GB2474681A - Piezo electric nebuliser - Google Patents
Piezo electric nebuliser Download PDFInfo
- Publication number
- GB2474681A GB2474681A GB0918594A GB0918594A GB2474681A GB 2474681 A GB2474681 A GB 2474681A GB 0918594 A GB0918594 A GB 0918594A GB 0918594 A GB0918594 A GB 0918594A GB 2474681 A GB2474681 A GB 2474681A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nebuliser
- liquid
- fluid
- piezo electric
- dispensed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
- B05B17/0646—Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
- A61M11/005—Sprayers or atomisers specially adapted for therapeutic purposes using ultrasonics
Abstract
A nebuliser dispenser device for a fluid and a fluid delivery system, comprises a perforated plate piezo electric nebuliser member 2. The nebuliser member 2 is arranged so that it contacts a volume of liquid 3 which in use is intended to be dispensed. The fluid delivery system does not comprise a wick. The member 2 may contact the liquid 3 at a 45 degree angle to the liquid surface.
Description
PRODUCT
This invention relates to a nebuliser dispenser device.
US 4r30lr093 and US 5,657,926 show vibrating plate atomiz- ers in which a reservoir is held beneath a piezoelectri-ca]Jy driven vibratory atomization plate. A capillary type liquid delivery system, comprising a fabric wick, extends up from within the reservoir to a location under the vi-brating atomization plate to deliver liquid from within the reservoir to the underside of the plate to be atomized thereby.
US 5,518,179 also shows a vibratory type atomizer in which liquid from a fluid source is delivered by a foam capillary material which is lightly compressed against a vibratory perforate membrane. The perforate membrane is shown to be located in a vertical plane; and the foam capillary mate-rial is shown to extend upwardly from the fluid source and to be bent through 9O so that its upper end rests flat against the face of the perforate membrane.
Perforated plate piezo electric nebulisers are prohibi-tively damped when in direct contact with a material used to deliver liquid to the surface of the nebuliser. It has been found that generation of mist or sprays of liquid is greatly improved when the nebuliser is in direct contact with the liquid to be nebulised.
It is an object of the invention to obviate or mitigate the
disadvantages of the prior art.
ccording to a first aspect of the invention there is pro-vided a nebulLiser dispenser device for a fluid and a fluid delivery system, comprising a perforated plate piezo elec-tric nebuliser member, wherein the member is arranged so that it contacts a volume of liquid which in use is in-tended to be dispensed, wherein the fluid delivery system does not comprise a wick.
The dispenser of the invention has been found to be advantages in that by eliminating the wick damping of the nebuliser is vastly reduced. With the reduction in damping the amount of energy available to nebulise the liquid is increased. Additionally other prob-lems connected with damping, such as an operation failure is mitigated.
Generally the device comprises a liquid reservoir. The res-ervoir comprises a liquid container for containing a supply of liquid to be atomized. Generally the nebuliser member is arranged such that that a portion thereof is beneath the surface of the liquid to be dispensed. Preferably the nebuliser member is arranged such that it is positioned no more than about 2mm beneath the surface of the liquid to be dispensed.
Usually the nebuliser member comprises planar member, e.g. a rectilinear member.
Generally the nebuliser member is arranged such that the planar member is at an angle of about 450 from the surface of the material to be dispensed (preferably the 45o angle refers to one or both planes of the nebuliser member) . In this way it has been found that a further reduction in damping of the nebuliser member is observed. Without wish-ing to be limited by theory it is postulated that where only an (angled) portion of the nebuliser member is in the liquid damping caused by contact of the liquid and the nebuliser member is further reduced.
Preferably the volume of liquid in the reservoir is main-tained in operation of the device, e.g. by a pump.
To enable the continuous nebulising of liquid, the fluid level of the reservoir is preferably maintained. This can be done in several ways including mounting the nebuliser member on a float disposed on or near the surface of the reservoir such that the nebulLiser member maintains optimum contact with the liquid. Alternatively and or addition- ally the level of liquid in the reservoir may be main-tained, e.g. by a pump or other re-filling system (e.g. via an air passage that may be opened when the liquid level drops) . The reservoir may be replaceable.
Claims (6)
- CLAIMS1. A nebuliser dispenser device for a fluid and a fluid de-livery system, comprising a perforated plate piezo electric nebuliser member, wherein the member is arranged so that it contacts a volume of liquid which in use is intended to be dispensed, wherein the fluid delivery system does not com-prise a wick.
- 2. A device according to claim 1 wherein the nebuliser mem-ber is arranged such that that it is beneath the surface of the liquid to be dispensed.
- 3. A device according to claim 2 wherein the nebuliser mem-ber is arranged such that it is positioned no more than about 2mm beneath the surface of the liquid to be dis-pensed.
- 4. A device according to any one of the preceding claims wherein the nebuliser member comprises planar member, e.g. a rectilinear member.
- 5. A device according to claim 4, wherein the nebuliser member is arranged such that the planar member is at an an- gle of about 45 from the surface of the material to be dis-pensed.
- 6. A device according to any one of the preceding claims wherein the volume of liquid is maintained in operation of the device, e.g. by a pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0918594A GB2474681A (en) | 2009-10-23 | 2009-10-23 | Piezo electric nebuliser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0918594A GB2474681A (en) | 2009-10-23 | 2009-10-23 | Piezo electric nebuliser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0918594D0 GB0918594D0 (en) | 2009-12-09 |
| GB2474681A true GB2474681A (en) | 2011-04-27 |
Family
ID=41426589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0918594A Withdrawn GB2474681A (en) | 2009-10-23 | 2009-10-23 | Piezo electric nebuliser |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2474681A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297734A (en) * | 1990-10-11 | 1994-03-29 | Toda Koji | Ultrasonic vibrating device |
| US20070169775A1 (en) * | 2006-01-20 | 2007-07-26 | Kai Chih Industrial Co., Ltd. | Mechanism for the draft of a high frequency atomization device |
-
2009
- 2009-10-23 GB GB0918594A patent/GB2474681A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297734A (en) * | 1990-10-11 | 1994-03-29 | Toda Koji | Ultrasonic vibrating device |
| US20070169775A1 (en) * | 2006-01-20 | 2007-07-26 | Kai Chih Industrial Co., Ltd. | Mechanism for the draft of a high frequency atomization device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0918594D0 (en) | 2009-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |