• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Device for surface disinfection by air, of the venturi effect type, comprising a venturi diffuser (1), a reservoir (6) of treatment liquid, a pump (5) capable of transporting the treatment liquid from the reservoir (6) to the diffuser (1), a fan motor (3) capable of producing pressurized air and of transporting it to the diffuser (1), so that the diffuser (1) is able to diffuse a mixture of air and treatment liquid and a weighing means (4) of the reservoir (6) in order to continuously determine the quantity of treatment liquid used.
    公开号:BE1025949B1
    申请号:E20185839
    申请日:2018-11-29
    公开日:2020-01-07
    发明作者:Linage Pierre De；Nicolas Klacynski
    申请人:Airinspace；
    IPC主号:
    专利说明:

    Device for surface disinfection by air
    The present invention relates to the field of disinfection of an environment by air.
    In this field, it is known to nebulize a treatment product, such as a biocidal product, by mixing it with a propellant air, by means of a venturi effect diffuser. This nebulization then allows the diffusion of this treatment liquid into fine droplets in the environment and thus to treat the air and the surfaces thereof.
    It is known for this to use a device, such as that illustrated in FIG. 1, comprising a reservoir 6 of treatment product, a means of transport, comprising for example a pump 5, and a pipeline of this product to a diffuser 1 and a motor-fan 3 capable of compressing and blowing air up to said diffuser 1. The function of the diffuser 1 is to nebulize the treatment liquid, to mix it with the propellant air and to allow the diffusion of the air / product mixture towards the environment to be treated.
    Such a venturi effect diffuser 1 is a substantially revolutionable part. The treatment product arrives in the diffuser 1 via a pipe coming from the tank 6 and pushed by a pump 5. The diffuser 1 also comprises an air inlet receiving air coming from a motor-ventilator 3. So known, such a diffuser 1 makes it possible to create fine droplets of treatment product, to mix them with the propellant air and to diffuse the mixture in an environment.
    In order for the surface disinfection process to be effective, the quantity of treatment product diffused must be precisely controlled. Diffusing too much product leads to overconsumption of treatment product which can lead to premature wear of the treated materials due to too high concentrations of treatment product. Conversely, under-consumption of treatment product can have a negative impact on the effectiveness of disinfection due to disinfection.
    BE2018 / 5839 insufficient surfaces. In addition, this under-consumption can be associated with an insufficient flow rate which will have resulted in an inappropriate diffusion of the product with, potentially, surfaces which have not been in contact with any treatment liquid.
    A flow meter is too expensive for the intended application, in particular because of the difficulties linked to biocompatibility with the treatment product, most often very oxidizing.
    Also, existing disinfection devices do not directly measure the quantity of treatment product, but measure the diffusion time by considering an estimated flow, most often theoretical. However, it appears that the actual flow rate varies considerably in that it depends on many variable conditions during use. Thus during a diffusion by venturi effect the flow rate depends on the height of the column of treatment product and thus on the filling rate of the reservoir. A peristaltic pump is conventionally used to transport the treatment liquid. The wear of such a pump, of its rollers or of its hoses, still leads to a variation of the flow over time. It follows that the actual flow rate may vary from one to four times detrimentally, thereby having a considerable impact on the estimation of the quantity of nebulized product and therefore the effectiveness of the disinfection.
    The present invention overcomes these various drawbacks and proposes adding to the disinfection device a means of weighing the reservoir.
    The device according to the invention thus advantageously makes it possible to continuously determine the quantity of treatment liquid remaining or, which is equivalent, the quantity of treatment liquid used.
    Thus the subject of the invention is a device for surface disinfection by air, of the venturi effect type, comprising a venturi effect diffuser, a reservoir of treatment liquid, a pump capable of transporting the treatment liquid from the reservoir to '' at the diffuser, a motor-fan capable of producing pressurized air and transporting it to the diffuser, so that the diffuser is able to
    BE2018 / 5839 distribute a mixture of air and treatment liquid, and a means of weighing the reservoir in order to continuously determine the quantity of treatment liquid used.
    The device according to the invention is coupled to an electrical supply which can take the form of either a connection to the electrical supply sector, or a battery. In the case of a power supply by means of a connection to the power supply sector, it is possible to add a transformer, which makes it possible to adapt the current voltage to the needs of the device according to the invention.
    The venturi effect diffuser typically takes the form of a nebulization head or a nozzle, at the level of which the treatment liquid aspirated by the Venturi effect is nebulized into fine particles.
    The treatment liquid is typically a liquid comprising, in solution, a sanitizing agent chosen from biocidal and phytosanitary agents. For example, hydrogen peroxide is commonly used as a biocidal agent.
    The reservoir for this treatment liquid can take many forms. Now, and at its simplest, this reservoir will take the form of the container in which the treatment liquid is delivered, namely, and by way of example, a can of one, two, five or ten liters.
    According to another characteristic, the weighing means comprises a pressure sensor with strain gauges, which sensor is able to determine the weight of the reservoir as a function of the pressure exerted by the latter on the pressure sensor.
    According to another characteristic, the device also comprises a treatment unit capable of adjusting the operating time of the device as a function of an amount of treatment liquid to be diffused. This treatment unit, as soon as it identifies that the quantity of treatment liquid to be diffused has been reached, cuts off the power supply to the pump and, possibly, that of the motor-fan also.
    This processing unit, as soon as it identifies that the quantity of
    BE2018 / 5839 spraying liquid has been reached, cuts off the power to the pump and, possibly, also to the motor-fan.
    According to another preferred characteristic, the treatment unit is also able to adjust the flow rate of the pump as a function of the quantity of treatment liquid to be continuously diffused. In this way, the processing unit makes it possible to ensure both the qualitative and quantitative aspects of the diffusion so as to obtain optimal disinfection.
    This treatment unit, as soon as it identifies that the quantity of treatment liquid to be diffused continuously is unsuitable, adjusts the operation of the pump so as to increase or decrease the flow rate of treatment liquid.
    The qualitative operation of the device according to the invention is thus ensured continuously.
    According to another characteristic, the processing unit is also able to process the measurement signal coming from the weighing means, by means of linear regression.
    According to another characteristic, linear regression uses the equation of the line: y = [% -moy (x)] + avg (y).
    var (x)
    The invention also relates to a surface disinfection process by air using such a device.
    The invention finally relates to the use of such a device for surface disinfection by air.
    Other characteristics, details and advantages of the invention will emerge more clearly from the detailed description given below by way of indication in relation to the drawings in which:
    - Figures 1 and 2 show an embodiment of the invention in perspective view, respectively front view and rear view,
    - Figure 3 shows a mass / time diagram of the treatment liquid.
    Figures 1 and 2 illustrate a surface disinfection device by
    BE2018 / 5839 airway, of the venturi type. The device shown comprises doubled elements in order to increase the processing capacity. The invention works with at least one element. A device according to the invention comprises a diffuser 1 with a venturi effect allowing the diffusion of a mixture comprising a treatment liquid and propellant air. The treatment liquid is stored in a tank 6 and typically consists of a biocide. A pump 5, such as a membrane peristaltic pump, makes it possible, via pipes, to transport the treatment liquid from the tank 6 to the diffuser 1. A motor fan 3 makes it possible to produce pressurized air. This air is transported to the diffuser 1. By its conformation adapted to the venturi effect, the diffuser 1 is able to vaporize the treatment liquid in fine droplets and to mix them with the propellant air. The propellant air thus charged with droplets of treatment liquid allows a diffusion of the treatment liquid into the room to be treated / disinfected.
    According to a characteristic of the invention, the device also comprises a weighing means 4. This weighing means is placed near the tank 6 in order to continuously determine the weight / mass of the tank 6. Knowing the tare: the mass of the tank 6, it can be deduced the quantity of treatment liquid present in the tank 6. By differential measurement with an initial weighing, the quantity of treatment liquid used can be determined.
    In order to produce a simple, robust and low-cost weighing means 4, the weighing means 4 may comprise a pressure sensor with strain gauges. Such a sensor comprises an elastically deformable means, on which is disposed at least one strain gauge able to measure a stress indicative of the reversible deformation. A calibration makes it possible to determine a mass / deformation characteristic, making it possible to determine a mass according to an observed deformation.
    The disinfection device also advantageously comprises a
    BE2018 / 5839 processing unit 7. This processing unit 7 is capable of controlling all or part of the actuators: motor-fan 3, pump 5 and acquiring measurements of all or part of the sensors: air pressure, time, measurement weight from weighing means 4.
    The processing unit 7 is thus able to control the disinfection device. It can thus be configured so as to adjust the operating time of the disinfection device as a function of an amount of treatment liquid to be diffused. Thus it is possible, for a room of a given volume, to define a quantity of treatment liquid to be diffused. When this quantity is effectively diffused, as indicated by the quantity remaining in the tank 6 measured by the weighing means 4, the processing unit 7 can then stop the operation.
    The processing unit 7 can also be configured so as to adjust the flow of treatment liquid to be broadcast continuously. Thus, it is possible to continuously ensure the sterilization performance so as to obtain, continuously, a determined quantity of sterilization liquid per unit of area.
    This makes it possible to guarantee a precise concentration of biocidal product in the disinfected volume and, in fact, to ensure that it is in conditions similar to those which have led to the validation of laboratory performance.
    Due to the dynamics, erroneous weight measurements may appear randomly. As illustrated in FIG. 3, the curve of the mass measurements, on the ordinate, as a function of time, on the abscissa, is substantially decreasing linear. Also, according to another advantageous characteristic, the invention uses a linear regression. Such a linear regression consists in determining a straight line passing as close as possible, typically according to the least squares, of the different measurements (x, y), where y is the measured mass and x represents time. A measurement (x, y) positioned too far from the regression line is then rejected.
    According to one embodiment, the regression line is determined, in
    BE2018 / 5839 based on the measurements already made, using the following formula:
    y = - moy (x)] + moy (y), with y the ordinate, x the abscissa, moy the var (x) average function, var the variance function, and cov the covariance function.
    The statistical functions, moy, var and cov, are iteratively applied 5 to all of the measurements already made since the start of the current broadcast session.
    Thus, it emerges from the above description that the weighing of the reservoir 6 makes it possible to determine in real time the quantity of treatment liquid diffused. This weighing makes it possible to determine, by difference, the total amount ίο of treatment liquid dispensed during a session and, thus, to automatically interrupt the session when it has ended. This weighing also makes it possible to verify during a session that the flow of treatment liquid diffused is substantially constant over time, in order to guarantee uniformity of the diffusion.
    The invention also relates to a surface disinfection process by air using such a disinfection device.
    Finally, the invention relates to a use for surface disinfection by air using such a disinfection device.
    权利要求:
    Claims (9)
    [1]
    1. A device for disinfecting surfaces by air, of the venturi effect type, comprising a venturi diffuser (1), a reservoir (6) of treatment liquid in liquid form, a pump (5) capable of transporting the treatment liquid from the reservoir (6) to the diffuser (1) and a motor-fan (3) capable of producing pressurized air and of transporting it to the diffuser (1), so that the diffuser (1) either able to diffuse a mixture of air and treatment liquid, characterized in that it further comprises a weighing means (4) of the reservoir (6) in order to continuously determine the quantity of treatment liquid used.
    [2]
    2. The device according to claim 1, which is coupled to an electrical supply which can take the form of either a connection to the electrical supply sector, or a battery.
    [3]
    3. The device according to any one of claims 1 or 2, wherein the weighing means (4) comprises a strain gauge sensor.
    [4]
    4. The device according to any one of claims 1 to 3, which further comprises a treatment unit (7) capable of adjusting the operating time of the device according to an amount of treatment liquid to be diffused.
    [5]
    5. The device according to claim 4, wherein said treatment unit (7) is also able to adjust the flow rate of the pump (5) as a function of the quantity of treatment liquid to be continuously diffused.
    [6]
    6. The device according to claim 4, wherein the processing unit (7) is also able to process the measurement signal coming from the weighing means (4), by means of a linear regression.
    [7]
    7. The device according to claim 6, where the linear regression uses the equation of the line: y = ΞΞϊίΞιΜ [% - avg (x)] + avg (y).
    var (x)
    [8]
    8. A method of surface disinfection by air characterized in that it uses a device according to any one of
    BE2018 / 5839 claims 1 to 7.
    [9]
    9. Use for the disinfection of surfaces by air, of a device according to any one of claims 1 to 7.
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR2547412A1|1984-12-14|Simplified pressurised-fluid dose mixing system, especially for haemodialysis devices
    FR2907773A1|2008-05-02|Diesel vehicle detecting method for use when vehicle is present near petrol pump nozzle, involves stopping ethanol based biofuel distribution system equipped with petrol pump nozzle if nature of aspired vapor corresponds to that of air
    同族专利:
    公开号 | 公开日
    FR3074049B1|2019-11-15|
    FR3074049A1|2019-05-31|
    DE202018005524U1|2019-05-24|
    BE1025949A1|2019-08-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0486623B1|1989-10-11|1997-01-08|American Sterilizer Company|Recirculation, vapor and humidity control in a sealable enclosure|
    FR2781678A1|1998-07-28|2000-02-04|Pierre Lagorgette|Sprayer for liquid product such as disinfectant has diffuser mounted axially in air flow produced by turbine in recessed end of compression chamber|
    GB2395904A|2002-12-03|2004-06-09|Bosch Gmbh Robert|Apparatus for volatilising a decontamination agent|
    EP2425714A2|2010-09-07|2012-03-07|Exel Industries|Device and method for distributing a liquid product to be sprayed onto a surface|
    WO2015121390A1|2014-02-12|2015-08-20|Presensia|Device and method for diffusing a dry mist|
    法律状态:
    2020-02-05| FG| Patent granted|Effective date: 20200107 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1771280A|FR3074049B1|2017-11-29|2017-11-29|DEVICE FOR SURFACE DISINFECTION BY AIR|
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