Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Fluid pressure discharge means
Patent
1996-01-30
1998-10-06
Morris, Lesley D.
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Fluid pressure discharge means
2394175, 239463, B05B 904
Patent
active
058165045
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a discharge apparatus, which in particular through manual enclosing is free and optionally, without externally supplied lines, can be carried or operated with one hand. The discharge apparatus is to be suitable for the discharge of one or more media, whereof same can be liquid, gaseous, pulverulent, pasty and/or highly volatile and the like.
2. Description of Related Art
Such discharge apparatuses can e.g., according to DE-OS 4,015,367, have one or more external or internal discharge heads and can be intended for discharging at least one medium in an extremely fine distribution. This is e.g. desired when discharging active inhalation substances, so as to give asthmatics a very rapid amelioration for a minimum dose. Ultrafine distributions of non-gaseous active substances in a gas or air or liquid flow as the carrier flow are also required for many other applications, e.g. if two or more separate active substances are to be very homogeneously mixed and then discharged.
Relatively easily flowable active substances can e.g. be gradually finely distributed over a flow path in one or more atomizing stages by means of atomizer nozzles, centrifugal chambers, impact atomizers, whirl atomizers, etc. and can be broken down stepwise into finer particle sizes, but generally particle or droplet sizes below 10 .mu.m cannot be obtained.
SUMMARY OF THE INVENTION
The object of the invention is to provide a discharge apparatus for media permitting the obviating of disadvantages of known constructions of the aforementioned type and which in particular ensures a very simple breaking down or decomposition of at least one non-pure, gaseous medium into an ultrafine form and/or ultrasmall particle sizes.
In the case of a discharge apparatus comprising one or more discharge heads, e.g. discharge nozzles, which is intended for connection to at least one medium dispenser, this object can be achieved in that means are provided through which at least part of at least one discharge charge provided for a discharging process and formed from one or more media can be made available in one or more medium reservoirs in a spread out distribution and virtually in a rest state and through which then the thus prepared medium can be exposed to a further, again commencing flow, through which the already finely divided medium, as a function of requirements, can be even more finely divided or brought into an even finer form. Fine distribution in the medium receiver is understood to mean a distribution such that the medium, as a result of its physical characteristics, forms the thinnest possible, just still coherent coating, which in the case of a liquid corresponds to a liquid film and in the case of a powder has a thickness corresponding to a maximum of one to ten or twenty times the particle size. Rest state is understood to mean a completely stationary state in the medium receiver or a movement based on a flow energy which is smaller than that necessary in order to convey the medium into the open from the discharge apparatus.
Thus, as a result of its creeping capacity, e.g. a liquid medium at the start or during the further flow can perform a relatively slow spreading movement, which only stops when it is in equilibrium with the cohesive stress with which the liquid film adheres to the corresponding surface of the medium receiver. Therefore the discharge apparatus can operate in a similar manner to a surface gasifier and appropriately there is not a single, through, smooth surface, but instead a spatially distributed surface structure, whose individual micro-surface areas are so distributed and so pass into one another that a medium flowing through the receiver body acts substantially on all sides thereof. Thus, with a minimum space volume there is a maximum surface extension as an adhesive base for the medium to be introduced first.
As a function of the characteristics of the fluid, e.g. the viscosity, or as a function of the desired discharge characteristics, the
REFERENCES:
patent: 2649333 (1953-08-01), Miller
patent: 3384103 (1968-05-01), Lansky
patent: 5110052 (1992-05-01), Graf et al.
patent: 5147087 (1992-09-01), Fuchs
patent: 5295628 (1994-03-01), Zuckschwerdt
Jager-Waldau Reinhold
Zuckschwerdt Friedrich Wilhem
Ing. Erich Pfeiffer GmbH
Morris Lesley D.
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