US20100150774A1 - Method and device to evaporate active ingredients from a liquid solution - Google Patents

Method and device to evaporate active ingredients from a liquid solution Download PDF

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Publication number
US20100150774A1
US20100150774A1 US12/526,960 US52696008A US2010150774A1 US 20100150774 A1 US20100150774 A1 US 20100150774A1 US 52696008 A US52696008 A US 52696008A US 2010150774 A1 US2010150774 A1 US 2010150774A1
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Prior art keywords
solvent
active ingredient
liquid solution
support
liquid
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Abandoned
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US12/526,960
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English (en)
Inventor
Fabio Marchetti
Cedric Morhain
Franco Zobele
Stefano Deflorian
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Zobele Holding SpA
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Zobele Holding SpA
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Assigned to ZOBELE HOLDING SPA reassignment ZOBELE HOLDING SPA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEFLORIAN, STEFANO, MARCHETTI, FABIO, MORHAIN, CEDRIC, ZOBELE, FRANCO
Publication of US20100150774A1 publication Critical patent/US20100150774A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/20—Poisoning, narcotising, or burning insects
    • A01M1/2022—Poisoning or narcotising insects by vaporising an insecticide
    • A01M1/2027—Poisoning or narcotising insects by vaporising an insecticide without heating
    • A01M1/2033—Poisoning or narcotising insects by vaporising an insecticide without heating using a fan
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/20—Poisoning, narcotising, or burning insects
    • A01M1/2022—Poisoning or narcotising insects by vaporising an insecticide
    • A01M1/2027—Poisoning or narcotising insects by vaporising an insecticide without heating
    • A01M1/2044—Holders or dispensers for liquid insecticide, e.g. using wicks
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/20—Poisoning, narcotising, or burning insects
    • A01M1/2022—Poisoning or narcotising insects by vaporising an insecticide
    • A01M1/2061—Poisoning or narcotising insects by vaporising an insecticide using a heat source
    • A01M1/2072—Poisoning or narcotising insects by vaporising an insecticide using a heat source combined with a fan
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/20—Poisoning, narcotising, or burning insects
    • A01M1/2022—Poisoning or narcotising insects by vaporising an insecticide
    • A01M1/2061—Poisoning or narcotising insects by vaporising an insecticide using a heat source
    • A01M1/2077—Poisoning or narcotising insects by vaporising an insecticide using a heat source using an electrical resistance as heat source
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
    • A61L9/03—Apparatus therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
    • A61L9/03—Apparatus therefor
    • A61L9/037—Apparatus therefor comprising a wick
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • A61L9/122—Apparatus, e.g. holders, therefor comprising a fan
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • A61L9/127—Apparatus, e.g. holders, therefor comprising a wick
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00—Essential oils; Perfumes

Definitions

  • 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.
  • 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.
  • the present invention solves the technical drawback set forth by means of the inventive subject-matter comprised in the attached independent claims.
  • the method object of the invention is based on the periodic metering of a dose of liquid solution, either by means of impulse activation by the user or by means of an automatic cyclic function in which activation means cause the dispensing of a dose.
  • means are provided which prevent a new dose from being dispensed until most of the solvent of the previous dose has evaporated.
  • 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,
  • a dose of liquid solution can be dispensed by impulse activation by the user at the time when the user considers it necessary to dispense a new dose.
  • a dose of liquid solution can be dispensed automatically, for which purpose there are mechanical means controlled by an electronic circuit which act on the dispensing means after the established time period between doses.
  • the invention consists of a device to evaporate active ingredients from a liquid solution, having a casing with an opening allowing the passage of air, and a reservoir containing said liquid solution.
  • the device comprises at least one liquid retaining support and dispensing means arranged in the casing at a distance and in a suitable position for dispensing doses of said liquid solution on said support.
  • 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.
  • the timer device is programmed to a time period corresponding to the time between the metering of two consecutive doses, said time period being similar to the time necessary for evaporating the solvent and then the active ingredient from the support.
  • 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.
  • the device of the invention can be manufactured in a simple, inexpensive manner in order to form a portable and easy to handle device, with the possibility of being reused with the incorporation of refills of the reservoir of the liquid solution.
  • FIG. 1 shows a representative graph of the duration times of the three phases of the evaporation method of the invention, corresponding to a dispensed dose of liquid solution.
  • the vertical y-axis indicates the amount of evaporated product and the horizontal x-axis corresponds to time.
  • FIG. 2 shows in Figure (a) a perspective view of a preferred embodiment of the device of the invention without the upper half of the casing in order to show the components housed inside and illustrate the connection between the pushbutton and the spray.
  • Figure (b) shows a rear view of the device shown in Figure (a).
  • the method of the invention is based on the discontinuity of the metering, for which the metering can occur by a technique known in the state of the art, for example by means of: dripping, by means of a spray or aerosol, or by means of breaking capsules or microcapsules containing the liquid solution.
  • evaporation means such as a low consumption heater, i.e. a low temperature heater, a fan or a combination of both elements. These evaporation means can work continuously or discontinuously, for example they can be activated at the same time a dose is dispensed.
  • the device can be a known device provided with absorption means for absorbing the liquid by capillarity, such as a wick for example, in which the capillary transport is slow enough to allow the interruption of the feed of the liquid in the evaporation area when the evaporation means are activated, If the amount of evaporated solvent is not substituted by more solvent, the active ingredient present alone in the wick will evaporate.
  • absorption means for absorbing the liquid by capillarity such as a wick for example
  • FIG. 1 shows a three step or phase evaporation cycle.
  • Phase 1 consisting of the metering of an amount of solution, occurs almost instantaneously at instant t 1 .
  • Phase 2 corresponds to a high evaporation rate of the solvent between instants t 1 and t 2 in a short time period, and finally phase 3 consists of a low evaporation rate of the active ingredient between instants t 2 and t 3 .
  • the next dose of liquid solution can only occur after instant t 3 .
  • evaporation processes logically do not occur uniformly on the entire evaporation surface due to the different evaporation conditions, such that it is possible that while certain areas of the evaporation surface are in phase 2 , other areas are in phase 3 .
  • phase 2 has been especially designed so that it is as fast as possible, as until the solvent has evaporated, the activity caused by the active ingredient is very low or nil and therefore the efficiency of the product is virtually nil. It can be considered that phase 2 ends when most of the solvent has evaporated, i.e., when the amount of solvent present in most of the evaporation area is so small that the active ingredient is able to evaporate in an effective manner.
  • phase 3 the active ingredient present in the evaporation area without solvent evaporates, and the amount of this active ingredient decreases until the evaporation rate is not enough to ensure the necessary biological efficiency to kill insects, for example.
  • phase 3 starts with the beginning of the evaporation of the active ingredient in an effective amount and ends when the amount of this ingredient present in the evaporation area is no longer enough to ensure biological efficiency.
  • the invention has means for preventing the premature interruption of phase 2 , for example, in the event that the user, with the intention of increasing the efficiency, activates the device for a second time to dispense another dose of the liquid. In such case, the effect would be opposite to that desired, i.e., the efficiency will be nil. Indeed, if the metering is activated again during the duration of phase 2 , the active ingredient will never be alone and is therefore not able to evaporate. Furthermore, the new phase 2 will be longer than that determined, because more amount of solvent will have to be evaporated, the amount of solvent already existing from the first metering and the amount of solvent provided with the second metering.
  • the invention incorporates means preventing premature metering.
  • these means can be:
  • a high volatility solvent can consist of a solvent or a mixture of solvents selected to obtain a vapor pressure at room temperature that is equal to or greater than 0.08 mmHg.
  • the duration of phase 2 can be reduced by increasing the concentration of active ingredient in the solution, because with less amount of solvent, less time is necessary to evaporate it. It has been found that an optimal composition can be obtained with 5 to 70% w/w of active ingredient and preferably in a range comprised between 20 to 65% w/w.
  • the duration of phase 2 is reduced by increasing the evaporation area for the liquid, which can be obtained for example by means of:
  • the duration of phase 2 is reduced by using a three phase emulsion.
  • said emulsion can be formed by a first solvent A compatible with the active ingredient that is dissolved in it, plus a solvent B in which the active ingredient is not soluble. Both solvents can be mixed together.
  • suitable solvents for solvent A are organic solvents such as isoparaffins, propylene glycol ethers, dearomatized hydrocarbons, naphthenic hydrocarbons and acetone.
  • solvent B are: water, low molecular weight alcohols such as ethanol and methanol.
  • the amount of solvent A is preferably less than 30% w/w.
  • surfactants or surface-active agents can be used, including anionic surfactants, ionic surfactants, amphoteric surfactants and any combination of the above.
  • the duration of phase 2 is reduced by using a solvent in which the active ingredient is not soluble, such that when the active ingredient in solid state is arranged in suspension in the solvent, the solvent and active ingredient separation process is faster.
  • solvents for this function are water, low molecular weight alcohols such as ethanol and methanol and any mixture thereof.
  • Conventional surfactants, for example, can also be used, including anionic surfactants, ionic surfactants, amphoteric surfactants and any combination of the above.
  • phase 2 Despite reducing the duration of phase 2 , this phase will continue to exist even though it is for a short time period, during which virtually nil efficiency is obtained. In the case of practical, high-efficiency demanding applications, the existence of phase 2 would not be acceptable, even if it had a very small duration.
  • the invention provides a device provided with at least two evaporation areas in which the doses of liquid solution are dispensed in a coordinated manner in the two different liquid retaining supports at different instants in time, such that the active ingredient without solvent is always available in at least one of said supports, i.e. the three phase evaporation occurs in an alternating manner.
  • the beginning of the cycle will correspond to the metering of the liquid on a first evaporation surface ⁇ phase 1 ) and the active ingredient will evaporate by itself from a second evaporation surface ⁇ phase 3 ).
  • phase 2 on the first surface will have ended and this evaporation surface will be ready for a new phase 3 .
  • a new cycle will start by metering on the second surface and evaporating from the first surface.
  • FIG. 2 shows a practical embodiment of the invention, consisting of a portable device for diffusing active ingredients coming from a liquid solution.
  • the device is made up of a casing ( 1 ) formed in this case by an upper half and a lower half, which casing is provided with at feast one opening ( 11 ) for the passage of air, and a reservoir ( 2 ) containing said liquid solution comprising a solvent and at least one type of active ingredient.
  • the device comprises at least one liquid retaining support (not shown) which can be manufactured from a material such as: paper, cardboard, cloth, unwoven cloth, ceramic, carbon fiber, or thermoplastic, and can adopt any shape considered to be suitable for fulfilling its functionality.
  • FIG. 1 a shows a support structure ( 12 ) on which the retaining support in the form of fabric or paper, for example, is assembled.
  • the liquid retaining support can be made of a porous material having a liquid absorption capacity of less than 1 g/cm 3 , and preferably 0.1.g/cm 3 .
  • the retaining support can be made of a non-porous material, such as a thermoplastic material for example, with the possibility of being structured, i.e. having a rough surface or a surface provided with any type of raised design such as for example lines or grooves preventing the liquid from falling to the floor when it is metered.
  • the device further has dispensing means, consisting in this embodiment of a conventional spray ( 14 ) assembled on the reservoir ( 2 ), similar to known cologne sprays.
  • the casing ( 1 ) has an opening ( 16 ) from which the reservoir ( 2 ) can be seen from outside, which reservoir can be transparent or translucent such that the user can check the amount of liquid solution remaining in the reservoir, so that the user can perceive when the liquid has run out and substitute the reservoir with a new one.
  • the liquid retaining support housed inside the casing is arranged between the air outlet ( 11 ) and the dispensing means ( 15 ).
  • the device further comprises a fan ( 17 ) arranged in said casing in a suitable position to provide an air stream on said liquid retaining support, for the purpose of accelerating the evaporation of the solvent and/or the active ingredient and propel it towards the outside through the outlet ( 11 ),
  • the fan is formed by a small direct current motor ( 4 ) and an air propelling element ( 3 ), in this case in the form a squirrel cage, assembled on the motor shaft.
  • the device has conventional heating means (not shown) arranged inside the casing in a suitable position to heat the components of the liquid solution retained by the support at a low temperature.
  • the device includes a push-button ( 6 ) assembled in a pivoting manner on a cylindrical shaft ( 18 ) fixed to the casing ( 1 ) such that a part of this push-button ( 6 ) can be accessed from the outside to allow its impulse activation by the user.
  • the push-button ( 6 ) has an arm ( 19 ) sized and located to press against the spray ( 14 ) as can be seen in FIG. 1 a , such that the spray expels a dose on the support when the user presses the push-button ( 6 ) towards the inside of the casing ( 1 ).
  • the device is provided with an electronic circuit ( 5 ) including an electronic timer of a type known by a person skilled in the art.
  • the timer is programmed to a time greater than the time necessary for the evaporation of the solvent and the subsequent evaporation of the active ingredient, which are known beforehand.
  • a swivel arm or rocker ( 7 ) consisting of an arm assembled with the capacity to swivel on a shaft ( 15 ) integral with the casing.
  • the rocker ( 7 ) has a first end ( 8 ) suitably located close to the free end of the arm ( 19 ), such that when the push-button ( 6 ) is pressed towards the inside of the casing, said arm ( 19 ) moves this first end ( 8 ) of the rocker downwards, which rocker swivels such that the second end ( 9 ) thereof moves upwards.
  • the second end ( 9 ) is positioned close to a push-button or switch (not shown) of the electronic circuit ( 5 ), such that when said second end ( 9 ) moves upwards, it presses said pushbutton, which starts the count of the timer.
  • the free end of the arm ( 19 ) is shaped to make contact with the first end ( 8 ) of the rocker ( 7 ), preferably having a wedge shape which causes, when the pushbutton ( 6 ) is pressed, its end fitted inside the casing ( 1 ) to reach the contact surface of the first end ( 8 ) of the rocker ( 7 ), translating the movement of the pushbutton ( 6 ) into a shift in reverse directions of each end ( 8 , 9 ) of said rocker ( 7 ).
  • the actuation of said push-button also starts the operation of the fan ( 17 ) and/or the heating means, as well as a luminous indicator element, such as an LED for example acting as an element indicating to the user when the previous elements are on or off.
  • a luminous indicator element such as an LED for example acting as an element indicating to the user when the previous elements are on or off.
  • the LED remains on during the memorized time for the timer, such that when this time ends, the LED also turns off to indicate to the user that the effect of a dose has ended due to the evaporation of most of the active ingredient, and therefore the user can now start the process again whenever he or she desires by pressing the push-button, activating all the electric components simultaneously as explained below: i) He or she presses the spray to release a single dose of liquid which immediately impregnates the retaining element, ii) He or she activates the electric circuit starting the operation of the fan to project air towards the retaining element in order to favor the evaporation of the liquid absorbed by said retaining element and release the active ingredients into the air through an outlet provided in the casing.
  • the count of the timer of the electric circuit is restarted, this timer being programmed in the factory taking into account the time it takes for the liquid to evaporate completely and for all the concentration of active ingredients comprised in the defined dose to be diffused.
  • signaling means are provided, at the same time that the timer and the fan start working or when both finish, said signaling means are activated (for example, a luminous indicator turns on or an alarm ringing when the operating time of the timer and the fan turns off), notifying the user that if he or she wants the device to continue operating, he or she can restart the entire process again: spraying-evaporating-timing.
  • the process can be automatically started by including actuation means for actuating the push-button in the device itself or by remote control.
  • the device has means blocking the operation of the spray, said means being controlled by the timer, such that when a dose of liquid is dispensed on the support, the count of the timer starts and said blocking means are actuated, preventing the spray from being activated again while the timer is still counting. Since the timer is programmed to a time period that is similar to or greater than the time necessary for evaporating most of the solvent and active ingredient from the support, the user is prevented from dispensing a new dose while there is still active ingredient in the support in a sufficient amount to be effective, because the spray is blocked during this time period.
  • the activation of the spray can be automatic, for which purpose the device has spray actuation means (not shown) causing said activation, which means are also controlled by the timer, such that when the timer finishes its time count, the spray is automatically activated after a pre-established time interval, which can be adjusted by the user, for example,
  • the actuation means for example, the motor ( 4 ) itself could be used to move the pushbutton ( 6 ) in a suitable manner to press the spray ( 14 ).
  • the device is portable and powered by battery ( 13 ).
  • the user can choose between a manual or automatic operation, and within the automatic operation, he or she can select various previously programmed metering time intervals according to his or her tastes or needs.
  • the device is not controlled by the timer and does not reproduce the three evaporation phases, i.e. it simply meters active ingredient, but incorporates all the previously described elements; casing, support, dispenser, push-button, fan and heater.
  • the device can optionally have securing means to be fixed to the body of a person or animal, such as for example a strap, a clip, etc.
US12/526,960 2007-02-13 2008-02-11 Method and device to evaporate active ingredients from a liquid solution Abandoned US20100150774A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ESP200700384 2007-02-13
ES200700384A ES2304868B1 (es) 2007-02-13 2007-02-13 Metodo y dispositivo para la evaporacion de sustancias activas desde una solucion liquida.
PCT/EP2008/051627 WO2008098908A1 (en) 2007-02-13 2008-02-11 Method and device to evaporate active ingredients from a liquid solution

Publications (1)

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US20100150774A1 true US20100150774A1 (en) 2010-06-17

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US12/526,960 Abandoned US20100150774A1 (en) 2007-02-13 2008-02-11 Method and device to evaporate active ingredients from a liquid solution
US14/694,069 Active US9603357B2 (en) 2007-02-13 2015-04-23 Method and device to evaporate active ingredients from a liquid solution

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Application Number Title Priority Date Filing Date
US14/694,069 Active US9603357B2 (en) 2007-02-13 2015-04-23 Method and device to evaporate active ingredients from a liquid solution

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US (2) US20100150774A1 (es)
EP (1) EP2120545B1 (es)
JP (1) JP2010517715A (es)
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AT (1) ATE524065T1 (es)
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US9352064B2 (en) 2014-06-05 2016-05-31 S. C. Johnson & Son, Inc. Wearable chemical dispenser
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US9603357B2 (en) 2017-03-28
PT2120545E (pt) 2011-12-16
ATE524065T1 (de) 2011-09-15
US20150230455A1 (en) 2015-08-20
EP2120545B1 (en) 2011-09-14
ES2304868A1 (es) 2008-10-16
CA2677162A1 (en) 2008-08-21
AU2008214732A1 (en) 2008-08-21
BRPI0806828A2 (pt) 2016-09-27
EP2120545A1 (en) 2009-11-25
CN101631455B (zh) 2011-09-21
WO2008098908A1 (en) 2008-08-21
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HK1134408A1 (en) 2010-04-30
JP2010517715A (ja) 2010-05-27

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