• 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:
    ABSTRACT The present invention relates to a system (10) for weed control of a surface,comprising a water container (12) and a container (14) for biodegradable foamextract (14d), which containers (12, 14) are connected by means of first (12a) and 5 second (14a) conduits, respectively, to a heater (16) for heating a mixture (20) ofwater and foam extract, which heater (16) is connected to a first pump (18) andfurther to at least a nozzle (19) adapted to distribute the mixture of water and foamextract on the surface. 10 Fig.1
    公开号:SE1351020A1
    申请号:SE1351020
    申请日:2013-09-03
    公开日:2015-03-04
    发明作者:Ivan Pedersen
    申请人:Ncc Roads Holding Ab；
    IPC主号:
    专利说明:

    SYSTEM FOR WEED CONTROL TECHNICAL FIELD The disclosure relates to weed control. More particularly, the disclosure relates toa system for weed control and use of such a system.
    BACKGROUND Weed control is sometimes required. Traditionally, weed control methods includedmechanical measures, but evolved to also or almost only include use of pesticidesinstead of mechanical measures. Due to environmental concerns, the use ofpesticides is becoming more and more questioned, because all, or at least someof the pesticides are hazardous also to the environment, for instance soil or usefulplants, often both during treatment but also long time following treatment. ln worst case, the environment may even be poisoned for a long time.
    Because of that, pesticides are becoming more and more questioned for weedcontrol and have to some extent even become forbidden to be used for weedcontrol. lnstead, other methods for weed control such as heat treatment includingburning, typically using an open flame, of weed are used nowadays. But also heattreatment methods such as burning, for instance with propane burners, orsteaming, suffer from disadvantages such as being expensive because of highfuel prices and also hazardous to the environment due to exhaust gases from thefuel used. Also problems with undesired fire of surroundings may arise because of the very hot heating treatment method using an open flame.
    SUMMARY lt is therefore an object to address some of the problems outlined above, and toprovide a solution for weed control providing weed control without any need ofpesticides or open flames. This object and others are achieved by the system forweed control according to the independent claims, and by the embodimentsaccording to the dependent claims. ln accordance with a first embodiment, a system for weed control of a surface isprovided. The system comprises a water container and a container forbiodegradable foam extract. The containers are connected by means of first andsecond conduits, respectively, to a heater for heating a mixture of water and foamextract. The heater is connected to a pump and further to at least a nozzleadapted to distribute the mixture of water and foam extract on the surface.
    According to an aspect of the present invention in accordance with the firstembodiment, but also to other embodiments as follows below, a principle oftreatment is distribution of a hot, typically 95 to 98 degrees Celsius, watercombined with simultaneously distribution of biodegradable organic foam on thesurface. Typically, the foam disappears in a few minutes following distribution ofthe mixture of water and foam on the surface. ln addition to the first embodiment, the second conduit comprises a pre-heater anda second pump. Typically, the pre-heater is adapted to control a viscosity of the foam extract, and the pump is a dosage pump adapted for dosage of foam extract.Typically, the pre-heater, and the pumps are adapted to be controlled by means of a user interface such as a computer controlled monitor and control software for 3 operation thereof and interaction with a user. ln this way, a precise control of temperature, pressure and amount of mixture isprovided. This provides an optimized effect of weed control of the distributed mixture.
    By means of the invention, according to all embodiments, a fast result is achievedsince the heat causes cell-walls in the weeds to blow and the evaporation from theweeds is increased which causes drying-out of the weeds.
    An advantage of all embodiments is that no pesticides at all are required to controlthe weed(s), providing environmentally friendly weed-control. A further advantageof different embodiments is that also they are also friendly to a user or otherpersons using or being influenced by the weed control, also following treatmentsince the foam is also not hazardous to humans or animals, not even the foam extract before mixing with the water.
    Another advantage of all embodiments is that the effect of the treatment is long lasting compared to known methods.
    Herein, the term “weed” includes plants commonly regarded as weed plants butalso any other plant that is not desired. The term “control” means control but also more or less complete destruction of the plant.
    Other objects, advantages and features of embodiments will be explained in thefollowing detailed description when considered in conjunction with accompanying drawings and claims.
    BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a system for weed-control according to an embodiment of the invention;Figure 2 is a detail-view of two nozzies for distribution in operation; and Figure 3 is a view showing the nozzies and part of the system mounted to a vehicle, herein a truck.
    DETAILED DESCRIPTION ln the following, different aspects will be described in more detail with referencesto certain embodiments and to the accompanying drawings. For purposes ofexplanation and not limitation, specific details are set forth, including particularscenarios and techniques, in order to provide a thorough understanding of thedifferent embodiments. However, other embodiments that depart from these specific details may also exist.
    Embodiments are described in a non-limiting general context in relation toexample scenarios where and with a system for weed-control according to the oneshown in Figure 1, where the system is shown and described schematically onlynot being mounted on a vehicle as typically in daily use _ However, it should benoted that the embodiments may typically be mounted to a vehicle. Mounting to a vehicle is therefore explicitly shown in figure 3.
    Figure 1 illustrates a system 10 for weed-control of a surface of treatment (notshown explicitly in this figure) according to an embodiment of the invention. Thesystem 10 comprises a water container 12 such as a water tank having a volumeof a few hundred to a few thousand liters or any equivalent and a container 14 for 5 biodegradable foam extract 14d, typically having a smaller volume than the watercontainer 12. Also multiple, or smaller or larger containers may be providedalternatively. The containers 12, 14 are connected by means of first 12a andsecond 14a conduits, respectively, to a heater 16, such as a boiler, for heating amixture of water and foam. The mixture may be mixed in the heater 16, or beforethe heater 16 as shown in this figure, wherein the first 12a and second 14aconduits are joined together before entering the heater 16. The heater 16 isconnected to a first pump 18, typically a high-pressure pump, and further to atleast one nozzle 19 adapted to distribute the mixture of water and foam on the surface of treatment.
    The foam is typically organic foam formed by hot water and an extract of corn andcocoa. The foam extract is used for forming a thermo-insulating layer over the hotwater onto the surface of treatment. The foam per se is not active in contact withthe plants (weed). The foam is bio-degraded in less than 24 hours following treatment, which has been proven during multiple tests and investigations.
    An advantage of all embodiments is that no pesticides at all are required to controlthe weed(s), providing environmentally friendly weed-control. This implies hugeenvironmental benefits compared to any known method used today according toour best knowledge. The distribution of hot, say 95-98 degree Celsius warm watercombined with a simultaneous distribution of a bio-degradable, typically organic foam leaves no form of pollution or environmental stress to the surroundings.
    Another advantage of all embodiments is that the effect of the treatment is longlasting compared to known methods. This is because heat treatment with hotwater and foam provides longer contact with a weed-plant and surrounds thewhole weed-plant and also penetrates the weed-plant more, where it is possible,compared to known methods of weed-control. 6 The second conduit also comprises a pre-heater 14b and a second pump 14c.Typically, the pre-heater 14b is adapted to control a viscosity s of the foam extract14d, and the second pump 14c is a dosage pump adapted for dosage of foamextract 14d. Typically, the pre-heater 14b, and the pumps 14c, 18 are adapted tobe controlled by means of a user interface (not shown) such as a computercontrolled monitor and control software for operation thereof and interaction with a USSR ln this way, a precise control of temperature, pressure and amount of mixture isprovided. This provides an optimized effect of weed control of the distributed mixture.
    Now is referred to Figure 2, which shows a detailed view of two nozzles fordistribution in operation. Typically, the nozzle 19 is adapted such that, in use, athermo-insulating layer of foam is provided onto a hot-water-layer on the surfaceof treatment. According to an embodiment, as shown in Figure 2, each nozzle 19has an essentially triangular hollow shape with an inlet 19a at its tip and an outlet19b at its base. Typically, the outlet 19b has an elongate (see inset figure) ovalorifice 19c for discharging the mixture of foam extract and water 20 on surface of treatment 21.
    Examples have shown that it is preferred to perform four treatments a first yearand the years following two to three treatments. This is considerable lesstreatment than required by conventional methods such as burning. The system iseffective to all types of weeds. The system also affects different types of weedseeds since these lose their ability to grow due to the heating with the mixture ofhot water and foam. The effect of the treatment therefore lasts longer than treatments by means of conventional methods.
    Figure 3 is a view showing the nozzles 19 and part of the system 10 mounted to a vehicle, herein a truck.
    The above mentioned and described embodiments are only given as examplesand should not be Iimiting. Other solutions, uses, objectives, and functions withinthe scope of the accompanying patent claims may be possible.
    权利要求:
    Claims (8)
    [1] 1. _ A system (10) for weed control of a surface, comprising a water container (12) and a container (14) for biodegradable foam extract (14d), which containers(12, 14) are connected by means of first (12a) and second (14a) conduits,respectively, to a heater (16) for heating a mixture (20) of water and foamextract, which heater (16) is connected to a first pump (18) and further to atleast a nozzle (19) adapted to distribute the mixture of water and foam extracton the surface. _ The system (10) according to c|aim 1, wherein the at least one nozzle (19) has an essentially triangular hollow shape with an inlet (19a) at its tip and an outlet(19b) at its base, the outlet (19b) having an elongate oval orifice (19c) for discharging the mixture of foam and water. _ The system (10) according to c|aim 1 or 2, wherein the second conduit (14a) comprises a pre-heater (14b) and a second pump (14c)_ _ The system according to c|aim 3, wherein the pre-heater (14b) is adapted to control a viscosity (a) of the foam extract (14d)_ _ The system according to c|aim 3 or 4, wherein the pump (14c) is a dosage pump. _ The system according to any one of the claims 1-5, wherein the first pump (18) is a high-pressure pump. _ The system (10) according to any of claims 1-3 further comprising a user interface for control thereof. 9 8. Use of a system for weed control of a surface, comprising a water container(12) and a container (14) for biodegradable foam extract (14d), whichcontainers (12, 14) are connected by means of first (12a) and second (14a)conduits, respectively, to a heater (16) for heating a mixture (20) of water andfoam extract, which heater (16) is connected to a first pump (18) and further toat least a nozzle (19) adapted to distribute the mixture of water and foam extract on the surface.
    类似技术:
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    US1075678A|1913-10-14|Hydrocarbon-burner.
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    同族专利:
    公开号 | 公开日
    SE538542C2|2016-09-13|
    EP2845481A1|2015-03-11|
    DK2845481T3|2016-11-14|
    EP2845481B1|2016-07-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5284174A|1992-08-18|1994-02-08|Chubb National Foam, Inc.|System and method for producing and maintaining predetermined proportionate mixtures of fluids|
    DE9306950U1|1993-05-07|1993-07-08|Fa. Klaus Wintner, Innsbruck, At|
    US5575111A|1995-09-28|1996-11-19|Rajamannan; A. H. J.|Method of using hot air foam to kill vegetation and pests|
    EP1450603B1|2001-09-27|2009-06-10|Waipuna Systems Limited |Method for weed control with hot foam|
    NL1027329C2|2004-04-22|2005-10-25|Phidaf B V|Method and device for controlling weeds.|
    DE202009001969U1|2009-03-16|2009-05-20|Ipros Industrie Produkte Service Gmbh|Device for thermal vegetation control|
    MX2013005162A|2010-11-09|2013-10-30|Weeding Technologies Ltd|Device for weed control.|WO2017002071A1|2015-06-30|2017-01-05|Mayer Erardo Mateo|Apparatus for weeding a ground by a high-pressure working fluid|
    GB201720478D0|2017-12-08|2018-01-24|Weeding Tech Limited|Surfactant supply system|
    法律状态:
    2021-10-12| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351020A|SE538542C2|2013-09-03|2013-09-03|Weed control system|SE1351020A| SE538542C2|2013-09-03|2013-09-03|Weed control system|
    DK14183374.9T| DK2845481T3|2013-09-03|2014-09-03|Weed control system|
    EP14183374.9A| EP2845481B1|2013-09-03|2014-09-03|System for weed control|
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