Air intake structure and electronic smoking device

Abstract

The utility model relates to an air inlet structure and electronic smoking set, air inlet structure includes: including: the air warehouse has the lateral wall, and is provided with the air inlet on lateral wall, and the air warehouse is communicated to the outside atmosphere through air inlet, the flow noise reduction block is set up in the air warehouse, and is aligned with air inlet, flow noise reduction block sets up the through -going vortex suppression hole in its lower part, wherein, flow noise reduction block is configured to the one -way main stream that enters the air warehouse from air inlet is guided into two, and the vortex suppression hole is configured to suppress the symmetric backflow vortex caused by flow noise reduction block. The utility model solves the flow noise reduction block that sets up in the air inlet downstream, and the high -speed jet flow is effectively guided and redistributes as two even, stable branch, significantly improves the flow field uniformity and stability to the flow to the atomization core entrance. Meanwhile, the vortex suppression hole that sets up on flow noise reduction block can effectively suppress the size and intensity of its downstream backflow vortex, thereby reducing the air flow resistance and vortex noise.

Description

Technical Field

[0001] This utility model relates to the field of electronic cigarettes, and in particular to air intake structures and electronic cigarette devices. Background Technology

[0002] In electronic cigarette duct structures employing a side-intake design, such as Figure 1 and Figure 2 As shown, the gas from the outside atmosphere is throttled and accelerated through the air inlet 101 on the side wall of the air chamber 100, forming a high-speed mainstream. This mainstream is usually directly introduced into a relatively open air chamber (located inside the air chamber 100). During this process, the high-speed airflow crosses the air chamber in an almost jet-like manner, and after impacting the opposite side wall, it undergoes wall-connected splitting.

[0003] However, this unguided flow pattern has significant drawbacks: First, the complex flow field generated after the flow splits at the wall can interfere with or even hinder the smooth and efficient entry of subsequent airflow into the atomizing core inlet 105, affecting the aerosol generation efficiency. Second, and more significantly, this high-speed jet that develops disorderly within the air passage chamber itself becomes a strong source of aerodynamic noise, producing unpleasant airflow sounds and ultimately reducing the user's vaping experience. Utility Model Content

[0004] Based on this, an air intake structure and electronic cigarette device are provided. By using a flow-guiding and noise-reducing block located downstream of the air intake, the high-speed jet is effectively guided and redistributed into two uniform and stable streams, significantly improving the uniformity and stability of the flow field towards the atomizer core inlet. Simultaneously, the vortex-suppressing holes on the flow-guiding and noise-reducing block effectively suppress the size and intensity of the downstream backflow vortex, thereby reducing airflow resistance and vortex noise.

[0005] In a first aspect, an air intake structure is provided, comprising: an air passage chamber having a sidewall and an air inlet provided on the sidewall, the air passage chamber being connected to the outside atmosphere through the air inlet; a flow guide and noise reduction block disposed within the air passage chamber and aligned with the air inlet, the flow guide and noise reduction block having a through-hole for suppressing vortexes at its lower part; wherein the flow guide and noise reduction block is configured to guide the unidirectional main flow entering the air passage chamber from the air inlet into two streams, and the vortex suppression hole is configured to suppress symmetrical backflow vortices caused by the flow guide and noise reduction block.

[0006] In one embodiment, the cross-section of the airflow-guiding noise reduction block is an isosceles right-angled shape, including a right-angled portion and two right-angled side portions, the right-angled portion facing the air inlet, and the two right-angled side portions being symmetrical about the air intake direction of the air inlet.

[0007] In one embodiment, the right-angled portion is provided with rounded corners.

[0008] In one embodiment, the radius of the fillet ranges from 0.75 mm to 1.25 mm.

[0009] In one embodiment, the distance from the center of the rounded corner to the axis of the atomizing core ranges from 3mm to 4.5mm.

[0010] In one embodiment, the air passage chamber has an upper wall and a lower wall, and the flow guiding and noise reduction block has an upper end face and a lower end face, the upper end face of the flow guiding and noise reduction block extending to the upper wall of the air passage chamber, and the lower end face of the flow guiding and noise reduction block extending to the lower wall of the air passage chamber.

[0011] In one embodiment, the diameter of the vortex suppressor hole ranges from 0.5 mm to 1 mm.

[0012] In one embodiment, the flow-guiding noise reduction block further includes a beveled portion opposite to the right-angled portion, a first end of the vortex suppression hole extends to the right-angled portion, and a second end of the vortex suppression hole extends to the beveled portion.

[0013] Secondly, an electronic cigarette device is provided, equipped with an air intake structure as described in the first aspect.

[0014] In one embodiment, the electronic cigarette device includes: a housing; a lower support disposed inside the housing; and an upper support disposed inside the housing; wherein the lower support, the upper support, and a portion of the housing constitute the gas chamber.

[0015] The aforementioned air intake structure, through a flow-guiding and noise-reducing block located downstream of the air intake, effectively guides and redistributes the high-speed jet into two uniform and stable streams, significantly improving the uniformity and stability of the flow field towards the atomizer core inlet. Simultaneously, the vortex-suppressing holes on the flow-guiding and noise-reducing block effectively suppress the size and intensity of the downstream backflow vortex, thereby reducing airflow resistance and vortex noise. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the air intake structure in the prior art.

[0017] Figure 2 This is a schematic diagram of the air intake structure of the prior art from another perspective.

[0018] Figure 3 This is a schematic diagram of the air intake structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the air intake structure of this utility model from another perspective.

[0020] Figure 5 This is a schematic diagram showing the positions of the upper support and the airflow-guiding noise reduction block.

[0021] Figure 6 This is a schematic diagram of the flow-guiding noise reduction block.

[0022] Figure 7 This is a cross-sectional view of the flow-guiding noise reduction block.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Air chamber; 101. Air inlet; 102. Lower support; 103. Upper support; 104. Oil reservoir; 105. Atomizer coil inlet; 106. Upper wall; 107. Lower wall;

[0025] 200. Airflow guiding and noise reduction block; 201. Vortex suppression hole; 202. Right-angle section; 203. Right-angle side section; 204. Hydrated side section; 205. Upper end face; 206. Lower end face;

[0026] 300. Casing;

[0027] 400. Microphone sensor. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] In the description of this utility model, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The following is combined Figures 3 to 7 The air intake structure according to the embodiment of this utility model will be described.

[0031] like Figures 3 to 5 As shown, the air intake structure of this utility model includes: an air chamber 100 and a flow guide and noise reduction block 200.

[0032] The air passage 100 has a side wall, and an air inlet 101 is provided on the side wall. The air passage 100 is connected to the outside atmosphere through the air inlet 101. The air inlet 101 is also called a suction port.

[0033] The airflow guide and noise reduction block 200 is installed inside the air passage 100 and aligned with the air inlet 101. The airflow guide and noise reduction block 200 has a through-hole 201 at its lower part.

[0034] Among them, the flow guide and noise reduction block 200 is configured to guide the unidirectional mainstream flow entering the air chamber 100 from the air inlet 101 into two streams, and the vortex suppression hole 201 is configured to suppress the symmetrical backflow vortex caused by the flow guide and noise reduction block 200.

[0035] This invention utilizes a flow-guiding and noise-reducing block 200 located downstream of the air inlet 101 to effectively guide and redistribute the high-speed jet into two uniform and stable streams, significantly improving the uniformity and stability of the flow field towards the atomizing core inlet 105. Simultaneously, the vortex-suppressing holes 201 on the flow-guiding and noise-reducing block 200 effectively suppress the size and intensity of the downstream backflow vortex, thereby reducing airflow resistance and vortex noise. The synergistic effect of these structures significantly controls the overall aerodynamic noise within the air chamber 100, ultimately improving the comfort and quietness of the suction process.

[0036] Furthermore, such as Figures 4 to 6 As shown, the cross-section of the airflow deflector and noise reduction block 200 is an isosceles right-angled shape, and includes a right-angled portion 202 and two right-angled side portions 203. The right-angled portion 202 faces the air intake 101 to directly meet the airflow.

[0037] The symmetrical arrangement of the two right-angled sides 203 relative to the intake direction allows the airflow to be evenly divided into two streams after impacting the right-angled side 202, and then guided and diffused symmetrically and smoothly along the two right-angled sides 203. This symmetrical flow splitting structure helps to form a more balanced velocity and pressure distribution within the flow channel, thereby suppressing the generation of flow deviation and asymmetric vortices from the perspective of flow field structure.

[0038] like Figure 7 As shown, the flow guide noise reduction block 200 also includes a beveled portion 204 opposite to the right-angle portion 202. The first end of the vortex suppressor 201 extends to the right-angle portion 202, and the second end of the vortex suppressor 201 extends to the beveled portion 204, so that the vortex suppressor 201 penetrates the flow guide noise reduction block 200 in the air intake direction of the air intake port 101.

[0039] Furthermore, the right-angle portion 202 is provided with rounded corners. These rounded corners allow for a smoother flow deflection when the gas impacts the right-angle portion 202, effectively mitigating flow separation at this location. Combined with the aforementioned symmetrical guide surface design, these rounded corners further work together to reduce local flow losses and eddy intensity, thereby significantly reducing aerodynamic noise and flow energy loss while achieving the guiding function.

[0040] Furthermore, the radius of the fillet ranges from 0.75mm to 1.25mm.

[0041] Extensive fluid simulations and experimental verifications have revealed that designing fillets within this numerical range achieves the optimal balance between structural strength, manufacturing costs, and aerodynamic performance. If the fillet radius is too small (e.g., less than 0.75 mm), the optimization effect of the fillet on airflow guidance is not significant, and noticeable flow separation and vortices will still exist. Conversely, if the fillet radius is too large (e.g., greater than 1.25 mm), it will alter the overall isosceles right-angled triangular cross-sectional configuration of the flow guide and noise reduction block 200, weakening its inherent flow guiding and noise reduction characteristics.

[0042] Specifically, in one or more preferred embodiments, the radius of the fillet can be selected as any precise value among 0.75mm, 0.9mm, 1.0mm, 1.1mm, or 1.25mm. These specific numerical points represent optimized designs with different focuses: for example, a radius of 0.75mm focuses more on improving the basic flow field within a compact space and facilitating manufacturing; a radius of 1.0mm represents the optimal overall performance; while a radius of 1.25mm provides a solution for pursuing extremely low flow resistance within permissible geometric boundaries. By providing these specific, discrete radius values, clear and diverse design options are provided for those skilled in the art to implement this invention.

[0043] Furthermore, the distance between the center of the rounded corner and the axis of the atomizing core ranges from 3mm to 4.5mm. Specifically, the distance between the center of the rounded corner and the axis of the atomizing core is any value among 3mm, 3.5mm, 4mm, and 4.5mm.

[0044] Specifically, in several preferred embodiments, the distance from the center of the rounded corner to the axis of the atomizing core can be precisely selected as any value among 3mm, 3.5mm, 4mm, or 4.5mm. These specific distance values ​​provide clear and diverse design options for the actual assembly and application of this invention: for example, a distance of 3mm is suitable for designs with extremely compact structures and a focus on minimizing overall size; a distance of 4mm can be considered a preferred solution for achieving a balance between performance and size in most application scenarios; while a distance of 4.5mm may provide flexibility for designs that require the placement of other components or the reservation of a larger airflow expansion space. The rounded corner, in conjunction with this key positioning parameter, ensures that the fluid, after flowing through the atomizing core, can be smoothly and stably guided downstream, thereby improving the overall airflow efficiency of the system and effectively suppressing operating noise.

[0045] Furthermore, such as Figure 3 As shown, the air chamber 100 has an upper wall 106 and a lower wall 107, as... Figure 5 As shown, the flow-guiding and noise-reducing block 200 has an upper end face 205 and a lower end face 206. The upper end face 205 of the flow-guiding and noise-reducing block 200 extends to the upper wall 106 of the air passage chamber 100, and the lower end face 206 of the flow-guiding and noise-reducing block 200 extends to the lower wall 107 of the air passage chamber 100, thereby forming a complete and uninterrupted flow-guiding structure in the vertical direction. That is, the flow-guiding and noise-reducing block 200 penetrates the air passage chamber 100 in the height direction.

[0046] This through-type design brings multiple benefits: First, it establishes a complete vertical guide surface throughout the entire height space of the air chamber 100, which can guide and regulate the airflow entering from the air inlet 101 throughout its entire depth range, effectively avoiding possible flow around, crossflow, or local eddies in the height direction, ensuring the uniformity and stability of the flow field in three-dimensional space. Second, this structure enhances the rigidity of the flow guide and noise reduction block 200 itself and the connection stability with the shell of the air chamber 100, helping to suppress vibrations that may be generated under the impact of high-velocity airflow, thus structurally eliminating a potential source of vibration noise. Finally, this highly through-type flow guide and noise reduction block 200, together with the aforementioned isosceles right-angled triangular cross-section, right-angled portion with specific rounded corners, and precise positioning dimensions, constitutes a highly efficient, low-noise, and stable fluid guidance system, comprehensively optimizing the flow characteristics inside the air chamber 100.

[0047] Furthermore, the diameter of the vortex suppressor 201 ranges from 0.5 mm to 1 mm.

[0048] When the diameter of the vortex suppressor 201 is less than 0.5 mm, the dissipation and suction effect of the vortex suppressor 201 on the mainstream field will be significantly weakened, making it difficult to achieve the expected vortex suppression effect. In addition, the small aperture is more likely to be blocked during processing. Conversely, when the diameter of the vortex suppressor 201 is greater than 1 mm, the excessively large opening will excessively suck the airflow in the mainstream channel. Although it can suppress the vortex, it will introduce significant local flow loss, which is not worth the loss and may weaken the structural integrity of the flow guide noise reduction block 200 itself.

[0049] Specifically, the diameter of the vortex suppressor 201 can be selected from typical values ​​such as 0.5mm, 0.6mm, 0.8mm, or 1.0mm. A 0.5mm aperture is suitable for implementation schemes with extremely high structural strength requirements and where a moderate sacrifice in vortex suppression effect is acceptable; a 0.8mm aperture can be considered an implementation scheme that achieves a better balance between vortex suppression effectiveness and flow resistance; while a 1.0mm aperture is suitable for implementation schemes with large vortex intensity and where the system is not sensitive to increased flow resistance. The vortex suppressor 201, in conjunction with the specific cross-sectional shape, rounded corner design, and through-structure of the aforementioned flow guide and noise reduction block 200, can more accurately and efficiently eliminate or weaken the vortices generated near the right-angle portion 202 and in the airflow separation zone, thereby achieving noise reduction and drag reduction at the source of the flow field and jointly improving aerodynamic performance.

[0050] Furthermore, an oil-absorbing cotton 104 is provided on the lower surface of the air chamber 100. The oil-absorbing cotton 104 is used to absorb and store e-liquid, and uses its capillary action to transport the e-liquid to the atomizer core.

[0051] In the embodiment where the oil storage cotton 104 is provided, the lower end face 206 of the flow guiding and noise reduction block 200 may extend only to the oil storage cotton 104, or it may extend through the oil storage cotton 104 and then to the lower wall 107 of the air passage chamber 100.

[0052] After the outside air is throttled and accelerated through the air inlet 101, it forms a high-speed mainstream. This mainstream is guided into two streams of gas by the flow-guiding and noise-reducing block 200 in the air passage chamber 100, and is buffered in the air passage chamber 100. Then it enters the atomization pipe through the atomizing core inlet 105, which facilitates more complete heating of the aerosol product, thereby making the taste more stable.

[0053] The main stream is diverted into two streams of gas by the flow-guiding and noise-reducing block 200 within the gas chamber 100.

[0054] This utility model embodiment also provides an electronic cigarette device, which includes the air intake structure described in the above embodiments.

[0055] In an exemplary embodiment, the electronic cigarette device includes: a housing 300, a lower support 102, and an upper support 103.

[0056] The lower bracket 102 is disposed inside the housing 300, and the upper bracket 103 is disposed inside the housing 300 and located above the lower bracket 102.

[0057] The lower support 102, the upper support 103, and a portion of the shell 300 constitute the air chamber 100.

[0058] In one embodiment, the flow-guiding noise reduction block 200 is integrally formed with the upper bracket 103. Alternatively, the flow-guiding noise reduction block 200 can be fixed to one of the lower bracket 102 and the upper bracket 103 by means of snap-fit ​​or interference fit, or can be connected and fixed to both the lower bracket 102 and the upper bracket 103 simultaneously.

[0059] The electronic cigarette pack also includes a microphone sensor 400 (see attached image). Figure 3 The microphone sensor 400 is located at the end of the air chamber 100 furthest from the atomizer core. When the user inhales, external airflow enters through the air inlet 101, flows through the air chamber 100, and generates a slight change in air pressure or airflow speed at the end furthest from the atomizer core. The microphone sensor 400 sensitively detects this change in airflow state, generates an electrical signal, and transmits it to the control circuit (not shown in the figure) of the electronic cigarette device. Upon receiving the signal, the control circuit determines that the user has started inhaling and then drives the atomizer core to power on. The atomizer core heats the e-liquid stored in the oil reservoir 104, atomizing it and forming an aerosol that the user can inhale.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An air intake structure, characterized in that, include: An air chamber has a side wall and an air inlet is provided on the side wall, and the air chamber is connected to the outside atmosphere through the air inlet; A flow guide and noise reduction block is disposed in the air passage and aligned with the air inlet. The flow guide and noise reduction block has a through-hole for suppressing vortices at its lower part. The flow-guiding and noise-reducing block is configured to guide the unidirectional mainstream flow entering the air chamber from the air inlet into two streams, and the vortex-suppressing hole is configured to suppress the symmetrical backflow vortex caused by the flow-guiding and noise-reducing block.

2. The intake structure according to claim 1, characterized in that, The cross-section of the airflow-guiding noise reduction block is an isosceles right-angled shape, including a right-angled portion and two right-angled sides. The right-angled portion faces the air inlet, and the two right-angled sides are symmetrical about the air intake direction of the air inlet.

3. The intake structure according to claim 2, characterized in that, The right-angled portion is provided with rounded corners.

4. The intake structure according to claim 3, characterized in that, The radius of the fillet ranges from 0.75mm to 1.25mm.

5. The intake structure according to claim 3, characterized in that, The distance from the center of the rounded corner to the axis of the atomizing core ranges from 3mm to 4.5mm.

6. The intake structure according to claim 1, characterized in that, The air passage chamber has an upper wall and a lower wall, and the flow guiding and noise reduction block has an upper end face and a lower end face. The upper end face of the flow guiding and noise reduction block extends to the upper wall of the air passage chamber, and the lower end face of the flow guiding and noise reduction block extends to the lower wall of the air passage chamber.

7. The intake structure according to claim 2, characterized in that, The diameter of the vortex suppressor hole ranges from 0.5 mm to 1 mm.

8. The intake structure according to claim 2, characterized in that, The flow-guiding noise reduction block also includes a beveled portion opposite to the right-angled portion, the first end of the vortex suppression hole extends to the right-angled portion, and the second end of the vortex suppression hole extends to the beveled portion.

9. An electronic cigarette device, characterized in that, It is equipped with an air intake structure as described in any one of claims 1-8.

10. The electronic cigarette device according to claim 9, characterized in that, The electronic cigarette device includes: case; The lower support is disposed inside the housing; The upper support is disposed inside the housing; The lower support, the upper support, and a portion of the housing constitute the air chamber.

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