• 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:

    公开号:SE0900740A1
    申请号:SE0900740
    申请日:2009-06-01
    公开日:2010-12-02
    发明作者:Lennart Back；Aaron Hill
    申请人:Tetra Laval Holdings & Finance；
    IPC主号:
    专利说明:

    Summary of the Invention In view of the above, it is an object of the present invention to design a bubble eliminator for use in liquid sterilizer lines of VHP decontamination equipment. According to the invention, a bubble eliminator is designed in the form of an enclosure.
    The enclosure has an inlet and an outlet for the liquid sterilant.
    Furthermore, a number of small, hollow tubes are placed in the enclosure. The function of the tubes is to attract air that has been drawn into the sterilant.
    The bubble eliminator is designed for use with hydrogen peroxide at fl fatalities much lower than those used for water units.
    Because hydrogen peroxide is somewhat unstable and can degrade upon exposure to catalyzing surfaces, the bubble eliminator contains materials that do not catalyze hydrogen peroxide. It also has means for expelling the accumulated air bubbles to prevent them from returning to the liquid sterilant.
    Additional objects and advantages of the invention will become apparent to those skilled in the art upon reading the following detailed description.
    Brief Description of the Drawings The invention is described below in an exemplary form with reference to the accompanying drawing.
    Fig. 1 is a sketch of a bubble eliminator for liquid hydrogen peroxide according to the present invention.
    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS A bubble eliminator for liquid hydrogen peroxide of the present invention is intended to be placed in a vaporized hydrogen peroxide line of VHP equipment. The eliminator comprises an enclosure 1, with an inlet 2 and an outlet 3. The inlet 2 receives a fate of liquid sterilant (10) in the form of hydrogen peroxide. The flow of liquid sterilant leaves the enclosure 1 via the outlet 3.
    A perforated plate 4 is placed inside the enclosure 1, which gives an upper space above the perforated plate 4 and a lower space below the perforated plate 4. The inlet 2 and the outlet 3 open into the lower space of the enclosure 1. In the upper space of the enclosure 1, ie. above the perforated plate 4, an external switch 5 is arranged. The liquid sterilant 10 fills the enclosure 1 up to a level above the perforated plate 4. Above the liquid sterilant 10 a gas 11 in the form of air is enclosed.
    The float switch 5 controls a valve 6 which allows expulsion of air (gas 11) in its open position. In the lower space of the enclosure 1 a number of small, hollow pipes 7 are arranged.
    The tubes 7 are enclosed by the walls and lower part of the enclosure 1, as well as by the perforated plate 4.
    The enclosure 1 is made of a material that does not catalyze hydrogen peroxide, such as polycarbonate. The pipes 7 and the perforated plate 4 are also made of a material which does not catalyze hydrogen peroxide, such as polycarbonate.
    In the hydrogen peroxide which enters the enclosure 1 through the inlet 2, lu fi bubbles 8 are entrained. The air bubbles 8 are formed when the slightly unstable hydrogen peroxide is broken down.
    It is advantageous if such air bubbles 8 are removed before the sterilant reaches the evaporator, which is usually arranged in VHP equipment.
    The lu fl bubbles 8 carried by the liquid sterilant attach to the tubes 7 in the lower space. As the air accumulates at each tube, larger bubbles are formed as the smaller bubbles come close together. The larger bubbles work their way up through the tubes 7 and are removed when a sufficient volume has accumulated. Thus, the larger air bubbles 8 will lift towards the upper part of the enclosure 1 and through the perforated plate 8.
    The float switch 5 at the upper space of the enclosure 1 is used to open the valve 6 for expelling accumulated air. The perforated plate 4 prevents the tubes 7 in the lower space from affecting the function of the otter switch 5. When the volume of gas 11 above the liquid / gas interface is sufficient to affect the surface capacity of the fl otter switch 5 fl, the fl otter 5 is lowered and opens the electric switch 9 which discharges (closes) the valve 6.
    In order to achieve the desired effect, that all incoming air bubbles 8 are collected and do not pass out via the outlet 3, the pipes 7 should be dimensioned in a suitable manner.
    By changing the number of tubes 7, the length of the tubes, and / or the inner and outer diameter of the tubes 7, it is possible to regulate the ability to collect the bubbles 8. The length of the tubes and the inner and outer diameters of the tubes 4 should be dimensioned to promote bubble accumulation. According to one embodiment, the dimensions of each tube are as follows: length 18 mm, outer diameter 9.5 mm, and inner diameter 6.2 mm. Furthermore, the enclosure 1 must be sized to ensure that the velocity is slow enough for the bubbles to work against the upper part of the enclosure 1.
    权利要求:
    Claims (10)
    [1]
    Bubble eliminator of a system with liquid sterilant, comprising an enclosure (1) with an inlet (2) and an outlet (3) for a fl fate with liquid sterilant (10), characterized in that a number of small, hollow tubes (7) are arranged in the enclosure (1).
    [2]
    Bubble eliminator according to claim 1, wherein the enclosure (1) has a perforated plate (4) which divides the enclosure (1) into an upper space and a lower space and wherein the holes in the perforated plate (4) are large enough to allow passage. of bubbles (8) formed in the lower part of the enclosure (1).
    [3]
    Bubble eliminator according to claim 2, wherein the tubes (7) are located in the lower space of the enclosure (1), below the perforated plate (4), and wherein the inlet (2) and the outlet (3) are located in the lower space of the enclosure (1). .
    [4]
    Bubble eliminator according to claim 2 or 3, wherein the enclosure (1) is filled with the liquid sterilant (10) up to a level above the perforated plate (4).
    [5]
    Bubble eliminator according to one of Claims 2 to 4, in which an fl-ot switch (5) is arranged in the upper space of the enclosure (1), above the liquid sterilant (10).
    [6]
    Bubble eliminator according to claim 5, wherein the tt otter switch (5) controls a valve (6) for expelling accumulated lu fi.
    [7]
    Bubble eliminator according to claim 6, wherein the tt otter switch (5) controls an electronic switch (9) which controls the valve 6.
    [8]
    Bubble eliminator according to any one of claims 2-7, wherein the enclosure (1), the tubes (7) and the perforated plate (4) are formed of a material which is not catalytic against the liquid sterilant.
    [9]
    Bubble eliminator according to claim 8, wherein the enclosure (1), the tubes (7) and the perforated plate (4) are formed of polycarbonate.
    [10]
    A bubble eliminator according to any preceding claim, wherein the liquid sterilant consists of hydrogen peroxide and water.
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    同族专利:
    公开号 | 公开日
    EP2437794A1|2012-04-11|
    WO2010139406A1|2010-12-09|
    SE533836C2|2011-02-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL8900857A|1989-04-06|1990-11-01|Flamco Bv|DEVICE FOR SEPARATING GAS FROM LIQUID AND DRAINING THE RELEASED GAS.|
    WO1997010037A1|1995-09-11|1997-03-20|Stücklin & Cie Ag|Water treatment device for degassing and/or de-sludging water in pipes|
    US6906296B2|2002-06-12|2005-06-14|Steris Inc.|Electromagnetically responsive heating apparatus for vaporizer|
    DE602007004840D1|2006-05-01|2010-04-01|American Sterilizer Co|HYDROGEN-ATOMIZERS|
    US7700056B2|2006-08-10|2010-04-20|American Sterilizer Company|Modular decontamination system|
    ITMI20071700A1|2007-08-29|2009-02-28|Stel S N C Dell Ing Ermete Riv|UNIDIRECTIONAL GRAVITY VALVE FOR THE AUTOMATIC EXPULSION OF GASEOUS BUBBLES FROM A CIRCULATING LIQUID IN CAPILLARY TUBES|
    法律状态:
    2020-01-28| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE0900740A|SE533836C2|2009-06-01|2009-06-01|Liquid bubble eliminator|SE0900740A| SE533836C2|2009-06-01|2009-06-01|Liquid bubble eliminator|
    EP10721005A| EP2437794A1|2009-06-01|2010-05-21|Liquid bubble eliminator|
    PCT/EP2010/003135| WO2010139406A1|2009-06-01|2010-05-21|Liquid bubble eliminator|
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