaphragm 220 is set on the electrode body 210 formed by assembling the first electrode body 211 and the second electrode body 212 through the fixing member 230 provided in the positioning groove 2123. Preferably, the distance between the positioning groove 2123 and the airflow inlet end of the airflow channel 240 is greater than or equal to 1 / 3 of the length of the electrode body 210. That is, the distance between the fixed end 221 of the diaphragm 220 and the airflow inlet end of the airflow channel 240 is greater than or equal to 1 / 3 of the length of the electrode body 210 (i.e., the first electrode body 211 or the second electrode body 212). This ensures that after the diaphragm 220 is mounted on the electrode body 210 formed by the first electrode body 211 and the second electrode body 212 through the fixing member 230 within the positioning groove 2123, the diaphragm 220 can vibrate under the action of a stable airflow, thereby ensuring the stability and reliability of the electrical signal generated by the vibration of the diaphragm 220. More preferably, the distance between the positioning groove 2123 and the airflow inlet end of the airflow channel 240 is equal to 1 / 3 of the length of the electrode body 210.

[0092] The number of positioning slots 2123 can be one or more, and those skilled in the art can choose according to actual needs; no limitation is made here. In this embodiment, as... Figure 6 As shown, in order to more firmly fix the fixed end 221 of the diaphragm 220 in the positioning groove 2123 by means of the fastener 230, it is preferable to provide two positioning grooves 2123 on the electrode body 210 formed by the first electrode body 211 and the second electrode body 212 after they are assembled. The two positioning grooves 2123 are respectively located on the first electrode body 211 and / or the second electrode body 212 on both sides of the airflow channel 240, and the positions of the two positioning grooves 2123 are symmetrical with respect to the central axis of the airflow channel 240.

[0093] Specifically, when there are two positioning slots 2123, two positioning slots 2123 can be provided on the first electrode body 211, and the positions of the two positioning slots 2123 are symmetrical with respect to the central axis of the airflow channel 240; two positioning slots 2123 can also be provided on the second electrode body 212, and the positions of the two positioning slots 2123 are symmetrical with respect to the central axis of the airflow channel 240; or one positioning slot 2123 can be provided on the first electrode body 211 and the second electrode body 212 respectively, and the positions of the two positioning slots 2123 are symmetrical with respect to the central axis of the airflow channel 240; those skilled in the art can choose according to actual needs, and no limitation is made here.

[0094] Since the fixing member 230 is located between the positioning groove 2123 and the diaphragm 220, in order to make the fixed end 221 of the diaphragm 220 located on the central axis of the airflow channel 240 in the horizontal direction, it is preferred that the fixing member 230 has the same thickness as the positioning groove 2123, which can ensure that the vibration gaps formed between the diaphragm 220 and the inner side surface of the first electrode body 211 at the top end of the airflow channel 240 and the inner side surface of the second electrode body 212 at the bottom end of the airflow channel 240 are the same in size, thereby ensuring the stability and reliability of the electric signal generated by the vibration of the diaphragm 220.

[0095] In the above embodiment, the shape and size of the fixing member 230 can be the same as the shape and size of the fixed end 221 of the diaphragm 220, or the same as the shape and size of the single positioning groove 2123, which is not limited here.

[0096] For example, in the case of providing two positioning grooves 2123 on the second electrode body 212, the two positioning grooves 2123 are located on the second electrode body 212 on both sides of the airflow channel 240, and the positions of the two positioning grooves 2123 are symmetrical with respect to the central axis of the airflow channel 240. When the shape and size of the fixing member 230 are the same as the shape and size of the fixed end 221 of the diaphragm 220, at this time, only one fixing member 230 can be used, which spans the airflow channel 240, and the two ends of the fixing member 230 are arranged in the two positioning grooves 2123. This fixing member 230 can firmly fix the fixed end 221 of the diaphragm 220, and avoid loosening and / or falling off of the diaphragm 220 during vibration, as shown in FIGS. 1A and 1B. Figure 6 and Figure 7 When the shape and size of the fixing member 230 are the same as the shape and size of the two positioning grooves 2123, at this time, two fixing members 230 are needed, and the two fixing members 230 fix the two ends of the fixed end 221 of the diaphragm 220 in the positioning grooves 2123. Since this fixing member 230 does not span the airflow channel 240, it can reduce the obstruction to the airflow channel 240, making the airflow in the airflow channel 240 flow more smoothly, thereby ensuring the generation of the electric signal by the vibration of the diaphragm 220.

[0097] In order to avoid the conduction between the first electrode body 211 and the second electrode body 212, the first electrode body 211 and the second electrode body 212 are used as two electrodes, and in order to enable the first electrode body 211 and the second electrode body 212 to be sealed between the surfaces of the two bodies after being combined, the airflow sensor of the embodiment can further be provided with an insulating sealing strip between the first electrode body 211 and the second electrode body 212, wherein the insulating sealing strip comprises a first insulating sealing strip 251 and a second insulating sealing strip 252. Specifically, the first insulating sealing strip 251 is arranged between the first contact surface 2124 of the first electrode body 211 and the second electrode body 212 after being combined, and the second insulating sealing strip 252 is arranged between the second contact surface 2125 of the first electrode body 211 and the second electrode body 212 after being combined.

[0098] Preferably, the first insulating sealing strip 251 has the same shape and size as the first contact surface 2124, and the second insulating sealing strip 252 has the same shape and size as the second contact surface 2125, so as to ensure that the first electrode body 211 and the second electrode body 212 are not in contact and conduct completely and have good sealing performance.

[0099] The materials of the first insulating sealing strip 251 and the second insulating sealing strip 252 can be selected from insulating glue and the like, and of course, other materials capable of insulating, sealing and adhering the first contact surface 2124 and the second contact surface 2125 can also be selected by those skilled in the art according to actual needs, which are not limited herein.

[0100] Optionally, the airflow sensor of the embodiment further comprises a wire, wherein the wire further comprises a first wire 2111 and a second wire 2121; the first wire 2111 is arranged on the first electrode body 211 and is used for outputting the electrical signal on the first electrode body 211; and the second wire 2121 is arranged on the second electrode body 212 and is used for outputting the electrical signal on the second electrode body 212. Specifically, the first wire 2111 is arranged on the outer surface of the first electrode body 211 close to the airflow outflow end, and the second wire 2121 is arranged on the outer surface of the second electrode body 212 close to the airflow outflow end.

[0101] In the first optional embodiment, as shown in FIG. 6, the first wire 2111 and the second wire 2121 are arranged on the outer surfaces of the first electrode body 211 and the second electrode body 212 close to the airflow outflow end. Figure 8 and Figure 9As shown, the airflow sensor of the embodiment further comprises an insulating sleeve 260 and an insulating sheet 270; the insulating sleeve 260 is sleeved on the electrode body 210 formed by the combination of the first electrode body 211 and the second electrode body 212, and has a cylindrical structure with a top wall provided at a top portion 261, an opening provided at a bottom portion 262, and a cavity 263 provided inside; the insulating sleeve 260 is provided with a first airflow hole 2611 on the top wall; the insulating sheet 270 is provided with a second airflow hole 273, and is arranged on the bottom portion 262 of the insulating sleeve 260; wherein the electrode body 210 formed by the combination of the first electrode body 211 and the second electrode body 212 is wrapped inside the insulating sleeve 260 and the insulating sheet 270; the first airflow hole 2611, the second airflow hole 273, and the airflow channel 240 are mutually through.

[0102] Optionally, the cavity 263 formed by the insulating sleeve 260 and the insulating sheet 270 matches the shape and size of the electrode body 210; and / or, the insulating sheet 270 and the bottom portion 262 of the insulating sleeve 260 have the same shape and size of cross section; and / or, the first airflow hole 2611 and / or the second airflow hole 273 have the same shape and size of longitudinal cross section of the airflow channel 240.

[0103] It should be understood that, if the airflow sensor of the embodiment comprises the first lead wire 2111 and the second lead wire 2121, the insulating sheet 270 can further be provided with a first lead wire hole 271 and a second lead wire hole 272; wherein the first lead wire 2111 is led out through the opening of the bottom portion 262 of the insulating sleeve 260 and the first lead wire hole 271 in sequence, and the second lead wire 2121 is led out through the opening of the bottom portion 262 of the insulating sleeve 260 and the second lead wire hole 272 in sequence.

[0104] Wherein, the material of the insulating sleeve 260 and the insulating sheet 270 can be insulating elastic material or insulating non-elastic material, which is not limited here. Preferably, the material of the insulating sleeve 260 and the insulating sheet 270 is silicone insulating elastic material.

[0105] The second optional embodiment is based on the first optional embodiment, as shown in Figure 10 and Figure 11As shown, further comprising: a shielding shell 280 and a sealing cover plate 290; the shielding shell 280 is sleeved on the insulating sleeve 260 and the insulating sheet 270, and the shielding shell 280 is a cylindrical structure with an opening arranged at the top 282, a bottom wall arranged at the bottom 281, and a cavity 283 arranged inside; the bottom wall of the shielding shell 280 is provided with a third airflow hole 2813; the sealing cover plate 290 is provided with a fourth airflow hole 291, and the sealing cover plate 290 is arranged on the top 282 of the shielding shell 280; wherein, the insulating sleeve 260 and the insulating sheet 270 are wrapped inside the shielding shell 280 and the sealing cover plate 290; the first airflow hole 2611, the second airflow hole 273, the third airflow hole 2813, the fourth airflow hole 291 and the airflow channel 240 are mutually penetrated.

[0106] It should be understood that, if the airflow sensor of the embodiment includes the first lead wire 2111 and the second lead wire 2121, the bottom wall of the shielding shell 280 can further be provided with a third lead wire hole 2811 and a fourth lead wire hole 2812; wherein, the first lead wire 2111 is led out through the opening of the bottom 262 of the insulating sleeve 260, the first lead wire hole 271 and the third lead wire hole 2811 in sequence, and the second lead wire 2121 is led out through the opening of the bottom 262 of the insulating sleeve 260, the second lead wire hole 272 and the fourth lead wire hole 2812 in sequence.

[0107] Wherein, the shell formed by the combination of the shielding shell 280 and the sealing cover plate 290 can be a conductive shell, or a non-conductive shell with a conductive coating arranged on the outer surface, wherein the conductive coating is used to shield the interference of external interference signals, and the non-conductive shell is used as a substrate for the conductive coating. Those skilled in the art can select according to actual needs, which is not limited here.

[0108] Optionally, the cavity 283 formed by the shielding shell 280 and the sealing cover plate 290 matches the shape and size of the cladding formed by the insulating sleeve 260 and the insulating sheet 270; and / or, the sealing cover plate 290 and the top 282 of the shielding shell 280 have the same shape and size of cross section; and / or, the first airflow hole 2611, the second airflow hole 273, the third airflow hole 2813 and / or the fourth airflow hole 291 have the same shape and size of longitudinal cross section of the airflow channel 240.

[0109] The principle of the airflow sensor in Embodiment 2 is as follows: airflow enters from the airflow inlet end of the airflow channel 240 and exits from the airflow outlet end of the airflow channel 240; when the airflow velocity reaches a stable value, the eddy current acting on the free end of the diaphragm 220 will fall off, and the falling eddy current will cause the diaphragm 220 to become unstable and vibrate, causing the relative position of the diaphragm 220 with the first electrode body 211 and the second electrode body 212 to change, thereby generating an electrical signal; the electrical signal is output to the external circuit by the first electrode body 211 and / or the second electrode body 212 or the first electrode body 211 with the first wire 2111 and / or the second electrode body 212 with the second wire 2121 as the output terminal of the airflow sensor.

[0110] The airflow sensor provided in Embodiment 2 of this invention directly sets an airflow channel on the electrode body. Through splicing and combination, the electrode body and the airflow channel become an integral structure. That is, the electrode body with the airflow channel is formed by splicing and combining two separate electrode bodies, namely the first electrode body and the second electrode body. This not only makes the airflow channel easier to process and manufacture, but also improves the accuracy of the processing dimensions of the airflow channel. Furthermore, because the electrode body and the airflow channel are an integral structure and the processing dimensions of the airflow channel are highly accurate, the stability and reliability of the output electrical signal of the airflow sensor are improved. In addition, the airflow sensor provided in Embodiment 2 of this invention eliminates the process steps of separately manufacturing electrodes, separately manufacturing a housing with the airflow channel, and setting electrodes on the housing with the airflow channel. Therefore, it simplifies the structure and manufacturing process of the airflow sensor, saves materials, and reduces costs. Moreover, the airflow sensor provided in Embodiment 2 of this invention is lightweight, easy to carry and use, and its size and / or shape can be flexibly changed according to actual needs.

[0111] The following is a test and Figure 6 Taking the correspondence between the output electrical signal (i.e., vibration frequency) and airflow rate of three airflow sensors with the same structure as the airflow sensor shown, this invention fully illustrates that the airflow sensor provided by the present invention has high stability and reliability.

[0112] will with Figure 6Airflow sensors 1, 2, and 3, which have identical structures, were placed under different airflow rates as shown in Table 1. A signal acquisition system (such as a digital oscilloscope) connected to the output terminals of each sensor recorded the number of times their output electrical signals were generated per unit time under different airflow rates. The vibration frequencies of the three airflow sensors were obtained through Fourier transform. The three airflow sensors have identical structural dimensions: the electrode body's length × width × height is 30mm × 7mm × 4mm, and its material is copper; the airflow channel's length × width × height is 30mm × 4mm × 1mm, where the height of the airflow channel is the distance between its top and bottom ends; the diaphragm is an axisymmetric T-shaped diaphragm with a fixed end length × width of 1.5mm × 4mm, a free end length × width of 10.5mm × 2.5mm, and a thickness of 0.01mm, made of polyethylene terephthalate. In addition, the fixed end of the diaphragm is located at 1 / 3 of the electrode body length from the airflow inlet end of the airflow channel, that is, the distance between the fixed end of the diaphragm and the airflow inlet end of the airflow channel is 15mm.

[0113] Table 1

[0114]

[0115] Table 1 shows the... Figure 6 The table shows the vibration frequencies of airflow sensors 1, 2, and 3, which have the same structure, tested under different airflow rates. Figure 12 The linear regression line graph of vibration frequency versus airflow rate was plotted using a linear function fitting method based on the test data in Table 1. Table 1 clearly shows that different airflow rates passing through the same airflow sensor will cause the sensor to produce different vibration frequencies; that is, there is a one-to-one correspondence between different airflow rates passing through the same airflow sensor and the vibration frequency produced by the sensor. Specifically, as the airflow rate passing through the same airflow sensor increases, the vibration frequency of the airflow sensor also increases. Although Table 1 clearly shows slight differences in the test data of airflow sensors 1, 2, and 3, from... Figure 12 It can be clearly seen that the vibration frequencies of the three airflow sensors coincide with the fitted straight line of the airflow rate, exhibiting excellent consistency. Therefore, as can be seen from the above, the airflow sensor provided by this invention not only has high stability and reliability but also good consistency.

[0116] It should be noted that the airflow sensor of the present application is caused by the vibration of the diaphragm due to the diaphragm instability caused by the vortex shedding acting on the free end of the diaphragm, so that the electrical signal is generated, that is, the relative position change between the diaphragm and the electrode body generates the electrical signal.

[0117] The present application also provides an electronic cigarette comprising the airflow sensor of embodiment one or embodiment two. Wherein the description of the airflow sensor in the electronic cigarette is the same as that of the airflow sensor in embodiment one or embodiment two to which it is applied, and will not be repeated here. In addition, in addition to the airflow sensor, the other structures of the electronic cigarette can adopt the structures of the electronic cigarette in the prior art, and the person skilled in the art can select according to the actual needs, and will not be repeated here.

[0118] The airflow sensor and the airflow sensor in the electronic cigarette provided by the present application directly set the airflow channel on the electrode body, and make the electrode body and the airflow channel into an integrated structure by means of pouring forming or splicing combination, which not only makes the airflow channel easier to process and manufacture, but also improves the accuracy of the processing size of the airflow channel. At the same time, due to the integrated structure of the electrode body and the airflow channel and the high accuracy of the processing size of the airflow channel, the stability and reliability of the airflow sensor and the electronic cigarette provided by the present application are improved. In addition, the airflow sensor and the electronic cigarette provided by the present application, since the process steps of separately manufacturing the electrode, separately manufacturing the shell provided with the airflow channel, and setting the electrode on the shell provided with the airflow channel are omitted, the structure and manufacturing process of the airflow sensor are simplified, the materials are saved, and the cost is reduced. In addition, the airflow sensor and the electronic cigarette provided by the present application are light in quality, convenient to carry and use, and the volume and / or shape thereof can be flexibly changed according to actual needs.

[0119] Those skilled in the art can understand that, although the steps of the method are described in sequence in the above description for the purpose of understanding, it should be pointed out that the order of the above steps is not strictly limited.

[0120] Those skilled in the art can understand that all or part of the steps in the above embodiment method can be completed by a program instructing related hardware, and the program can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disc, optical disc, etc.

[0121] It can also be understood that the device structure shown in the drawings or the embodiments is only schematic and represents a logical structure. The modules shown as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules.

[0122] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. An airflow sensor, characterized in that, include: Electrode body, diaphragm, and fixture; among which, An airflow channel is provided at the center of the electrode body; The diaphragm is located in the airflow channel, the diaphragm is laid in the same direction as the gas flow direction of the airflow channel, the fixed end of the diaphragm is close to the airflow inlet end of the airflow channel, the free end of the diaphragm is far away from the airflow inlet end of the airflow channel, and a vibration gap is formed between the diaphragm and the inner surface of the electrode body. The fixing member is used to set the fixed end of the diaphragm on the electrode body; When airflow passes through the airflow channel, the diaphragm vibrates under the action of the airflow to generate an electrical signal, which is output by the electrode body as the output terminal of the airflow sensor. The electrode body further includes: a first electrode body and a second electrode body; A first strip-shaped groove is formed at the center of the first electrode body, and a second strip-shaped groove is formed at the center of the second electrode body. After the first electrode body and the second electrode body are assembled, the first strip-shaped groove and the second strip-shaped groove are arranged opposite to each other to form the airflow channel. The diaphragm forms vibration gaps with the inner surfaces of the first electrode and the second electrode, respectively. When airflow passes through the airflow channel, the diaphragm vibrates under the action of the airflow to generate an electrical signal, which is output by the first electrode and / or the second electrode as the output terminal of the airflow sensor. The electrode body formed by assembling the first electrode body and the second electrode body is further provided with a positioning groove; the fixing member is provided in the positioning groove; the fixing member has the same thickness as the positioning groove, so that the diaphragm is located on the central axis of the horizontal direction of the airflow channel, so that the vibration gap formed between the diaphragm and the inner surface of the electrode body at the top and bottom of the airflow channel is the same size.

2. The airflow sensor according to claim 1, characterized in that, The thickness of the diaphragm is 0.005mm to 0.15mm.

3. The airflow sensor according to claim 2, characterized in that, The thickness of the diaphragm is 0.01 mm.

4. The airflow sensor according to claim 1, characterized in that, The diaphragm is a T-shaped diaphragm; wherein, the upper end of the T-shaped diaphragm is the fixed end of the diaphragm, and the lower end is the free end of the diaphragm.

5. The airflow sensor according to any one of claims 1-4, characterized in that, The distance between the positioning groove and the airflow inlet of the airflow channel is greater than or equal to 1 / 3 of the length of the electrode body.

6. The airflow sensor according to claim 1, characterized in that, Also includes: An insulating sealing strip; wherein the insulating sealing strip further comprises: a first insulating sealing strip and a second insulating sealing strip; The first insulating sealing strip is disposed between the first contact surfaces of the first electrode body and the second electrode body after they are assembled; the second insulating sealing strip is disposed between the second contact surfaces of the first electrode body and the second electrode body after they are assembled.

7. The airflow sensor according to claim 1 or 6, characterized in that, Also includes: The conductor; wherein the conductor further comprises: a first conductor and a second conductor; The first wire is disposed on the first electrode body and is used to output the electrical signal on the first electrode body; the second wire is disposed on the second electrode body and is used to output the electrical signal on the second electrode body.

8. The airflow sensor according to claim 7, characterized in that, Also includes: Insulating sleeves and insulating sheets; The insulating sleeve is fitted onto the electrode body and is a cylindrical structure with a top wall, an opening at the bottom, and an internal cavity; a first airflow hole is provided on the top wall of the insulating sleeve. The insulating sheet is provided with a first wire hole, a second wire hole, and a second airflow hole, and the insulating sheet is disposed at the bottom of the insulating sleeve; The electrode body is enclosed within the insulating sleeve and the insulating sheet; the first wire is led out sequentially through the opening at the bottom of the insulating sleeve and the first wire hole, and the second wire is led out sequentially through the opening at the bottom of the insulating sleeve and the second wire hole; the first airflow hole, the second airflow hole, and the airflow channel are interconnected.

9. The airflow sensor according to claim 8, characterized in that, The cavity formed by the insulating sleeve and the insulating sheet matches the shape and size of the electrode body; and / or The insulating sheet and the bottom of the insulating sleeve have the same cross-sectional shape and dimensions; and / or, The first airflow hole and / or the second airflow hole have the same shape and size as the longitudinal section of the airflow channel.

10. The airflow sensor according to claim 8 or 9, characterized in that, Also includes: Shielding shell and sealing cover; The shielding shell is fitted onto the insulating sleeve and the insulating sheet. The shielding shell is a cylindrical structure with an opening at the top, a bottom wall at the bottom, and an internal cavity. The bottom wall of the shielding shell is provided with a third wire hole, a fourth wire hole, and a third airflow hole. The sealing cover is provided with a fourth airflow hole, and the sealing cover is disposed on the top of the shielding shell; The insulating sleeve and the insulating sheet are enclosed inside the shielding shell and the sealing cover; the first wire is led out sequentially through the opening at the bottom of the insulating sleeve, the first wire hole and the third wire hole, and the second wire is led out sequentially through the opening at the bottom of the insulating sleeve, the second wire hole and the fourth wire hole; the first airflow hole, the second airflow hole, the third airflow hole, the fourth airflow hole and the airflow channel are interconnected.

11. The airflow sensor according to claim 10, characterized in that, The cavity formed by the shielding shell and the sealing cover plate matches the shape and size of the covering body formed by the insulating sleeve and the insulating sheet; and / or The sealing cover plate has the same shape and dimensions as the top cross-section of the shielding shell; and / or, The first airflow hole, the second airflow hole, the third airflow hole and / or the fourth airflow hole have the same shape and size as the longitudinal section of the airflow channel.

12. An electronic cigarette, characterized in that, Including the airflow sensor as described in any one of claims 1 to 11.

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