A highly stable microporous atomizing plate suitable for pure essential oils

Abstract

This utility model relates to a highly stable microporous atomizing sheet suitable for pure essential oils, comprising, from top to bottom, a solder resist layer, an upper silver electrode, a piezoelectric ceramic ring, a lower silver electrode, an adhesive layer, and a stainless steel sheet, all fixedly connected. A central hole is provided in the middle of each of the solder resist layer, the upper silver electrode, the piezoelectric ceramic ring, the lower silver electrode, and the adhesive layer. The inner diameter D1 of the piezoelectric ceramic ring is 2mm-4mm. The stainless steel sheet has an upward-facing bulge at its center, the position of which corresponds to the central hole of each layer. The vertical projection diameter of the bulge is D2 < D1. A cluster of trumpet-shaped micropores penetrating the sheet is provided at the top of the bulge. The diameter of the micropore distribution area is D3 < 1.5 mm, the number of micropores N < 100, and the spacing between pores S > 0.1 mm. This utility model can effectively suppress amplitude attenuation caused by high-viscosity liquids, break the liquid film bridges formed between the pores by high-viscosity liquids, avoid "liquid leakage," increase the vibration frequency, and make the atomized particles finer and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric microporous atomization technology, and in particular to a microporous atomizing sheet structure that can stably atomize liquids with high dynamic viscosity (dynamic viscosity > 5 cP, such as pure essential oils extracted from plants). Background Technology

[0002] Existing piezoelectric microporous atomizing plates generally use water (dynamic viscosity 1 cP) as the working medium, with 1%-10% pure essential oil added. Its dynamic viscosity is <5.00 × 10⁻³ Pa·s (5 cP). When the dynamic viscosity of the liquid increases to above 5 cP, traditional atomizing plates fail to atomize properly; the liquid only emerges from the micropores, leading to atomization failure. The reasons are: 1) The ceramic plate has a large inner diameter (≥ 5 mm), the bonding area between the steel plate and ceramic is small, the suspended area is large, and the system rigidity is insufficient; 2) The vertical projection diameter of the convex hull is large, resulting in energy dispersion and a small central amplitude; 3) The number of micropores is large (≥ 300 pores), and the pore spacing is small (≤ 0.05 mm), making it easy for high-viscosity liquids to connect between the pores and form a liquid film, clogging the channels. Therefore, the market urgently needs a microporous atomizing plate that can stably atomize high-viscosity liquids such as pure essential oils. Utility Model Content

[0003] The purpose of this invention is to solve the problem of existing microporous atomizing plates failing to properly atomize high-viscosity liquids, as described in the background art, and to provide a highly stable microporous atomizing plate suitable for pure essential oils.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A highly stable microporous atomizing plate suitable for pure essential oils includes, from top to bottom, a solder resist layer, an upper silver electrode, a piezoelectric ceramic ring, a lower silver electrode, an adhesive layer, and a stainless steel sheet, all fixedly connected. A central hole is provided in the middle of each of the solder resist layer, the upper silver electrode, the piezoelectric ceramic ring, the lower silver electrode, and the adhesive layer. The inner diameter D1 of the piezoelectric ceramic ring is 2 mm ≤ D1 ≤ 4 mm. A convex bulge is provided at the center of the stainless steel sheet, its position corresponding to the central hole of each layer. The bulge protrudes upwards from the stainless steel sheet, and its vertical projection diameter D2 < D1. A funnel-shaped micropore group penetrating the steel sheet is provided at the top of the bulge. The diameter of the micropore group distribution area D3 < 1.5 mm, the number of micropores N < 100, and the pore spacing S > 0.1 mm.

[0005] In the above scheme, the height h of the convex hull is 0.15 mm ≤ h ≤ 0.3 mm, and the top of the convex hull is shaped like a spherical crown or a frustum conical.

[0006] In the above scheme, the adhesive layer is an essential oil-resistant epoxy resin with a shear strength ≥ 15 MPa and a thickness of 10–30 μm after curing.

[0007] In the above scheme, the piezoelectric ceramic ring is provided with positioning protrusions, and the solder resist layer and the upper silver electrode are provided with through holes at positions corresponding to the positioning protrusions. The positioning protrusions on the piezoelectric ceramic ring extend through the through holes to the top of the solder resist layer. With this arrangement, the piezoelectric ceramic ring, solder resist layer and upper silver electrode can be positioned by the positioning protrusions, preventing relative displacement of the three-layer structure and improving its structural stability.

[0008] In the above solution, the stainless steel sheet has connecting ears at its edge, and connecting protrusions on the connecting ears. The connecting ears and connecting protrusions facilitate the fixed connection of the microporous atomizing sheet to the atomizing device.

[0009] This invention offers several advantages: The high-stability microporous atomizing sheet suitable for pure essential oils features a piezoelectric ceramic ring with an inner diameter reduced to 2-4 mm. While maintaining the same outer diameter, the increased bonding area between the stainless steel sheet and the piezoelectric ceramic ring enhances system rigidity and reduces the suspended area, effectively suppressing amplitude attenuation caused by high-viscosity liquids. Furthermore, the reduced vertical projection diameter of the convex hull concentrates piezoelectric energy in the central micropore region, increasing the central amplitude by over 30%. With fewer than 100 micropores and a spacing of more than 0.1 mm, the liquid film bridges formed between the pores by high-viscosity liquids are broken, preventing "liquid leakage." Maintaining the same outer diameter while reducing the ceramic inner diameter increases the vibration frequency, resulting in finer atomized particles and higher efficiency. The overall structure is compatible with existing piezoelectric atomizing sheet production lines; mass production can be achieved simply by changing the press and the convex hull mold. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the high-stability microporous atomizing plate suitable for pure essential oils according to this utility model.

[0011] Figure 2 This is an exploded view of the highly stable microporous atomizing plate suitable for pure essential oils according to this utility model.

[0012] Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0013] The attached figures are labeled as follows: 1. Solder resist layer; 2. Upper silver electrode; 3. Piezoelectric ceramic ring; 4. Lower silver electrode; 5. Adhesive layer; 6. Stainless steel sheet; 7. Protrusion; 8. Micropore group; 9. Positioning protrusion; 10. Connecting lug; 11. Connecting protrusion. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] like Figure 1 As shown, the high-stability microporous atomizing plate of this utility model, suitable for pure essential oils, includes a solder resist oil layer 1, an upper silver electrode 2, a piezoelectric ceramic ring 3, a lower silver electrode 4, an adhesive layer 5, and a stainless steel sheet 6, which are fixedly connected from top to bottom. A central hole is provided in the middle of each of the solder resist oil layer 1, the upper silver electrode 2, the piezoelectric ceramic ring 3, the lower silver electrode 4, and the adhesive layer 5. The inner diameter D1 of the piezoelectric ceramic ring 3 is 2 mm ≤ D1 ≤ 4 mm. A convex bulge 7 is provided in the center of the stainless steel sheet 6, and the position of the convex bulge 7 corresponds to the central hole of each layer. The convex bulge 7 protrudes upwards from the stainless steel sheet 6, and the vertical projection diameter D2 < D1 of the convex bulge 7 is provided. A funnel-shaped micropore group 8 penetrating the steel sheet is provided at the top of the convex bulge 7. The diameter of the distribution area of ​​the micropore group 8 is D3 < 1.5 mm, the number of micropores N < 100, and the spacing between the pores S > 0.1 mm.

[0016] The height and shape of the convex hull 7 can be designed as needed. For example, as a preferred embodiment, the height h of the convex hull 7 can be designed to be 0.15 mm ≤ h ≤ 0.3 mm, and the top of the convex hull 7 can be designed as a spherical crown or a frustum shape.

[0017] As a preferred embodiment, the adhesive layer 5 can be designed as an essential oil-resistant epoxy resin with a shear strength ≥ 15MPa and a thickness of 10–30μm after curing.

[0018] In a preferred embodiment, the piezoelectric ceramic ring 3 is provided with positioning protrusions 9, and the solder resist layer 1 and the upper silver electrode 2 are provided with through holes at positions corresponding to the positioning protrusions 9. The positioning protrusions 9 on the piezoelectric ceramic ring 3 extend through the through holes to the top of the solder resist layer 1. With this arrangement, the piezoelectric ceramic ring 3, the solder resist layer 1, and the upper silver electrode 2 can be positioned by the positioning protrusions 9, preventing relative displacement of the three-layer structure and improving its structural stability.

[0019] In a preferred embodiment, the stainless steel sheet 6 has a connecting lug 10 at its edge, and a connecting protrusion 11 on the connecting lug 10. By providing the connecting lug 10 and the connecting protrusion 11, it is convenient to fix the microporous atomizing sheet to the atomizing device.

[0020] This invention relates to a high-stability microporous atomizing plate suitable for pure essential oils. The inner diameter of the piezoelectric ceramic ring is reduced to 2-4 mm. While maintaining the outer diameter of the piezoelectric ceramic ring, the increased bonding area between the stainless steel sheet and the piezoelectric ceramic ring enhances system rigidity and reduces the suspended area, effectively suppressing amplitude attenuation caused by high-viscosity liquids. The reduced vertical projection diameter of the convex hull in this high-stability microporous atomizing plate for pure essential oils concentrates piezoelectric energy in the central micropore region, increasing the central amplitude by over 30%. With fewer than 100 micropores and a spacing of more than 0.1 mm, the liquid film bridges formed between the pores by high-viscosity liquids are broken, preventing "liquid leakage." Maintaining the outer diameter while reducing the inner diameter of the ceramic increases the vibration frequency, resulting in finer atomized particles and higher efficiency. The overall structure is compatible with existing piezoelectric atomizing plate production lines; mass production can be achieved by simply changing the press and the convex hull mold.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-stability microporous atomizing sheet suitable for pure essential oil, characterized by, The assembly comprises, from top to bottom, a solder resist layer, an upper silver electrode, a piezoelectric ceramic ring, a lower silver electrode, an adhesive layer, and a stainless steel sheet, all fixedly connected. Each of these layers has a central hole in its middle section. The inner diameter D1 of the piezoelectric ceramic ring is 2 mm ≤ D1 ≤ 4 mm. The stainless steel sheet has a central bulge, the position of which corresponds to the central hole of each layer. The bulge protrudes upwards from the stainless steel sheet, and its vertical projection diameter D2 < D1. The top region of the bulge has a funnel-shaped group of micropores penetrating the sheet. The diameter of the micropore distribution area D3 < 1.5 mm, the number of micropores N < 100, and the spacing between the micropores S > 0.1 mm.

2. The high stability microporous atomizing sheet suitable for pure essential oil according to claim 1, characterized by: The height h of the convex hull is 0.15 mm ≤ h ≤ 0.3 mm, and the top of the convex hull is shaped like a spherical crown or a frustum conical.

3. The high stability micro-porous atomizing sheet suitable for pure essential oil according to claim 1, characterized in that: The adhesive layer is made of essential oil-resistant epoxy resin, with a shear strength ≥ 15 MPa and a thickness of 10–30 μm after curing.

4. The high stability microporous atomizing sheet suitable for pure essential oil according to claim 1, characterized by: The piezoelectric ceramic ring is provided with positioning protrusions, and the solder resist layer and the upper silver electrode are provided with through holes at positions corresponding to the positioning protrusions. The positioning protrusions on the piezoelectric ceramic ring extend through the through holes to the top of the solder resist layer.

5. The high-stability microporous atomizing plate for pure essential oils according to claim 1, characterized in that: The stainless steel sheet is provided with connecting ears at its edge, and connecting protrusions are provided on the connecting ears.

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