CN203598991U - Piezoceramic atomizer - Google Patents
Piezoceramic atomizer Download PDFInfo
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- CN203598991U CN203598991U CN201320160971.3U CN201320160971U CN203598991U CN 203598991 U CN203598991 U CN 203598991U CN 201320160971 U CN201320160971 U CN 201320160971U CN 203598991 U CN203598991 U CN 203598991U
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- metallic membrane
- orifice
- atomizer
- region
- raised zones
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Abstract
The utility model discloses a piezoceramic atomizer. The piezoceramic atomizer comprises a metallic membrane and a piezoceramic ring piece which are connected, wherein the surface of the piezoceramic ring piece is covered with a conducting medium layer; a through hole is formed in the center of the piezoceramic ring piece; a group of atomizing holes are formed in an area where the metallic membrane corresponds to the through hole; at least one bulged area is formed in the area of one surface, provided with the atomizing holes and facing the piezoceramic ring piece, of the metallic membrane; and the surface of the first bulged area is in a convex type closed curve. According to the utility model, the metallic membrane used in the piezoceramic atomizer is provided with bulged areas on both surfaces of the microporous area of the metallic membrane, and the bulged volume of a bulged body of the special structure matches with deformation and an amplitude variation relationship of the metallic membrane in operation, so that the deformation and amplitude of each area of the metallic membrane are reasonably and effectively compensated; besides, the fatigue damage of the metallic membrane is reduced, the service life of the atomizer is prolonged, and the deformation and amplitude of the metallic membrane are improved, thereby improving the atomizing effect of the atomizer.
Description
Technical field
The utility model relates to a kind of for liquid being carried out to the atomizer of atomization, the atomizer that particularly a kind of sharp piezoelectric ceramics carries out atomization.
Background technology
Atomizer is usually used in the atomization of humidification in daily life, clinical medicine, and in prior art, atomizer is bondd by the metallic membrane and the piezoelectric ceramic ring that are provided with atomization micropore conventionally.After atomizer powers up, the vibration of piezoelectric ceramic ring radial expansion drives metallic membrane to do flexural vibrations, the flexural vibrations of metallic membrane have changed the shape of tapered orifice, form a relative compression and diastole process, drive the transmission of liquid, and constantly have fine droplet to produce at the miner diameter end of bellmouth, realize the atomization of liquid fluid driving, carrying and liquid.
The normal taper orifice adopting as shown in Figure 1 of atomizer in prior art, described taper orifice angle is θ.Now suppose that liquid is from micropore bigger diameter end d
2flow to miner diameter end d
1time flow resistance coefficient be ξ
1; Liquid is from micropore miner diameter end d
1flow to bigger diameter end d
2time flow resistance coefficient be ξ
2.Fig. 2 is bellmouth flow resistance coefficient ξ
1, ξ
2with the relation curve of tapered micro holes angle theta, from figure, can obtain taper atomization micropore and have an atomization dead band, its angle theta
1scope is roughly (20
0< θ 1<30
0), taper orifice angle is less than dead band angle theta
1time, flow resistance coefficient ξ
1be greater than ξ
2; Micropore angle is greater than atomization dead band angle theta
1time, flow resistance coefficient ξ
1be greater than ξ
2.In the present invention, adopt micropore angle to be greater than atomization dead band angle theta
1taper orifice, i.e. bigger diameter end face d
2for liquid-inlet, bigger diameter end face d
1for atomization ejection face.
Fig. 3 is that the patent No. is 201120400121.7, name is called the atomizing piece cross-sectional view that the Chinese utility model patent of " a kind of metal atomizing piece " discloses, and comprises that metallic membrane 31, piezoelectric ceramic piece 32 are attached to the metal level 34 of easy conductive on piezoelectric ceramics surface.It is characterized in that: described piezoelectric ceramic piece 32 is designed to ring bodies, the bottom area that described metallic membrane 31 is installed on piezoelectric ceramic piece 32 is greater than the area of piezoelectric ceramic piece 32, the thickness of described metallic membrane 31 is 0.02mm～0.06mm, and metallic membrane 31 centers are provided with miniature porose area.The atomizing piece of this structure adopts planar metal diaphragm 31 and piezoelectric ceramic piece 32 to bond, and remains in certain defect in service behaviour.First, the metallic membrane 31 of this structure is under dither (radially or along circumferentially stretching vibration) operating mode, planar metal diaphragm 31 swells and collapse-deformation because the tension and compression of piezoelectric ceramic piece 32 produce, the resistance producing in order to overcome because of metal distortion, the distortion of metallic membrane and amplitude are to have reducing to a certain degree.Second, the deflection in metallic membrane micropore district center region and amplitude amount maximum are the trend of successively decreasing to fringe region, the energy that vibration wave produces can be a large amount of concentrate on central area, cause only a part of micropore of central area normally to be worked, and the micropore of fringe region is in half duty.Liquid by fringe region micropore atomization is owing to can not get sufficient transmitting energy, stagnate and on metallic membrane surface, form drop therefore liquid can not spray at a distance outward, hinder the atomization of follow-up liquid, reduce the actual atomization area of atomizing piece, affect the atomization of atomizing piece.
The floor map that Fig. 4 is that the patent No. is 201110040361.5, name is called the atomizing piece that the Chinese invention patent of " spray holes and use its atomizing component " discloses.The atomizing component of this structure has been invented a kind of novel spray nozzle sheet for the existing defect of prior art.It is characterized in that: spray nozzle sheet one side is provided with multiple protrusions 44 and multiple atomization micropore 45, multiple protrusions 44 are non-circular and protrude out towards the direction protuberance of this piezoelectricity ring plate 42, and form the multi-face structure of the radial or annular arrangement of a particular geometric modelling pattern.Although the spray nozzle sheet of this invention can expand atomization region, reduce the fatigue damage rate of spray nozzle sheet, but spray nozzle sheet adopts and assumes diamond in shape, ellipse, triangle, hourglass type, falcate or heart-shaped protrusion 44, deflection, amplitude variations relation when the unusual and metallic membrane 41 of the dome shape of this kind of structure vibrates are disagreed.Therefore, the region that on metallic membrane 41, deflection is large can not get deformation-compensated fully, the region that deflection is little causes local deformation amount excessive because excessive deformation compensates, the protrusion 44 of this kind of structure does not reasonably carry out deformation-compensated to metallic membrane, further accelerate the fatigue damage of spray nozzle sheet, the service life of reducing atomization.Secondly, the spray nozzle sheet of this structure is only provided with protrusion 44 at metallic membrane 1 one side, therefore only have half work period to obtain the deformation-compensated of protrusion 44 when spray nozzle sheet cyclomorphosis, and half period is deformation-compensated owing to arriving in addition, cause expending more energy and overcome the distortion of metallic membrane, affect the atomization of atomizing piece.
Atomizing piece of the prior art often adopts one side to be provided with metallic membrane and the piezoelectric ceramic ring bonding of protrusion, deflection, amplitude variations relation when the spray nozzle sheet of this structure is provided with the structural form of protrusion and metallic membrane vibration do not match, deformation-compensated skewness.Meanwhile, metallic membrane only one side is provided with protrusion, can not guarantee that the whole distortion cycle of metallic membrane obtains deformation-compensated, needs more energy to participate in the actual atomizing of atomizer.Therefore the atomizer that present stage is used, the very easily fatigue damage of its atomizer, capacity usage ratio atomization low, atomizer are poor.
Summary of the invention
Technical problem
The technical problems to be solved in the utility model is to provide a kind of piezoelectric ceramic atomizer, and this atomizer adopts the metallic membrane of special construction, improves the service life of atomizer, promotes the atomizing effect of atomizer.
Technical scheme
In order to solve above-mentioned technical problem, the piezoelectric ceramic atomizer of a kind of scheme that the utility model provides is made up of the metallic membrane being connected and piezoelectric ceramics ring plate, described piezoelectric ceramics ring plate surface coverage has conducting medium layer, and described to be attached to conductive layer on piezoelectric ceramics surface can be the easy conductive media such as gold, silver, copper; In the middle of described piezoelectric ceramics ring plate, it is through hole, the metallic membrane region corresponding with through hole is provided with one group of orifice, described orifice is bellmouth, described metallic membrane is provided with at least one first raised zones in piezoelectric ceramics ring plate one side is provided with the region of orifice, and the first described raised zones surface is male type closed curve.
Further, described metallic membrane deviates from the region that piezoelectric ceramics ring plate one side is provided with orifice and is provided with at least one second raised zones, and the second described raised zones surface is male type closed curve.
Further, described at least one the first raised zones and at least one second raised zones are central shaft symmetrical structure.
Further, the center circular array that at least one that state the first raised zones and at least one second raised zones are provided with orifice region with metallic membrane distributes.
Further, described orifice is taper orifice.
Usually, the area of described piezoelectric ceramics ring plate inner via hole is greater than metallic membrane and has atomization micropore district area, and in the scope that contains in through hole of atomization micropore district, to be conducive to the ejection of atomized liquid.
Described raised zones surface is profile that male type closed curve makes raised zones and is similar to raindrop, oil droplet, drop and partly cuts open shape, the maximum end of described raised zones bulge quantity is arranged in the region of deflection and amplitude maximum in the region of orifice, bulge quantity smallest end is arranged in the region of deflection and amplitude minimum in the region of orifice, maximum bulge quantity compensates maximum deformation quantity place, and minimum bulge quantity compensates least amount of deformation place.
Described metallic membrane also can adopt the two-sided scheme that is provided with raised zones, when metallic membrane by bellmouth micropore miner diameter end towards bigger diameter end face when distortion protuberance, obtain deformation-compensated to raised zones on bellmouth micropore bigger diameter end face; In the time that metallic membrane is out of shape towards path end face protuberance by bellmouth micropore bigger diameter end, obtain from going out the deformation-compensated of region to bellmouth micropore path end face epirelief.
Further, do not affecting under the structure of atomizer and the condition of service behaviour, the number of the described two-sided raised zones being provided with in micropore district is should be as far as possible many and for being at least more than or equal to 2 natural number, can certainly according to reality and determine.
The utility model also provides the piezoelectric ceramic atomizer of another kind of similar scheme, it is made up of the metallic membrane being connected and piezoelectric ceramics ring plate, described piezoelectric ceramics ring plate surface coverage has conducting medium layer, in the middle of described piezoelectric ceramics ring plate, it is through hole, the metallic membrane region corresponding with through hole is provided with one group of orifice, described orifice is bellmouth, described metallic membrane is provided with at least one first projection unit in piezoelectric ceramics ring plate one side is provided with the region of orifice, one group of raised zones that the first described projection unit is distributed by circular array forms, described raised zones surface is male type closed curve.Described raised zones surface is profile that male type closed curve makes raised zones and is similar to raindrop, oil droplet, drop and partly cuts open shape.
Beneficial effect
Atomizer of the present utility model has adopted the two-sided metallic membrane that is respectively provided with raised zones in micropore district, deflection, amplitude variations relation during due to the bulge quantity of the bossy body of this special construction and metallic membrane work match, therefore the deflection of metallic membrane regional, amplitude obtain rationally effectively compensation.Therefore increase deflection, the amplitude of fringe region micropore, fringe region part micropore is normally worked, increased the actual atomization area of atomizer.Meanwhile, two-sided equally spaced evenly distributed several male type closed curve bossy bodies that replace in micropore district, have guaranteed that the whole vibration period of metallic membrane all can obtain deformation-compensated from bossy body.Input under the prerequisite that gross energy is constant at atomizer, make more energy participate in actual atomizing.In the present invention, atomizer has reduced the fatigue damage of metallic membrane, has improved the service life of atomizer, has promoted deflection and the amplitude of metallic membrane, has strengthened the atomizing effect of atomizer.
Accompanying drawing explanation
Fig. 1 is the atomization micropore cross-sectional view of prior art atomizer;
Fig. 2 is the schematic diagram that is related to of prior art atomizer orifice and micropore angle;
Fig. 3 is the cross-sectional view of a kind of atomizer in prior art;
Fig. 4 is the cross-sectional view of another atomizer in prior art;
Fig. 5 is the piezoelectric ceramic atomizer structural representation of an embodiment of the utility model, the floor map of the male type closed curve bossy body of employing;
Fig. 6 has the generalized section of raised zones optional position;
Fig. 7 is the overall structure schematic diagram of piezoelectric ceramic atomizer of the present utility model;
Fig. 8 is the second embodiment schematic diagram of the utility model piezoelectric ceramic atomizer;
Fig. 9 is the 3rd embodiment schematic diagram of the utility model piezoelectric ceramic atomizer;
Figure 10 is the 4th embodiment schematic diagram of the utility model piezoelectric ceramic atomizer.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Embodiment mono-:
As Fig. 5, shown in Fig. 6 and Fig. 7, the piezoelectric ceramic atomizer of the present embodiment is made up of the metallic membrane 71 being connected and piezoelectric ceramics ring plate 72, described piezoelectric ceramics ring plate 72 surface coverage have conducting medium layer 78, in the middle of described piezoelectric ceramics ring plate 72, it is through hole 77, metallic membrane 71 region corresponding with through hole 77 is provided with one group of orifice, described metallic membrane 71 is provided with the region 77 of orifice towards piezoelectric ceramics ring plate 72 one sides, described micropore district 73 is provided with several to bellmouth micropore 76, in the described region that is provided with orifice 77, be provided with at least one first raised zones 75, the first described raised zones surface is male type closed curve.As shown in Figure 7, the one side that described metallic membrane 71 deviates from piezoelectric ceramics ring plate 72 is provided with in the region of orifice and is provided with at least the second raised zones 74, the second described raised zones surface is male type closed curve, and described micropore district 73 is provided with several to the male type closed curve bossy body 75 of the path end face 731 of bellmouth micropore 76 and is provided with several male type closed curve bossy bodies 74 to the bigger diameter end face 732 of bellmouth micropore 76.The conducting medium of described conducting medium layer 78 can be the easy conductive media such as gold, silver, copper.
As shown in Figure 5, the first described raised zones 75 and the shape of the second raised zones 74 are all the sharp-pointed excessive bossy body 51 that do not have of male type closed curve composition, its surface smoothing fairing, geometry, size are not undergone mutation and about y axial symmetry, can certainly be about the axisymmetric symmetric body of x, profile is similar to raindrop, oil droplet, drop and partly cuts open shape, and the generalized section of its optional position as described in Figure 6.The bulge quantity of described bossy body 51 is by y
1end is to y
2end increases gradually, thickness t and the peak swing A of bossy body 51 largest contours height h and metallic membrane (71)
maxbetween have a following relation:
Wherein, the maximum end of male type closed curve bossy body 51 bulge quantities (y
2end) be arranged in micropore district deflection and amplitude maximum region, bulge quantity smallest end (y
1end) be arranged in micropore district deflection and amplitude Minimum Area, deflection and stress amplitude variation tendency when distribution attitude should be vibrated with atomizer are consistent.
Wherein, the employing of the piezoelectric ceramic atomizer in the present embodiment angle is θ (40
0< θ <50
0) taper orifice 76, bellmouth 76 end diameter d
1for (5um<d1<10um), bellmouth orifice 76 outside diameter d
2for (45um<d
2<70um), micropore district 73 diameter D are (4.0mm<D<6.0mm), on metallic membrane 1, atomization micropore district 73 thickness t are (50um<t<70um), micropore district 73 is provided with 2000～3000 taper orifices 76, the tapered micro holes 76 bigger diameter end gross areas all in micropore district 73 account for 30%～40% of micropore district 73 areas, and wherein metallic membrane 71 adopts the material that the plasticity such as copper, aluminium is good.Certainly, also can need to change according to real atomization the quantity of orifice 76 in the structural parameters of taper orifice 76 and micropore district 73.
Embodiment bis-:
As shown in Figure 8, the atomizer of the present embodiment is made up of piezoelectric ceramics ring plate 82 and metallic membrane 81, wherein atomizer micropore district 83 is provided with six male type closed curve bossy bodies, wherein three male type closed curve bossy bodies 84 are distributed in micropore district 83 to tapered micro holes 86 path end faces, and other three male type closed curve bossy bodies 85 are distributed in micropore district 83 to tapered micro holes 86 bigger diameter end faces.Described micropore district 83 is along the circumferential direction uniformly distributed three male type closed curve bossy bodies 84 to tapered micro holes 86 path end faces, and circumferencial direction rotates to an angle and is along the circumferential direction uniformly distributed three male type closed curve bossy bodies 85 in described micropore district 83 to tapered micro holes 86 bigger diameter end faces.Described male type closed curve bossy body 84 is along the circumferential direction uniformly-spaced alternately evenly distributed with male type closed curve bossy body 85.Also can adopt micropore district 83 to tapered micro holes 86 path end faces and to the male type closed curve bossy body of tapered micro holes 86 two or more quantity of bigger diameter end face interval, equally spacedly replace evenly distributed several male type closed curve bossy bodies.
Embodiment tri-:
As shown in Figure 9, the atomizer of the present embodiment is made up of piezoelectric ceramics ring plate 92 and metallic membrane 91, in atomizer micropore district 93, be provided with four projection units to tapered micro holes 96 path end faces, three bossy bodies 94 that described projection unit is distributed by circular array form, and described bossy body surface is male type closed curve.With the structure similar of implementing two, in corresponding projection unit,, in tapered micro holes 96 bigger diameter end faces, be provided with and three spaced three bossy bodies 95 of bossy body 94 in micropore district 93, each bossy body is also for uniformly-spaced arranging.
Embodiment tetra-:
As shown in figure 10, the atomizer of the present embodiment is made up of piezoelectric ceramics ring plate 102 and metallic membrane 101, it in atomizer micropore district 103, is taper orifice 106, equidistantly arrange three circle male type closed curve bossy bodies 104 in the 103Nei Yan center of circle, atomizer micropore district, first lap comprises six male type closed curve bossy bodies of arranging according to the distribution attitude in the first embodiment; The second circle comprises 12 and along the circumferential direction equidistantly replaces evenly distributed male type closed curve bossy body; The 3rd circle comprises 18 and along the circumferential direction equidistantly replaces evenly distributed male type closed curve bossy body 105.Also can, according to reality, change the number of turns of male type closed curve bossy body and the number of every circle male type closed curve bossy body in atomizer micropore district.
Claims (9)
1. a piezoelectric ceramic atomizer, formed by the metallic membrane being connected and piezoelectric ceramics ring plate, described piezoelectric ceramics ring plate surface coverage has conducting medium layer, in the middle of described piezoelectric ceramics ring plate, it is through hole, the metallic membrane region corresponding with through hole is provided with one group of orifice, it is characterized in that, described metallic membrane is provided with at least one first raised zones in piezoelectric ceramics ring plate one side is provided with the region of orifice, and the first described raised zones surface is male type closed curve.
2. piezoelectric ceramic atomizer as claimed in claim 1, is characterized in that, described at least one the first raised zones is central shaft symmetrical structure.
3. piezoelectric ceramic atomizer as claimed in claim 1, is characterized in that, the center circular array that described at least one the first raised zones is provided with orifice region with metallic membrane distributes.
4. piezoelectric ceramic atomizer as claimed in claim 1, it is characterized in that, the maximum end of described raised zones bulge quantity is arranged in the region of deflection and amplitude maximum in the region of orifice, and bulge quantity smallest end is arranged in the region of deflection and amplitude minimum in the region of orifice.
5. piezoelectric ceramic atomizer as claimed in claim 1, it is characterized in that, described metallic membrane deviates from the region that piezoelectric ceramics ring plate one side is provided with orifice and is provided with at least one second raised zones, and the second described raised zones surface is male type closed curve.
6. piezoelectric ceramic atomizer as claimed in claim 5, is characterized in that, described at least one the second raised zones is central shaft symmetrical structure.
7. the piezoelectric ceramic atomizer of stating as claim 5, is characterized in that, the center circular array that described at least one the second raised zones is provided with orifice region with metallic membrane distributes.
8. piezoelectric ceramic atomizer as claimed in claim 1, is characterized in that, described orifice is taper orifice.
9. a piezoelectric ceramic atomizer, formed by the metallic membrane being connected and piezoelectric ceramics ring plate, described piezoelectric ceramics ring plate surface coverage has conducting medium layer, in the middle of described piezoelectric ceramics ring plate, it is through hole, the metallic membrane region corresponding with through hole is provided with one group of orifice, described orifice is bellmouth, it is characterized in that, described metallic membrane is provided with at least one first projection unit in piezoelectric ceramics ring plate one side is provided with the region of orifice, one group of raised zones that the first described projection unit is distributed by circular array forms, described raised zones surface is male type closed curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320160971.3U CN203598991U (en) | 2013-04-02 | 2013-04-02 | Piezoceramic atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320160971.3U CN203598991U (en) | 2013-04-02 | 2013-04-02 | Piezoceramic atomizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203598991U true CN203598991U (en) | 2014-05-21 |
Family
ID=50711692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320160971.3U Expired - Fee Related CN203598991U (en) | 2013-04-02 | 2013-04-02 | Piezoceramic atomizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203598991U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223389A (en) * | 2013-04-02 | 2013-07-31 | 张建辉 | Piezoceramic ultrasonic atomizer |
| CN106310841A (en) * | 2015-06-17 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Atomization dedusting system and atomization dedusting method |
-
2013
- 2013-04-02 CN CN201320160971.3U patent/CN203598991U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223389A (en) * | 2013-04-02 | 2013-07-31 | 张建辉 | Piezoceramic ultrasonic atomizer |
| CN106310841A (en) * | 2015-06-17 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Atomization dedusting system and atomization dedusting method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20150402 |
|
| EXPY | Termination of patent right or utility model |