Method and device to evaporate active ingredients from a liquid solution

Abstract

The present invention relates to a method and a device to evaporate low volatility active substances or ingredients from a liquid solution contained in a reservoir (2). The device comprises at least one liquid retaining support and dispensing means (14) arranged in a casing (1) at a distance and in a suitable position for dispensing doses of said liquid solution on said support by means of a push-button (6). The device further has a timer adapted to allow the operation of said dispensing means in selected time periods, said time periods being greater than the time necessary for evaporating most of the solvent and active ingredient from the support.

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention relates to a method and a device to evaporate low volatility active substances or ingredients from a liquid solution. The invention is preferably used to evaporate an insecticide substance at low temperature or even at room temperature.[0002]More specifically, the invention includes distributing in the air active ingredients in a controlled manner to control the efficacy of the effect of the active ingredient considering the effective time of evaporation of the liquid, such that the beneficial effects of the active ingredients can be offered to the user as long as possible.[0003]The field of application of the present invention is the industrial sector dedicated to the devices that evaporate volatile products such as perfumes, deodorants, odor and smoke neutralizes, bactericides, insect repellents and air fresheners for interiors in general.BRIEF DESCRIPTION OF RELATED ART[0004]In dispensing volatile substances to perfume o...

AI Technical Summary

Benefits of technology

[0014]The time periods between doses are controlled in the method such that each dose of the liquid solution is dispensed on said support at an instant in time after the evaporation of most of the active ingredient of the previous dose from the support. A dose is thus prevented from being dispensed on the support when the active ingredient retained therein from the previous dose has still not evaporated,

[0018]The invention mainly improves two critical points in the performance of the volatile product: on one hand, it prevents impregnating the porous material with the liquid in the factory, such that the user can use the effects of the in situ transfer of the liquid to the evaporator support, because all the active ingredient dispensed is used since nothing is lost during the product storage time, or even in the manufacture from when the liquid is dispensed until the product is packaged.

Problems solved by technology

However, these aerosol devices may not be completely effective or inexpensive because the effects of the active ingredients are concentrated in the instant in which the spraying starts and then decrease rapidly.

To date, known evaporators incorporating an absorbent element made of porous material containing the volatile substances are disposable devices having the drawback that said element is impregnated in the factory during the process for manufacturing the product, such that the user receives the element impregnated only with the active ingredients because the solvent spontaneously evaporates beforehand, part of the active ingredient possibly having evaporated during the product storage period.

Once most of the active ingredient has evaporated, the device loses its efficiency and must be replaced by a new one.

The great drawback of these devices is that they by no means show the remaining amount of substance to be evaporated and therefore the remaining duration and the time of protection against mosquitoes for the user, in the case of an insecticide diffuser.

However, this type of solution is not reliable, because if the physical properties of the two substances have been adjusted so that they evaporate in the same time period, this will happen only in certain environmental temperature and humidity conditions which will have been considered normal while defining the product.

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