CN213762577U - A kind of atomizing sheet with double-sided stepped aperture distribution - Google Patents

Abstract

The invention relates to an atomizing sheet with double-sided stepped pore size distribution, which comprises a first metal membrane and a second metal membrane which are coaxially and oppositely arranged, wherein an annular piezoelectric ceramic sheet is clamped between the first metal membrane and the second metal membrane and forms a liquid storage cavity together with the first metal membrane and the second metal membrane; on first metal diaphragm and the second metal diaphragm, the surface that is located the liquid storage chamber region is provided with the spraying region, and the spraying region comprises a plurality of toper little atomizing hole, and the regional center orientation in liquid storage chamber is followed in the play fog end aperture of toper little atomizing hole annular piezoceramics direction is cascaded increase. The setting of this scheme has offset the inconsistent error in each taper hole fog-out terminal surface aperture that metal diaphragm bending deformation caused for the particle diameter of fog is fine and smooth even among the atomizing process, and the atomizing efficiency of atomizer has effectively been excavated to the regional two-sided intermediate layer formula design of spraying simultaneously, realizes high-efficient high-quality atomization effect.

Description

Atomizing sheet with double-sided stepped pore size distribution

Technical Field

The utility model relates to an atomizing technical field, concretely relates to atomizing piece that two-sided cascaded aperture distributes.

Background

With the rapid development of science and technology, the atomization technology is applied to various aspects of life, such as household atomization humidifiers, landscape-art scene atomization, beauty atomization, industrial dust removal atomization, medical treatment atomization, aromatherapy atomization and other fields.

Most of the existing atomization devices adopt ultrasonic piezoelectric ceramic atomization pieces which are formed by bonding an annular piezoelectric ceramic piece and a substrate circular metal diaphragm, the piezoelectric ceramic ring piece generates radial or axial sinusoidal resonance to drive the stainless steel metal diaphragm to vibrate under the action of alternating current, and the liquid is atomized by the micro-pump effect of the diaphragm. However, various piezoelectric ultrasonic atomizers used at the present stage have the problems of low atomization efficiency, uneven atomized particle size, poor atomization effect and the like in the atomization process. For example, in industrial dust removal, the dust removal nozzle can only spray mist on a single surface, the potential dust removal capability cannot be fully exerted, and meanwhile, the particle sizes of liquid drops after atomization are different, so that the actual atomization dust removal capability is greatly reduced due to the fact that the adsorption capability of the liquid drops is different.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists among the prior art, the utility model discloses a first order provides an atomizing piece of two-sided cascaded aperture distribution, its end aperture of fog that goes out through setting up the little atomizing hole of taper in two-sided metal diaphragm and the metal diaphragm is along the cascaded increase of liquid storage chamber regional center towards annular piezoceramics direction, has solved because metal diaphragm bending deformation causes the inhomogeneous problem of the particle diameter of fog, and on the other hand adopts the utility model discloses atomizing piece of two-sided cascaded aperture distribution can the latent atomization efficiency of full play, realizes high-efficient high-quality atomization effect. Based on the above-mentioned purpose, the utility model discloses at least, provide following technical scheme:

the atomizing sheet comprises a metal membrane and an annular piezoelectric ceramic sheet, wherein the metal membrane comprises a first metal membrane and a second metal membrane, the first metal membrane and the second metal membrane are coaxially and oppositely arranged, and the annular piezoelectric ceramic sheet is clamped between the first metal membrane and the second metal membrane and forms a liquid storage cavity together with the first metal membrane and the second metal membrane;

wherein, first metal diaphragm with on the second metal diaphragm, be located the regional surface in liquid storage chamber is provided with the spraying region, the spraying region comprises a plurality of taper little atomizing hole, the little atomizing hole of taper goes out the aperture of fog end aperture and is less than the aperture of liquid storage terminal surface, the play fog end aperture of taper little atomizing hole is followed the regional center orientation in liquid storage chamber annular piezoceramics direction is cascaded increase.

Furthermore, the spraying area is a circular area, and the diameter of the circular area is slightly smaller than the diameter of an inner ring hole of the annular piezoelectric ceramic piece.

Furthermore, the cone-shaped atomizing hole is a circular table type cone-shaped hole, an arc-shaped cone-shaped hole, a layered Y-shaped cone-shaped hole or a circular table-arc layered composite Y-shaped cone-shaped hole.

Furthermore, a liquid inlet hole is formed in the side wall of the annular piezoelectric ceramic piece, and a thin-wall liquid inlet pipe is arranged in the liquid inlet hole.

Furthermore, a bonding area is arranged between the metal diaphragm and the annular piezoelectric ceramic piece, and a conductive coating is arranged in the bonding area.

Further, the edge areas of the first metal membrane and the second metal membrane are provided with electrode welding spot areas.

The utility model discloses following beneficial effect has at least:

the utility model provides an atomizing piece that two-sided cascaded aperture distributes, its through setting up the scheme of the cascaded increase of stock solution chamber regional center orientation annular piezoceramics direction in the play fog end aperture of the little atomizing hole of taper in two-sided metal diaphragm and the metal diaphragm, each taper hole that has offset the metal diaphragm bending deformation and has caused goes out the inconsistent error in fog terminal surface aperture, make the particle diameter of fog in the atomizing process fine and smooth even, the atomizing efficiency of atomizer has effectively been excavated to the regional two-sided intermediate layer formula design of spraying simultaneously, realize high-efficient high-quality atomization effect.

Drawings

Fig. 1 is a schematic view of a usage status of an embodiment of the present invention.

Fig. 2 is a schematic sectional structure view of the atomizing plate of the present invention.

Fig. 3 is a schematic sectional view of the micro atomization hole of the present invention.

Fig. 4 is a schematic cross-sectional view of a conventional metal diaphragm.

Fig. 5 is a schematic view of the sectional structure of the metal diaphragm of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, other embodiments obtained by a person of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

The present invention will be described in further detail below. As shown in fig. 1-2, this embodiment provides a two-sided stepped pore size distribution atomizing sheet, which comprises a metal diaphragm 1 and a ring-shaped piezoelectric ceramic 2,

the metal diaphragm 1 is preferably made of stainless steel materials and comprises a first metal diaphragm and a second metal diaphragm, as shown in fig. 2, the first metal diaphragm and the second metal diaphragm are coaxially and oppositely arranged, the annular piezoelectricceramic piece 2 is clamped between the first metal diaphragm and the second metal diaphragm, a bonding area is arranged between the metal diaphragm 1 and the annular piezoelectricceramic piece 2, a conductive coating 4 is arranged in the bonding area, the metal diaphragm 1 and the annular piezoelectricceramic piece 2 are bonded by arranging a conductive bonding agent in the bonding area, and a liquid storage cavity 3 is formed between the metal diaphragm 1 and the annular piezoelectricceramic piece 2. Electrode welding spot regions 5 are arranged at the edges of the first metal membrane and the second metal membrane, and an external circuit applies specified alternating voltage signal excitation to two ends of the electrode welding spot regions 5 to realize radial telescopic vibration of the annular piezoelectricceramic piece 2 so as to drive the metal membrane 1 to vibrate at the same frequency. The lateral wall ofannular piezoceramics piece 2 is seted up the feed liquor hole of certain size specification, is provided with thin wallfeed liquor pipe 6 in this feed liquor hole, and liquid gets into stock solution chamber 3 alongfeed liquor pipe 6 and realizes waiting that the atomizing liquid supplements in real time to stock solution chamber 3 in order to guarantee the continuity of atomization process.

The surface of the metal membrane 1 in the area of the liquid storage cavity is provided with aspraying area 7. In a preferred embodiment, thespray area 7 is circular. The diameter of the circular area is slightly smaller than the diameter of the inner ring hole of the annular piezoelectricceramic piece 2. Thespray zone 7 consists of several conical micro-atomization holes. Specifically, a plurality of conical holes can be formed in the spraying area by adopting a laser process. The size of the fog drops generated when the metal diaphragm vibrates is related to the aperture of the fog outlet end of the metal diaphragm, and the smaller the aperture of the fog outlet end is, the smaller the size of the generated fog drops is. In this embodiment, as shown in fig. 5, the end with the smaller aperture of the tapered micro-atomization hole is an atomizing end 8, and the other end, i.e. the end with the larger aperture, is disposed on the side of the liquid storage end 9 on the metal membrane. As shown in fig. 5, when liquid enters the liquid storage cavity region along theliquid inlet pipe 6, the metal diaphragm 1 is driven by the radial stretching vibration of the piezoelectric ceramic plate to vibrate at the same frequency, so that the liquid in the liquid storage cavity generates fog drops, and the fog drops enter along the liquid storage end face of the tapered micro-atomization hole of thespray region 7 and are sprayed out from the fog outlet end of the liquid storage cavity.

The cross section of the conical micro-atomization hole is conical as a whole, and as shown in fig. 3, the aperture of the mist outlet end of the conical micro-atomization hole is smaller than that of the liquid storage end face. The hole wall can present different shapes, such as the figure, the cone-shaped micro atomization hole can be (a) the round table-shaped hole, (b) the arc-shaped cone-shaped hole, (c) the layered Y-shaped cone-shaped hole of the figure, or (d) the round table-arc layered composite Y-shaped cone-shaped hole of the figure. To facilitate the flow of the liquid. In one embodiment, the tapered micro-atomization holes are preferably truncated cone-shaped holes. Further, as shown in fig. 5, the aperture of the mist outlet end of the tapered micro-atomizing hole is set to increase in a stepwise manner along the center of the liquid storage cavity area towards the direction of the annular piezoelectric ceramic. The specific pore diameter is not strictly linear, and may depend on the actual deformation of the metal diaphragm 1. Optionally, the sizes of the apertures of the liquid storage end faces are uniform.

When the radial telescopic vibration of the annular piezoelectricceramic piece 2 drives the metal diaphragm 1 to vibrate at the same frequency, the stress conditions of the liquid storage end face and the mist outlet end of the metal diaphragm 1 are inconsistent, and further the metal diaphragm 1 is bent and deformed, as shown in fig. 4-5, when the annular piezoelectricceramic piece 2 contracts radially under the action of external excitation voltage, the metal diaphragm 1 is bent towards the liquid storage end face, the mist outlet end of the conical micro-atomization hole is pulled, the liquid storage end face of the conical micro-atomization hole is pressed, the bending deformation of the metal diaphragm 1 is continuously reduced from the central area to the edge area, and the bending deformation of the central area is the most serious. Therefore, as shown in FIG. 4, the diagram (a) is a diagram before deformation of the microplate and the diagram (b) is a diagram showing a state after denaturation of the microplate. If the piezoelectric ceramic atomizing sheet adopts the traditional uniform taper hole aperture distribution, the deformation of the central region of the atomizing is the largest, the deformation of the edge region is the smallest, the aperture areas of the deformed taper holes on the atomizing end surfaces are not consistent, the aperture is gradually reduced from the center to the edge, the droplet particle diameter generated in the central atomizing region is the largest, the atomizing particle diameter in the edge region is the smallest, the atomizing particle diameters are different, and the atomizing effect is poor. The utility model provides a pore diameter distribution is shown in fig. 5, (a) the picture be before the metal diaphragm warp, the play fog end aperture in the little atomizing hole of taper is cascaded increase towards annular piezoceramics direction along the regional center in stock solution chamber. (b) After the graph is the metal diaphragm degeneration, when the metal diaphragm was crooked towards the stock solution terminal surface, the aperture of the regional end that fog goes out of metal diaphragm center was drawn the grow, the aperture tensile degree of the regional end that fog goes out of edge is less, its deformation is less, the condition that the regional aperture of center is obviously greater than the edge area has been alleviated to a certain extent, better offset because the crooked error that differs of each taper hole deformation back on fog end face 8 that warp of metal diaphragm, make the area on fog end face 8 after each taper hole deformation tend to unanimously, the even exquisiteness of play fog particle diameter this moment, better reach the atomizing effect of homogeneity.

The utility model discloses a regional bending deformation effect at spraying in-process metal diaphragm of spraying of having fully considered current ultrasonic atomization piece, the error that each taper hole goes out fog end aperture differs that metal diaphragm bending deformation effect caused has been offset to the scheme that has adopted the little atomizing hole of taper to be cascaded increase along the regional center of stock solution chamber towards annular piezoceramics direction, the fine and smooth even effect of particle diameter after having reached the atomizing, the atomizing latent energy of current atomizer has effectively been excavated to the regional two-sided intermediate layer formula design of spraying simultaneously, atomization efficiency has been improved effectively.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (6)

1. The atomizing sheet with the double-sided stepped pore size distribution comprises a metal membrane and an annular piezoelectric ceramic sheet, and is characterized in that the metal membrane comprises a first metal membrane and a second metal membrane, the first metal membrane and the second metal membrane are coaxially and oppositely arranged, and the annular piezoelectric ceramic sheet is clamped between the first metal membrane and the second metal membrane and forms a liquid storage cavity together with the first metal membrane and the second metal membrane;

wherein, first metal diaphragm with on the second metal diaphragm, be located the regional surface in liquid storage chamber is provided with the spraying region, the spraying region comprises a plurality of taper little atomizing hole, the little atomizing hole of taper goes out the aperture of fog end aperture and is less than the aperture of liquid storage terminal surface, the play fog end aperture of taper little atomizing hole is followed the regional center orientation in liquid storage chamber annular piezoceramics direction is cascaded increase.

2. The atomizing plate of claim 1, wherein the spray area is a circular area having a diameter smaller than the diameter of the inner annular hole of the annular piezoceramic plate.

3. The atomizing sheet according to claim 1 or 2, wherein the conical atomizing holes are selected from a truncated cone-shaped hole, an arc-shaped conical hole, a layered Y-shaped conical hole or a truncated cone-arc layered composite Y-shaped conical hole.

4. The atomizing plate according to claim 1 or 2, wherein the side wall of the annular piezoelectric ceramic plate is provided with a liquid inlet hole, and a thin-wall liquid inlet pipe is arranged in the liquid inlet hole.

5. An atomizing plate according to claim 1 or 2, characterized in that a bonding region is provided between the metal diaphragm and the annular piezoceramics plate, and the bonding region is provided with a conductive coating.

6. An atomizing plate according to claim 1 or 2, characterized in that the edge regions of the first metal membrane and the second metal membrane are provided with electrode pad regions.

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