Composite microporous atomization sheet

Abstract

The utility model discloses a composite microporous atomization sheet, which comprises a driving ring, a vibrating plate and a microporous membrane, the driving ring and the microporous membrane are respectively arranged on two opposite sides of the vibrating plate, the driving ring and the vibrating plate are connected with each other through a first bonding layer, and the first bonding layer is arranged between the driving ring and the vibrating plate. The vibrating plate is connected with the microporous membrane through a first bonding layer, the vibrating plate is connected with the microporous membrane through a second bonding layer, the first bonding layer and the second bonding layer are both formed by adhesives, the microporous membrane comprises a membrane outer ring part and a microporous part, a plurality of liquid inlets are formed in one side of the microporous part, a plurality of mist outlets are formed in the other side of the microporous part, and the liquid inlets are communicated with the mist outlets. An atomization channel is formed between the liquid inlet and the mist outlet, and the driving ring is provided with a positive electrode contact and a negative electrode contact. According to the utility model, the resonant frequency can be improved, the atomization efficiency can be improved, a boss does not need to be punched on the microporous membrane, the consistency of the atomization amount and atomization particles is improved, invalid vibration can be inhibited, and noise can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of atomizing components, in particular to a composite microporous atomizing sheet. Background Art

[0002] In existing medical nebulizer devices, the atomization module is a key component, which is responsible for converting liquid drugs into inhalable tiny particles so that patients can inhale drugs through the respiratory system. The atomizer sheet of the existing nebulizer is usually composed of a piezoelectric ceramic ring and a microporous membrane, in which the piezoelectric ceramic ring and the microporous membrane are connected by bonding or other methods. This structural method has a low resonant frequency, low atomization efficiency, and a high temperature rise. In order to improve the atomization efficiency, it is necessary to stamp a boss in the middle of the microporous membrane, but after stamping the boss, the aperture of the microporous membrane will become larger, the aerosol particles of the atomization will also become larger, and the proportion of particles smaller than 5um will also increase. In addition, the stamped boss is easy to deform and eccentric, which will cause the boss to be not centered after the film is applied, resulting in the deviation of the fog outlet angle and the decrease of the fog outlet efficiency. It will also cause more invalid vibrations and generate loud noise. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a composite microporous atomizing sheet, which can improve the resonance frequency and the atomizing efficiency, and does not need to punch a boss on the microporous membrane, and the consistency of the atomizing amount and the atomizing frequency is good and the noise is low.

[0004] In order to solve the above technical problems, the utility model provides a composite microporous atomizing sheet, comprising a driving ring, a vibration plate and a microporous membrane, wherein the driving ring and the microporous membrane are respectively arranged on two opposite sides of the vibration plate.

[0005] The driving ring and the vibration plate are connected to each other via a first adhesive layer, and the vibration plate and the microporous membrane are connected to each other via a second adhesive layer.

[0006] The first adhesive layer and the second adhesive layer are both formed of an adhesive.

[0007] The driving ring includes a driving outer ring portion and a driving inner hole, wherein the driving inner hole is located at the center of the driving outer ring portion; the vibration plate includes a vibration outer ring portion and a vibration inner hole, wherein the vibration inner hole is located at the center of the vibration outer ring portion.

[0008] As an improvement of the above solution, the vibration plate is fixed to the driving outer ring portion, and a first through hole is provided in the middle of the first adhesive layer, and the size and position of the first through hole respectively correspond to the size and position of the driving inner hole.

[0009] As an improvement of the above solution, one side of the vibration outer ring portion is connected to the driving outer ring portion through the first adhesive layer, and the other side of the vibration outer ring portion is connected to the microporous membrane through the second adhesive layer.

[0010] As an improvement of the above solution, a second perforation is provided in the middle of the second adhesive layer, the size and position of the second perforation respectively correspond to the size and position of the vibration inner hole, and the diameter of the vibration inner hole is smaller than the diameter of the driving inner hole.

[0011] As an improvement of the above solution, the microporous membrane includes a membrane outer ring portion and a microporous portion, the microporous portion is located at the center of the membrane outer ring portion, and the diameter of the microporous portion is smaller than the diameter of the vibration inner hole.

[0012] As an improvement of the above solution, a plurality of liquid inlets are provided on one side of the microporous portion, a plurality of mist outlets are provided on the other side of the microporous portion, and an atomization channel is formed between the liquid inlets and the mist outlets.

[0013] As an improvement of the above solution, the diameter of the liquid inlet is larger than the diameter of the mist outlet, and the atomization channel gradually narrows from the liquid inlet toward the mist outlet.

[0014] As an improvement of the above solution, a positive contact and a negative contact are provided on the driving ring.

[0015] As an improvement of the above solution, the vibration plate and the microporous membrane are both made of metal materials.

[0016] The implementation of this utility model has the following beneficial effects:

[0017] The utility model composite microporous atomizing sheet is provided with a driving ring, a vibration plate and a microporous membrane, wherein the driving ring and the microporous membrane are respectively arranged on opposite sides of the vibration plate, and the driving ring and the vibration plate are connected to each other by a first adhesive layer. Compared with the traditional atomizing sheet, the utility model composite microporous atomizing sheet adds a vibration plate between the driving ring and the microporous membrane, which increases the overall vibration frequency of the atomizing sheet and the number of vibrations per unit time, thereby improving the atomization efficiency and the atomization amount. Moreover, after the vibration plate is composited with the microporous membrane, it can replace the role of the traditional boss in amplifying the amplitude, thereby eliminating the boss and eliminating the need to stamp the boss on the microporous membrane, thereby preventing the occurrence of problems such as boss eccentricity and fog outlet angle deviation, and ensuring the uniformity of the aperture to prevent the aperture from becoming larger, thereby making the atomized particles smaller, and also improving the consistency of atomization effects such as the atomization amount and the atomized particles, and can also suppress invalid vibration and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the disassembled structure of the composite microporous atomizing sheet of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the microporous part of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0021] See also Figure 1 , the utility model embodiment discloses a composite microporous atomization sheet, including a drive ring 1, a vibration plate 3 and a microporous membrane 5, wherein the drive ring 1 and the microporous membrane 5 are respectively arranged on opposite sides of the vibration plate 3. The drive ring 1 is preferably a piezoelectric ceramic ring, and the drive ring 1 can generate radial vibration after receiving an electrical signal, and can drive the microporous membrane 5 to vibrate. The traditional atomization sheet usually has only a drive ring 1 and a microporous membrane 5. The utility model embodiment adds the vibration plate 3, which is used to form a vibrating atomization structure with the microporous membrane 5 as a whole. The vibration plate 3 increases the overall weight of the atomization sheet, increases the weight proportion of metal materials in the structure, can make the structure more stable, and the consistency of the vibration frequency is improved, so that the resonance spectrum is more consistent. The addition of the vibration plate 3 can increase the vibration frequency, improve the atomization efficiency, and at the same time can suppress the parasitic vibration of the microporous membrane 5 and reduce the working noise. The drive ring 1 and the vibration plate 3 are interconnected by a first adhesive layer 2, and the vibration plate 3 and the microporous membrane 5 are interconnected by a second adhesive layer 4. The first adhesive layer 2 and the second adhesive layer 4 are filled with adhesive so that the driving ring 1 is transmission-connected with the vibration plate 3 and the vibration plate 3 and the microporous membrane 5 are compounded into an integral structure.

[0022] The first adhesive layer 2 and the second adhesive layer 4 are both formed by adhesives. Types of adhesives include but are not limited to epoxy adhesives, acrylic adhesives, etc. The first adhesive layer 2 and the second adhesive layer 4 are formed by heating and curing the adhesives.

[0023] The driving ring 1 includes a driving outer ring portion 11 and a driving inner hole 12, wherein the driving inner hole 12 is located at the center of the driving outer ring portion 11, the driving outer ring portion 11 is used to fix the vibration plate 3, and the driving inner hole 12 is used to allow liquid or aerosol to pass through, the vibration plate 3 includes a vibration outer ring portion 31 and a vibration inner hole 32, wherein the vibration inner hole 32 is located at the center of the vibration outer ring portion 31.

[0024] The beneficial effects of the embodiments of the present utility model are as follows:

[0025] The composite microporous atomizer sheet of the utility model embodiment is provided with a driving ring 1, a vibration plate 3 and a microporous membrane 5, wherein the driving ring 1 and the microporous membrane 5 are respectively arranged on opposite sides of the vibration plate 3, and the driving ring 1 and the vibration plate 3 are interconnected by a first adhesive layer 2. Compared with the traditional atomizer sheet, the composite microporous atomizer sheet of the utility model adds a vibration plate 3 between the driving ring 1 and the microporous membrane 5, which increases the overall vibration frequency of the atomizer sheet and the number of vibrations per unit time, thereby improving the atomization efficiency and the atomization amount. Moreover, after the vibration plate 3 is composited with the microporous membrane 5, it can replace the role of the traditional boss in amplifying the amplitude, thereby eliminating the boss, and there is no need to stamp the boss on the microporous membrane 5, thereby preventing the problems of boss eccentricity and fog outlet angle deviation, and ensuring the uniformity of the aperture to prevent the aperture from becoming larger, thereby making the atomized particles smaller, and also improving the uniformity of atomization effects such as atomization amount and atomized particles, and can also suppress invalid vibration and reduce noise.

[0026] The vibration plate 3 is fixed to the driving outer ring portion 11, and a first through hole 21 is provided in the middle of the first adhesive layer 2. The size and position of the first through hole 21 respectively correspond to the size and position of the driving inner hole 12, and the first through hole 21 is used to allow liquid or aerosol to pass through.

[0027] The vibration outer ring part 31 is used to fix the driving ring 1 and the microporous membrane 5, the vibration inner hole 32 is used to allow liquid or aerosol to pass through, one side of the vibration outer ring part 31 is connected to the driving outer ring part 11 through the first adhesive layer 2, and the other side of the vibration outer ring part 31 is connected to the microporous membrane 5 through the second adhesive layer 4. The vibration plate 3 is made of metal material, and the metal material includes but is not limited to SUS304, SUS316, titanium alloy, pure titanium, etc.

[0028] During installation, the microporous membrane 5 is firstly laser-drilled and ultrasonically cleaned, and then the adhesive is coated on the vibration plate 3, and then the microporous membrane 5 is concentrically adhered to the vibration plate 3, and then the adhesive is coated on the driving ring 1, and then the driving ring 1 and the vibration plate 3 are concentrically adhered. After pressing and heating and curing, the adhesive between the driving ring 1 and the vibration plate 3 forms the first adhesive layer 2, and the adhesive between the vibration plate 3 and the microporous membrane 5 forms the second adhesive layer 4.

[0029] A second perforation 41 is provided in the middle of the second adhesive layer 4, and the size and position of the second perforation 41 respectively correspond to the size and position of the vibration inner hole 32, and the second perforation 41 is used to allow liquid or aerosol to pass through. The diameter of the vibration inner hole 32 is smaller than the diameter of the driving inner hole 12, and the atomized aerosol diffuses from the vibration inner hole 32 to the driving inner hole 12.

[0030] See also Figure 2 In order to improve the atomization efficiency, the microporous membrane 5 includes a membrane outer ring portion 51 and a microporous portion 52. The microporous portion 52 is located at the center of the membrane outer ring portion 51. The microporous portion 52 is formed by laser drilling. The microporous portion 52 is used to atomize the liquid. The diameter of the microporous portion 52 is smaller than the diameter of the vibrating inner hole 32. The liquid enters the microporous portion 52 and is discharged from the vibrating inner hole 32 after being atomized. A plurality of liquid inlets 521 are provided on one side of the microporous portion 52, and a plurality of mist outlets 522 are provided on the other side of the microporous portion 52. An atomization channel 523 is formed between the liquid inlet 521 and the mist outlet 522. The liquid inlet 521 contacts the liquid, and the mist outlet 522 contacts the air. The liquid enters the atomization channel 523 from the liquid inlet 521, and forms a mist after vibration and is discharged from the mist outlet 522.

[0031] Furthermore, the diameter of the liquid inlet 521 is greater than the diameter of the mist outlet 522, and the atomization channel 523 gradually narrows from the liquid inlet 521 to the mist outlet 522. The radial vibration of the driving ring 1 drives the vibration plate 3 to vibrate, and the vibration plate 3 drives the microporous portion 52 to vibrate axially. During the vibration process, the microporous portion 52 beats the liquid, so that the liquid enters the atomization channel 523 from the liquid inlet 521 and is squeezed out from the mist outlet 522 to form an aerosol, thereby achieving atomization.

[0032] In order to achieve electrical connection, the driving ring 1 is provided with a positive contact 13 and a negative contact 14. The vibration plate 3 and the microporous membrane 5 are both made of metal materials. The metal material of the microporous membrane 5 includes but is not limited to SUS304, SUS316, titanium alloy, pure titanium, etc.

[0033] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. A composite microporous atomizing sheet, characterized in that: It comprises a driving ring, a vibration plate and a microporous membrane, wherein the driving ring and the microporous membrane are respectively arranged on two opposite sides of the vibration plate; The driving ring and the vibration plate are connected to each other via a first adhesive layer, and the vibration plate and the microporous membrane are connected to each other via a second adhesive layer, and both the first adhesive layer and the second adhesive layer are formed of an adhesive; The driving ring includes a driving outer ring portion and a driving inner hole, wherein the driving inner hole is located at the center of the driving outer ring portion; the vibration plate includes a vibration outer ring portion and a vibration inner hole, wherein the vibration inner hole is located at the center of the vibration outer ring portion.

2. The composite microporous atomizing sheet according to claim 1, characterized in that: The vibration plate is fixed to the driving outer ring portion, and a first through hole is provided in the middle of the first adhesive layer, and the size and position of the first through hole respectively correspond to the size and position of the driving inner hole.

3. The composite microporous atomizing sheet according to claim 1, characterized in that: One side of the vibration outer ring portion is connected to the driving outer ring portion through the first adhesive layer, and the other side of the vibration outer ring portion is connected to the microporous membrane through the second adhesive layer.

4. The composite microporous atomizing sheet according to claim 1, characterized in that: A second through hole is provided in the middle of the second adhesive layer, the size and position of the second through hole respectively correspond to the size and position of the vibration inner hole, and the diameter of the vibration inner hole is smaller than the diameter of the driving inner hole.

5. The composite microporous atomizing sheet according to claim 1, characterized in that: The microporous membrane comprises a membrane outer ring portion and a microporous portion, wherein the microporous portion is located at the center of the membrane outer ring portion, and the diameter of the microporous portion is smaller than the diameter of the vibration inner hole.

6. The composite microporous atomizing sheet according to claim 5, characterized in that: A plurality of liquid inlets are arranged on one side of the microporous portion, and a plurality of mist outlets are arranged on the other side of the microporous portion, and an atomization channel is formed between the liquid inlets and the mist outlets.

7. The composite microporous atomizing sheet according to claim 6, characterized in that: The diameter of the liquid inlet is greater than the diameter of the mist outlet, and the atomization channel gradually narrows from the liquid inlet toward the mist outlet.

8. The composite microporous atomizing sheet according to claim 1, characterized in that: The driving ring is provided with a positive contact and a negative contact.

9. The composite microporous atomizing sheet according to claim 1, characterized in that: The vibration plate and the microporous membrane are both made of metal materials.

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