Welding-free microporous atomizing sheet

Abstract

The utility model relates to the technical field of atomization, and discloses a welding-free micropore atomization sheet which sequentially comprises piezoelectric ceramics, a macromolecule membrane and a metal steel sheet from top to bottom. A notch is formed in the edge of the metal steel sheet; a first conductive area is arranged on the face, used for being attached to the metal steel sheet, of the piezoelectric ceramic. A second conductive area is arranged in the area, corresponding to the notch, of the piezoelectric ceramic, and the second conductive area extends to the other face of the piezoelectric ceramic along the side wall of the piezoelectric ceramic to sequentially form a third conductive area and a fourth conductive area; and an insulating region is arranged between the first conductive region and the second conductive region. The positive electrode and the negative electrode of the atomization sheet are on the same plane, lug welding of a steel sheet is not needed, the process can be simplified, the structural space is optimized, the labor cost is reduced, the reject ratio caused by welding wires is reduced, press fit of a waterproof ring is not affected, and the atomization effect is good. The atomizing sheet can be in direct contact with a vibrating needle and other structures, the design mode is simplified, and the bad atomizing sheet can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization, in particular to a non-welded microporous atomization sheet. Background Art

[0002] As people's awareness of respiratory health improves, portable nebulizers are being widely used. The nebulizer uses high-frequency vibration of piezoelectric ceramics to eject liquid through tiny holes to form water mist, so that patients can achieve the therapeutic effect. The atomizer is the core component of the nebulizer and is the main factor affecting the atomization effect and user experience. The traditional atomizer is a piezoelectric ceramic sheet. Through the direct current connected to the upper and lower ends of the piezoelectric ceramic sheet, the high-frequency resonance is used to transmit the vibration of the atomizer steel sheet to the atomizer sheet to achieve spraying.

[0003] However, the traditional way of conducting electricity in atomizer sheets is to weld wires to ceramic sheets and metal sheets. Since the welding points are exposed, there is a short circuit, so waterproofing is required. The welding points will exert vertical pressure on the ceramic sheet, and there may even be lateral shear force, which is not conducive to the vibration of the atomizer sheet. When designing waterproofing, since the welding points are higher than the plane, the silicone rings or silicone sleeves on both sides cannot be flattened, affecting the waterproof effect. In addition, the stress point of the waterproof silicone is at the welding point that is higher than the plane. The pressing force affects the vibration of the ceramic sheet, causing the atomization rate to decrease and affecting the treatment effect. Therefore, the existing atomizer sheets on the market have the following problems:

[0004] (1) The height of the welding point affects the structural space, and ears need to be added to the steel sheet for conduction, which increases the overall size of the atomizer sheet;

[0005] (2) The use of waterproof rings to press the height of the welding point affects the vibration of the ceramic piece, reduces the atomization effect, and affects the working performance;

[0006] (3) Module technology: The positive and negative electrodes of the atomizers currently on the market are not on the same surface, which is not suitable for pin design and cannot simplify the structure.

[0007] Therefore, it is urgent to develop a non-welded microporous atomizing sheet. Utility Model Content

[0008] In view of the deficiencies of the prior art, the purpose of the present utility model is to provide a non-welded microporous atomizer sheet. When in use, the atomizer sheet of the present utility model respectively abuts the metal steel sheet and the second conductive area through two spring pins, the positive electrode (or negative electrode) of the power supply is sequentially connected to the metal steel sheet and the first conductive area of ​​the piezoelectric ceramic bonded to the metal steel sheet, and the negative electrode (or positive electrode) of the power supply is connected to the second conductive area. The first conductive area and the second conductive area are disconnected by the insulating area, so that the positive and negative poles are on the same surface, but the positive and negative poles are separated, so that the ears of the steel sheet do not need to be welded, making the atomizer sheet design more compact. There are no welding points, which simplifies the process, optimizes the structural space, reduces labor costs, reduces the defective rate caused by welding wires, and does not affect the lamination of the waterproof ring, and has a good atomization effect. There are no welding wires, which reduces the possibility of short circuits caused by the overlap of the positive and negative wires, and avoids affecting the performance.

[0009] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0010] A non-welded microporous atomizing sheet, characterized in that it comprises three layers of structure from top to bottom: a piezoelectric ceramic, a polymer diaphragm and a metal steel sheet;

[0011] A first through hole is provided in the middle of the piezoelectric ceramic, and the aperture of the first through hole is larger than the aperture of the spray through hole;

[0012] A second through hole is provided in the middle of the metal steel sheet, and the aperture of the second through hole is smaller than the aperture of the first through hole; a notch is provided at the edge of the metal steel sheet;

[0013] A first conductive region is provided on one side of the piezoelectric ceramic used for bonding with the metal steel sheet; a second conductive region is provided in the region of the piezoelectric ceramic corresponding to the notch, and the second conductive region extends along the side wall of the piezoelectric ceramic to the other side of the piezoelectric ceramic to form a third conductive region and a fourth conductive region in sequence; an insulating region is provided between the first conductive region and the second conductive region.

[0014] Preferably, the polymer membrane is a polyimide membrane, and the polyimide membrane is provided with a plurality of atomization pores.

[0015] Preferably, the first conductive region, the second conductive region, the third conductive region and the fourth conductive region are silver-plated conductive regions.

[0016] Preferably, the metal steel sheet is provided with ears.

[0017] Preferably, the atomizing sheet is abutted by a spring pin.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model sets a first conductive area on the side of the piezoelectric ceramic used to fit with the metal steel sheet, sets a second conductive area in the area corresponding to the gap between the piezoelectric ceramic and the metal steel sheet, and sets an insulating area between the first conductive area and the second conductive area. When in use, two spring pins are used to respectively abut the metal steel sheet and the second conductive area, the positive electrode (or negative electrode) of the power supply is connected to the metal steel sheet and the first conductive area of ​​the piezoelectric ceramic fitted with the metal steel sheet in turn, and the negative electrode (or positive electrode) of the power supply is connected to the second conductive area. The first conductive area and the second conductive area are disconnected by the insulating area, so that the positive and negative poles are on the same surface, but the positive and negative poles are separated, so that the ear welding of the steel sheet is not required, and the design of the atomizer sheet is made more compact. There are no welding points, which simplifies the process, optimizes the structural space, reduces labor costs, reduces the defective rate caused by welding wires, and does not affect the lamination of the waterproof ring, and has a good atomization effect. There are no welding lines, which reduces the possibility of short circuits caused by the overlap of the positive and negative wires, and avoids affecting the performance. The atomizer sheet can be directly contacted with structures such as spring pins, which simplifies the design and facilitates the replacement of defective atomizer sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the exploded structure of a non-welded microporous atomizing sheet of the utility model;

[0021] Figure 2 It is a structural schematic diagram of one side of the piezoelectric ceramic and the metal steel sheet in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the side of the piezoelectric ceramic in the utility model that is not in contact with the metal steel sheet;

[0023] Figure 4 The utility model is a structural schematic diagram of a non-welded microporous atomizing sheet applied to an atomizing sheet module. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments.

[0025] See also Figure 1-4 : A non-welded microporous atomizing sheet, which comprises three layers from top to bottom: a piezoelectric ceramic 1, a polymer diaphragm 2 and a metal steel sheet 3. Among them:

[0026] A first through hole 11 is provided in the middle of the piezoelectric ceramic 1 , and the aperture of the first through hole 11 is larger than the aperture of the spray through hole.

[0027] A second through hole 31 is provided in the middle of the metal steel sheet 3 , and the diameter of the second through hole 31 is smaller than the diameter of the first through hole 11 . A notch 32 is provided at the edge of the metal steel sheet 3 .

[0028] A first conductive region 12 is provided on one side of the piezoelectric ceramic 1 for bonding with the metal steel sheet 3. A second conductive region 13 is provided in the region of the piezoelectric ceramic 1 corresponding to the notch 32. The second conductive region 13 extends along the side wall of the piezoelectric ceramic 1 to the other side of the piezoelectric ceramic 1 to form a third conductive region 14 and a fourth conductive region 15 in sequence. An insulating region 16 is provided between the first conductive region 12 and the second conductive region 13. The insulating region 16 is not limited to insulating materials, as long as it can be insulated and separated.

[0029] The polymer membrane 2 is preferably a polyimide membrane, and the polyimide membrane is provided with a plurality of atomization pores.

[0030] The first conductive region 12, the second conductive region 13, the third conductive region 14, and the fourth conductive region 15 are silver-plated conductive regions. In actual use, they are not limited to silver-plated conductive regions, as long as they have a conductive function.

[0031] The metal steel sheet part of the atomizer can be made into ears to consume the original material inventory, or it can be omitted to make the finished product design more compact and convenient to carry.

[0032] The piezoelectric ceramic 1 of the present invention can be in different shapes, not limited to Figure 1-4 The size of the atomizer sheet is not limited and can be of different specifications.

[0033] Figure 4 The atomizer sheet of the utility model is applied to the atomizer sheet module. The atomizer sheet module includes a module upper cover 5, the atomizer sheet 4 of the utility model, a spring pin 7, waterproof rings 6 and 8, and a module lower cover 9. The atomizer sheet 4 of the utility model can be directly contacted by a spring pin and other structures, which simplifies the design and facilitates the replacement of defective atomizer sheets.

[0034] The utility model sets a first conductive area on the side of the piezoelectric ceramic used to bond with the metal steel sheet, sets a second conductive area in the area corresponding to the gap between the piezoelectric ceramic and the metal steel sheet, and sets an insulating area between the first conductive area and the second conductive area. When in use, two spring pins respectively abut the metal steel sheet and the second conductive area, the positive electrode (or negative electrode) of the power supply sequentially connects the metal steel sheet and the first conductive area of ​​the piezoelectric ceramic bonded with the metal steel sheet, and the negative electrode (or negative electrode) of the power supply connects the second conductive area. The first conductive area and the second conductive area are disconnected by the insulating area, so that the positive and negative poles are on the same surface, but the positive and negative poles are separated, so that the ear welding of the steel sheet is not required, and the atomizer sheet is designed to be more compact. There are no welding points, which simplifies the process, optimizes the structural space, reduces labor costs, reduces the defective rate caused by welding wires, and does not affect the lamination of the waterproof ring, and the atomization effect is good. There are no welding wires, which reduces the possibility of short circuits caused by the overlap of the positive and negative wires, and avoids affecting the performance.

[0035] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A non-welded microporous atomizing sheet, characterized in that: From top to bottom, it includes three layers of structure: piezoelectric ceramics, polymer diaphragm and metal steel sheet; A first through hole is provided in the middle of the piezoelectric ceramic, and the aperture of the first through hole is larger than the aperture of the spray through hole; A second through hole is provided in the middle of the metal steel sheet, and the aperture of the second through hole is smaller than the aperture of the first through hole; a notch is provided at the edge of the metal steel sheet; A first conductive region is provided on one side of the piezoelectric ceramic used for bonding with the metal steel sheet; a second conductive region is provided in the region of the piezoelectric ceramic corresponding to the notch, and the second conductive region extends along the side wall of the piezoelectric ceramic to the other side of the piezoelectric ceramic to form a third conductive region and a fourth conductive region in sequence; an insulating region is provided between the first conductive region and the second conductive region.

2. The weld-free microporous atomizing sheet according to claim 1, characterized in that: The polymer membrane is a polyimide membrane, and the polyimide membrane is provided with a plurality of atomization pores.

3. The weld-free microporous atomizing sheet according to claim 1, characterized in that: The first conductive region, the second conductive region, the third conductive region, and the fourth conductive region are silver-plated conductive regions.

4. The weld-free microporous atomizing sheet according to claim 1, characterized in that: The metal steel sheet is provided with ears.

5. The weld-free microporous atomizing sheet according to claim 1, characterized in that: The atomizing sheet is abutted by a spring needle.

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