• 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:
    The present disclosure relates to a method of treating logs against insects, the logs being disposed in an enclosure (3) formed at least partially by a transport box, such as a container, comprising: a step of setting an intermediate atmosphere in which water vapor is injected into the enclosure (3) for a first period of time until the enclosure (3) reaches an intermediate atmosphere, corresponding to a temperature and / or a rate of humidity gives (e / s), aimed at removing the insects from the logs, then a heating step, in which the enclosure (3) is heated for a second period of time so that the enclosure (3) reaches a treatment atmosphere, corresponding to a given temperature and / or moisture content (I / O), to eliminate insects. The present disclosure further relates to a processing system (1) for carrying out the treatment method.
    公开号:BE1025556B1
    申请号:E2018/5477
    申请日:2018-07-06
    公开日:2019-04-11
    发明作者:Cédric Clément Maurer
    申请人:Tbp Solutions；
    IPC主号:
    专利说明:

    Method and system for treating logs against insects
    FIELD OF THE INVENTION The present disclosure relates to a method and a device for treating wood and more particularly wood logs.
    TECHNOLOGICAL BACKGROUND It is known in the prior art to treat wooden logs by removing them from their transport container to place them in an enclosure and then subjecting them to high temperatures in the enclosure. The enclosure can for example be removable. Such a treatment process is long and costly to set up. In fact, moving the logs from a transport container to a treatment enclosure lengthens the duration of the treatment process.
    In addition, insects are generally installed under the bark of logs, or in the heart of logs. Thus, it is necessary to maintain a high temperature in the enclosure for a long period of time to kill these insects. Indeed, these insects are protected by wood. This long heating period results in significant energy consumption.
    PRESENTATION OF THE INVENTION The aim of the present invention is to remedy all or part of the drawbacks mentioned above.
    To this end, the present disclosure relates to a method of treating logs against insects, the logs being arranged in an enclosure formed at least partially by a transport box, such as a container, the method comprising:
    an intermediate atmosphere setting step in which steam is injected into the enclosure during a first
    BE2018 / 5477 period of time, until the enclosure reaches an intermediate atmosphere, corresponding to a given temperature and / or humidity (e / s), aimed at removing the insects from the logs, then
    a heating step, in which the enclosure is heated for a second period of time so that the enclosure reaches a treatment atmosphere, corresponding to a given temperature and / or to a given humidity level (e / s), aimed at eliminating insects.
    The term "intermediate atmosphere" means an atmosphere close to tropical conditions, that is to say hot and humid to encourage insects to go out.
    By "insects" is meant any living organism within the bark or heart of logs. In particular, the term “insects” here encompasses any type of invertebrate animal, in particular any arthropod, as well as their larvae.
    It is understood by transport box such as a container, a box designed for the transport of goods by different modes of transport, for example in accordance with international ISO standards such as ISO 668 and ISO 1496. Such a box transport may for example be metallic and parallelepipedic and may be provided, at all angles, with gripping parts allowing it to be stowed and transhipped from one vehicle to another. Such a box can be part of the category of Intermodal Transport Units (ΙΓΠ).
    It is understood that the different steps are carried out in the same enclosure formed at least partially by the transport box.
    The heating step within the meaning of the present description may include a rise in temperature and / or a maintenance of the temperature of the treatment atmosphere.
    BE2018 / 5477 Thanks to these provisions, the temperature rise of the enclosure during the intermediate atmosphere step is rapid. In addition, when the water vapor reaches the surface of the logs and condenses, the dripping of droplets prevents the logs from drying out and therefore deteriorating. The droplets dripping on the surface of the logs also help to homogenize the distribution of heat over all the logs. Finally, the injection of steam allows the enclosure to be placed in an intermediate atmosphere which encourages insects to come out of the logs. Thus, their destruction is easier. The recovery of dead insects is also easier and less time-consuming. Thus, these provisions allow an effective treatment of logs against insects while avoiding drying of the logs. The purpose of the present treatment process is not to dry the logs.
    In addition to the characteristics which have just been mentioned, the proposed method may have one or more of the following characteristics, considered in isolation or according to technically possible combinations.
    In one aspect, in the intermediate atmosphere, the temperature is between 35 ° C and 60 ° C, preferably, the temperature is between 40 ° C and 50 ° C, preferably the temperature is 45 ° C, so as to obtain a temperature under the bark of the logs of between 20 ° C and 40 ° C, preferably of the order of 30 ° C.
    In one aspect, in the intermediate atmosphere, the humidity is between 50% and 90%, preferably the humidity is between 55% and 75%, preferably the humidity is around 60%.
    In one aspect, in the treatment atmosphere, the temperature is between 80 ° C and 220 ° C, preferably between 110 ° C
    BE2018 / 5477 and 180 ° C; for example, the temperature is 150 ° C or more so as to obtain a temperature under the bark of the logs of between
    70 ° C and 85 ° C, preferably around 75 ° C.
    In one aspect, the treatment atmosphere is prevailed until the temperature under the bark of the logs is between 70 ° C and 85 ° C, preferably, is of the order of 75 ° C One of the objectives of the treatment step is to obtain a temperature under the bark exceeding a threshold of 71 ° C, imposed by certain standards.
    According to one aspect, in the treatment atmosphere, the humidity rate is between 20% and 50%, preferably the humidity rate is between 25% and 40%, and preferably the rate d humidity is around 30%.
    In one aspect, the intermediate atmosphere step is carried out for a period between 90 minutes and 180 minutes for an ambient temperature between 0 ° C and 10 ° C.
    By ambient temperature is meant the temperature of the air outside the enclosure, for example, atmospheric temperature.
    In one aspect, the heating step is carried out for a period of between 90 and 180 minutes.
    In one aspect, the intermediate atmosphere step is carried out by the implementation of a steam generator. However, according to another embodiment, the step of placing in an intermediate atmosphere could be implemented by the steam generator in combination with a heating device and more particularly with a pulsed hot air generator.
    In one aspect, the heating step is carried out by the implementation of the heating device, and more particularly by the implementation of the pulsed hot air generator. However, according to another mode
    BE2018 / 5477 embodiment, the heating step could be implemented by the heating device in combination with and the steam generator.
    In one aspect, the temperature at the outlet of the pulsed hot air generator is between 120 ° C and 400 ° C.
    In one aspect, the temperature at the outlet of the pulsed hot air generator is adjustable.
    In one aspect, the method further comprises a stabilization step between the step of placing in an intermediate atmosphere and the heating step, in which the intermediate atmosphere in the enclosure is stabilized so as to favor the exit. log insects.
    The stabilization step in the sense of the present description is understood as a step in which the temperature can be stable or vary slightly, that is to say vary by a lesser amplitude than in the setting step intermediate atmosphere.
    In one aspect, the duration of the stabilization step is between 30 and 180 minutes.
    In one aspect, the air is stirred in the enclosure, for example using a fan.
    Thanks to these provisions, the conditions the temperature or the humidity level inside the enclosure are homogenized.
    In one aspect, at least one insect treatment product is sprayed into the enclosure.
    For example, in one aspect, the enclosure is heated, then a treatment product is sprayed. The treatment products which can be used are, for example, fungicides or cypermethrin-based products. In one aspect, the enclosure is isolated.
    In one aspect, there is an insulation element at least on an opening of the enclosure.
    In one aspect, the insulating element is fixed to the transport box so as to insulate the enclosure.
    BE2018 / 5477 Thanks to these provisions, the heat losses are limited and the treatment process is faster.
    In one aspect, we control the atmosphere of the enclosure of the enclosure through the implementation of a temperature and / or humidity control device.
    Thanks to these provisions, we know the temperature and / or the humidity inside the enclosure, which allows to adapt the first and second periods of time, manually or automatically.
    In one aspect, the temperature and / or humidity control is carried out in the enclosure and / or on the surface of the logs and / or under the bark of the logs and / or on the wall of the container. .
    In one aspect, the temperature and / or humidity control is carried out at a predetermined frequency, for example every ten minutes.
    In one aspect, the temperature control is carried out continuously.
    In one aspect, the control device comprises at least one temperature and / or humidity probe.
    In one aspect, the control device comprises a display screen, configured to display the temperature and / or the humidity level.
    In one aspect, the poster screen communicates with the at least one probe, for example by an electric cable or by the implementation of a wireless communication protocol, for example of the type in accordance with the IEEE 802.11 / WIFI standard.
    In one aspect, the control device comprises at least one electronic control unit configured to issue a control order so as to pass from the intermediate atmosphere step to the step of heating from a threshold value of
    BE2018 / 5477 temperature and / or determined humidity, observed in at least one area of the enclosure, for example using the at least one probe.
    In one aspect the temperature threshold value is between 35 and 60 ° C, preferably between 40 ° C and 50 ° C, the temperature threshold value is 45 ° C.
    In one aspect, the heating step is carried out by injecting hot air pulsed into the enclosure.
    The present disclosure also relates to a system for treating logs against insects configured to implement the method for treating logs according to any one of the abovementioned characteristics, the device for processing logs comprising:
    - a steam generator intended to communicate fluidly with the enclosure,
    - a heating device intended to communicate fluidly with the enclosure,
    - A steam distribution member, fluidly connected to the steam generator, the steam distribution member being intended to extend along the enclosure.
    By "intended to extend along the enclosure" is intended to extend over a length of the enclosure.
    Thanks to these provisions, the processing of logs can be carried out directly in the transport box of these logs, for example a container. Thus, it is not necessary to extract the logs from their transport case to process them. The vapor is distributed uniformly over at least a portion of the length of the enclosure.
    BE2018 / 5477 It is understood that the steam generator and the heating device are separate.
    In one aspect, the steam generator and the heating device are intended to communicate fluidly with the enclosure independently of one another.
    In addition to the features which have just been mentioned, the proposed device may have one or more of the following features, considered in isolation or in technically possible combinations.
    In one aspect, the distribution member comprises at least one fixing element intended to cooperate with at least one wall of the transport box.
    Thanks to these provisions, the steam is distributed substantially uniformly over the length of the enclosure.
    In one aspect, the at least one fixing element is intended to cooperate with the ceiling of the enclosure corresponding to an upper wall of the transport box.
    In one aspect, the distribution member comprises a ramp and a plurality of nozzles distributed along the ramp.
    In one aspect, the at least one fixing element comprises a magnet intended to cooperate with the at least one wall of the enclosure and a link configured to connect the magnet and the ramp.
    Thanks to these provisions, the steam distribution is carried out from the upper wall of the enclosure, which allows a good distribution of the steam in the enclosure. In addition, the installation of the distribution ramp in the enclosure is rapid and these fasteners are inexpensive.
    BE2018 / 5477 In one aspect, the treatment system further comprises an insulation element configured at least to close an opening of the enclosure.
    In one aspect, the insulation element can also be configured to isolate the walls of the enclosure.
    In one aspect, the insulation element is configured to allow fluid communication between the steam generator and the enclosure on the one hand, and the heating device and the enclosure on the other hand.
    In one aspect, the opening of the enclosure is a door opening of the transport case. However, it could be any opening of the enclosure.
    In one aspect, the insulation element comprising a first port connected to the steam generator and a second port connected to the heating device.
    In one aspect, the first orifice is fluidly connected to the distribution member.
    In one aspect, the insulation element includes a third air return port to the outside.
    In one aspect, the third air return port to the outside includes a non-return valve.
    Thanks to these provisions, overpressures inside the enclosure are avoided.
    In one aspect, the insulation element comprises an insulating sheet, covering at least part of the transport case. Preferably, the insulating sheet completely covers the transport case.
    BE2018 / 5477 In one aspect, the insulating sheet is made of material of the flexible raffia type.
    In one aspect, the insulating sheet is fixed to the transport box by at least one fixing element, for example such as hook-and-loop type bands or a rack closure.
    In one aspect, the insulation element includes a shutter cover, for example stainless steel or wood.
    In one aspect, the shutter cover is configured to close the opening of the enclosure.
    In one aspect, the insulation element further comprises seals, for example rubber, arranged along the edges of the closure cover, so as to provide thermal insulation of the enclosure.
    In one aspect, the insulation element comprises at least one element for holding the closure cover.
    In one aspect, the holding element is configured to form a stop making it possible to block the movements of the shutter cover towards the outside of the enclosure. Thus, the shutter cover is held between the at least one holding element and the edge of the opening of the enclosure, for example on a door frame of the enclosure.
    According to one aspect, the at least one holding element comprises a tongue projecting towards the opening, from an edge of the opening.
    In one aspect, the at least one holding element is removable.
    According to one aspect, the holding element comprises a magnet for fixing on the edge of the opening.
    In one aspect, the insulation element further comprises a shim arranged opposite the at least one holding element, configured
    BE2018 / 5477 to block the movements of the shutter cover towards the inside of the enclosure.
    In one aspect, the shim is configured to protrude towards the inside of the enclosure.
    In one aspect, the shim is configured to rest on the floor of the enclosure.
    In one aspect, the treatment system comprises an air stirring element, intended to be arranged inside the enclosure, preferably substantially at the center of the enclosure.
    Thanks to these provisions, the temperature and / or the humidity level inside the enclosure are homogenized.
    The present disclosure also relates to an assembly comprising a transport box such as a container, and a log processing system configured to cooperate with the transport box.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention and its advantages will be better understood on reading the detailed description which follows, of the embodiments of the invention given by way of illustrative and nonlimiting examples. This description refers to the attached drawings, in which:
    - Figure 1 shows the wood log processing system cooperating with the log transport box,
    FIG. 2A represents a rear view of the log transport box, equipped with the closure cover,
    FIG. 2B represents a view of the insulation element according to section IIB,
    FIG. 3 represents the stages of the treatment method, and
    - Figure 4 shows an example of a temperature variation curve as a function of time during the processing of logs.
    BE2018 / 5477 FIG. 1 represents a system 1 for treating logs against insects. The processing system 1 is configured to cooperate with an enclosure 3, in which the logs are arranged. The enclosure 3 is formed in part by a transport box, for example a container 5. In the embodiment shown, the container is a rectangular parallelepiped comprising horizontal walls constituting the floor and the ceiling of the container, two short vertical walls , corresponding to the width of the rectangle, and two long vertical walls, corresponding to the length of the rectangle. One of the short vertical walls consists of a double leaf door. The length of the enclosure is therefore understood here as being a measurement of the enclosure 3 corresponding to the measurement of the long vertical walls of the container 5. The width of the enclosure is therefore understood here as being a measurement of the enclosure 3 corresponding to the measurement of the short vertical walls of the container 5.
    The log processing system 1 comprises a steam generator 7 in fluid communication with the enclosure 3 via a first sheath 9.
    The treatment system 1 further comprises a heating device 11, comprising a pulsed hot air generator 12, in fluid communication with the enclosure 3 via a second sheath 13.
    The treatment system 1 also includes a steam distribution member 15, connected fluidly to the steam generator 7. The steam distribution member 15 is intended to extend along the enclosure 3, c ' that is, over the length of the enclosure.
    Thus, the processing of logs can be carried out directly in the container 5. Thus, it is not necessary to extract the logs to process them, which saves time and an economic gain of
    BE2018 / 5477 the processing operation. In addition, the steam is distributed uniformly over the length of the enclosure 3.
    The steam distribution member 15 comprises a ramp 17 and a plurality of nozzles 19 distributed along the ramp 17. The steam distribution is thus better distributed in the enclosure.
    The distribution member 15 comprises a plurality of fastening elements 21 intended to cooperate with at least one upper wall 3a of the enclosure 3. Thus, the steam distribution is carried out from the upper wall 3a of the enclosure 3, which allows good distribution of the vapor in enclosure 3.
    The installation of the ramp 17 in the enclosure 3 is carried out by inserting the ramp in an upper space between the ceiling of the enclosure and the logs. The ramp 17 is inserted into this space from the double leaf door.
    Alternatively, the installation of the ramp 17 in the enclosure 3 can be achieved by a door opening in the upper horizontal wall. The door in the upper horizontal wall also allows the loading and unloading of logs.
    Each of the fastening elements 21 comprises a magnet 23 cooperating with the ceiling 3a of the enclosure, corresponding to the upper horizontal wall of the container, and a link 25 connecting the magnet 23 and the ramp 19. Thus, the installation of the ramp 19 in the enclosure 3 is rapid and the fastening elements 21 are inexpensive. The link 25 can be produced by any means, preferably flexible. The link 25 can also be elastic.
    The attachment of the ramp 19 to the ceiling 3a of the enclosure 3 can however be carried out by any means, preferably by any means
    BE2018 / 5477 removable. For example, the attachment of the ramp 19 to the upper wall 3a of the enclosure 3 can be carried out by removable bonding.
    The processing system 1 further comprises an insulation element 27, shown in Figure 2A. In the embodiment shown, the insulation element 27 closes one of the openings of the double-leaf door of the container 5.
    The insulation element 27 comprises a closure cover 29, here made of stainless steel. The closure cover 29 could, according to other embodiments, be made of any type of insulating material, for example wood. The shutter cover 29 is arranged across the door opening so as to close this opening.
    The insulation element 27 further comprises seals 31, here made of rubber, arranged along the edges of the closure cover 29 so as to insulate the enclosure 3.
    The insulation element 27 further comprises, in the example shown, four holding elements, here tongues 30, of the closure cover 29. Two tongues are arranged on the upper edge of the opening and two tabs are arranged substantially face to face on the upper part of the lateral edges of the opening.
    The tongues 30 project towards the door opening, from one edge of the opening. The tongues 30 form a stop making it possible to block the movements of the shutter cover 29 towards the outside of the enclosure 3. Thus, the shutter cover 29 is held between the tongues 30 and the edge of the door frame of the 'enclosure 3. The tongues 30 are removable. In this embodiment, the tongues 30 comprise a magnet for fixing to the edge of the opening 30. The tongues 30 could be fixed by any other means to the edges of the opening, for example by gluing.
    BE2018 / 5477 The insulation element 27 further comprises a shim 32, visible in FIG. 2B, projecting towards the inside of the enclosure 3. The shim 32 is here arranged in an area remote from the tongues 30, in this case at the lower edge of the shutter cover 29. The shim 32 is configured to block the movements of the shutter cover 29 towards the interior of the enclosure 3. The shim 32 rests on the ground of the enclosure 3 and is disposed against the closure cover 29. The closure cover 29 could be mounted on the container 5 by any other means.
    The insulation element 27 is configured to allow fluidlque communication between the steam generator 7 and the enclosure 3. Thus, the insulation element 27 comprises a first orifice 33 connected to the steam generator 7. The first orifice 33 is also fluidly connected to the distribution member 15.
    The insulation element 27 is configured to allow fluid communication between the heating device 11 and the enclosure 3. Thus, the insulation element 27 comprises a second orifice 35 connected to the heating device 11.
    The insulation element 27 comprises a third orifice 37, configured to allow air return to the outside, in order to avoid overpressures inside the enclosure 3. The orifice 37 comprises , for example, a non-return valve.
    According to another embodiment, the insulation element 27 is further configured to isolate the walls of the container 5. For example, the insulation element 27 comprises an insulating sheet, covering at least part of the container 5. Preferably, the insulating cover completely covers the container 5. For example, the insulating cover is of raffia type material. Raffia is flexible and for example of the EMBATERM type. The insulating sheet is fixed to the container 5 by members
    BE2018 / 5477 for fixing, for example strips of the hook-and-loop type or rack and pinion closures.
    The treatment system 1 comprises an air stirring element 39, arranged in the enclosure 3. In the embodiment shown, the air stirring element 39 comprises a fan 41. Thus, the atmosphere in enclosure 3 is homogenized.
    Figure 1 shows the circulation of hot air and steam. Hot air is represented by a solid arrow and steam is represented by a dotted arrow.
    The steam is produced by the steam generator 7, then circulates along the sheath 9 to the ramp 11. The steam circulates in the ramp 11 and leaves it by one of the nozzles 19 so as to be distributed along the enclosure 3. When the steam leaves the nozzles, its pressure is approximately 10 bars. The steam then descends to the logs and can condense and run off on the logs to prevent them from drying out. Dripping condensed droplets on the logs also helps distribute the heat on the surface of the logs. The vapor can also be entrained by the fan 41 which projects it towards the side of the container 5 opposite the inlet of hot air. In the event of overpressure, steam can escape through port 37.
    [YES] The hot air is produced by the hot air generator 12, then circulates along the sheath 13, to the orifice 35. The hot air is thus injected into the enclosure 3. So that the hot air does not park in the first half of the enclosure lengthwise and relative to the orifice 35, the fan 41 is placed substantially in the center of the enclosure 3 and thus allows the circulation of hot air towards the side of the container 5 opposite the hot air inlet. Thus, the rise in temperature in the enclosure 3 is homogeneous. In the event of overpressure, hot air can escape through port 37.
    BE2018 / 5477 The treatment system 1 also includes a control device 43, configured to control the atmosphere of the enclosure 3 during the treatment of logs by measuring the temperature and the humidity rate.
    Measuring the temperature and the humidity can be carried out at a predetermined frequency, for example every ten minutes, or continuously.
    The monitoring device 43 comprises a first temperature probe 45 disposed in the enclosure 3, a second temperature probe 47 disposed on a wall of the container, a third temperature probe (not shown) disposed on the surface of the logs. and a fourth temperature probe (not shown) disposed under the bark of the logs.
    The control device 43 also includes a humidity rate probe 49 arranged in the enclosure 3.
    The control device 43 comprises a display screen, configured to display the measurements taken by the temperature probes 45, 47 and the humidity rate 49. The display screen communicates with the temperature probes 45 , 47 and the humidity level 49, for example by an electric cable or else by the implementation of a wireless communication protocol, for example of a type conforming to the IEEE 802.11 / WIFI standard.
    The control device 43 may also include an electronic control unit configured to control the steam generator 7 and the hot air generator 12 according to the measurements made by the temperature probes 45,47 and the rate d humidity 49.
    [0118] Figure 3 shows the steps of a method of treating logs against insects. The logs are arranged in enclosure 3.
    BE2018 / 5477 First of all, during an installation step El, the treatment system 1 is installed on the transport box. In particular, the distribution member 15 is installed on the upper wall of the enclosure 3a.
    The fan 41 is also installed at a central position in the enclosure.
    Then, during an insulation step E2, the enclosure 3 is isolated. During this step, the obturation cover 29 is placed on the door opening of the enclosure 3. The closure cover 29 to the container 5 so as to insulate the enclosure 3. Thus, the heat losses are limited and the treatment process is faster.
    In an intermediate atmosphere E3 step, water vapor is injected into the enclosure 3 for a first period of time until the enclosure 3 reaches an intermediate atmosphere, corresponding to a given temperature and humidity, so that the insects discover themselves.
    In the intermediate atmosphere, the temperature is between 35 ° C and 60 ° C, preferably between 40 ° and 50 ° and preferably the temperature is 45 ° C. These temperatures inside the enclosure make it possible to reach a temperature of between 20 ° C and 40 ° C under the bark of logs and preferably 30 ° C. The humidity level is between 50% and 90%, preferably the humidity level is between 50% and 90%, preferably the humidity level is 60%.
    The intermediate atmosphere setting step E3 is carried out for a period of between 90 and 180 minutes, assuming that the outside ambient temperature is between 0 ° C and 10 ° C.
    The intermediate atmosphere setting step E3 is implemented by the steam generator 7. However, according to another mode of
    BE2018 / 5477 realization, the intermediate atmosphere setting step E3 could be implemented by the steam generator 7 and the hot air generator
    12, in combination.
    In a heating step E4, implemented by the hot air generator 12, the enclosure is heated for a second period of time so that the enclosure 3 reaches a treatment atmosphere, corresponding to a given temperature and humidity, so that insects are destroyed.
    In the treatment atmosphere, the temperature is between 80 ° C and 220 ° C, preferably the temperature is between U0 ° C and 180 ° C the temperature is 150 ° C, so as to obtain a temperature under the bark of logs between 70 ° C and 85 ° C and preferably of the order of 75 ° C. The humidity level is between 20% and 50%, preferably between 25% and 40% and preferably the humidity level is 30%.
    The heating step E4 is carried out for a period of between 90 and 180 minutes. FIG. 4 represents an example of a curve of variation of the temperature in the enclosure as a function of time during the stages of intermediate atmosphere setting E3 and heating E4.
    The heating step E4 is implemented by the hot air generator 12. However, according to another embodiment, the heating step E4 could be implemented by the hot air generator 12 and the steam generator 7, in combination.
    The temperature at the outlet of the hot air generator 12 is between 120 ° C and 400 ° C. The temperature at the outlet of the hot air generator 12 is adjustable.
    Thus, thanks to the injection of steam, the temperature rise of the enclosure during the intermediate atmosphere setting step E4 is faster. In addition, steam injection allows
    B E2018 / 5477 to prevent the logs from drying out and therefore deteriorating. The droplets also make it possible to homogenize the distribution of heat over all the logs. Finally, the injection of steam allows the enclosure 3 to be placed in an intermediate atmosphere of the insects so that they come out of the logs. Thus, their destruction is easier. The recovery of dead insects is also easier and less time-consuming.
    Optionally, the method further comprises a stabilization step E3 'between the step of placing in an intermediate atmosphere E3 and the heating step E4. During this stabilization step E3 ′, the intermediate atmosphere in the enclosure 3 is stabilized so as to encourage the insects to leave the logs. The duration of the stabilization step E3 'is between 0 and 180 minutes, preferably, the duration of the stabilization step is between 30 and 180 minutes.
    During the entire duration of the stages of intermediate atmosphere and heating E3, E4, and possibly stabilization E3 ', the air is stirred in the enclosure 3 by implementing the fan 41. Thus, the temperature and / or the humidity level inside the enclosure 3 are homogenized.
    During the entire duration of the stages of intermediate atmosphere and heating E3, E4, and possibly of stabilization E3 ′, the atmosphere of the enclosure 3 is controlled by the use of the control device 43.
    Thanks to these provisions, we know the temperature and / or humidity measurements inside the enclosure 3, thus making it possible to adapt the first and second periods of time.
    According to one embodiment, the electronic control unit is configured to issue a command order so as to pass from the intermediate atmosphere step to the heating step from a threshold value of temperature and / or humidity
    BE2018 / 5477 determined. For example, the temperature threshold value in the enclosure is of the order of 45 ° C. In a preferred embodiment, the threshold value to be considered is the temperature under bark measured by the fourth temperature probe placed under the bark of logs. In this case, the threshold value is for example of the order of 30 ° C.
    Although the present invention has been described with reference to specific exemplary embodiments, modifications can be made to these examples without departing from the general scope of the invention as defined by the claims. In particular, individual features of the various illustrated / mentioned embodiments can be combined in additional embodiments. Therefore, the description and the drawings should be considered in an illustrative rather than restrictive sense.
    权利要求:
    Claims (13)
    [1]
    1. Method for treating logs against insects, the logs being arranged in an enclosure (3) formed at least partially by a transport box, such as a container (5), comprising:
    an intermediate atmosphere setting step (E3) in which water vapor is injected into the enclosure (3) for a first period of time until the enclosure (3) reaches an intermediate atmosphere, corresponding to a given temperature and / or humidity (e / s), aimed at removing the insects from the logs, then
    - a heating step (E4), in which the enclosure (3) is heated for a second period of time so that the enclosure (3) reaches a treatment atmosphere, corresponding to a temperature and / or to a given humidity level (s), aimed at eliminating insects.
    [2]
    2. Method according to claim 1, wherein, in the intermediate atmosphere, the temperature is between 35 ° C and 60 ° C, preferably the temperature is between 40 ° C and 50 ° C, preferably the temperature is 45 ° C.
    [3]
    3. Method according to one of claims 1 or 2, wherein, in the treatment atmosphere, the temperature is between 80 ° C and 220 ° C, preferably the temperature is between 110 ° C and 180 ° C, preferably, the temperature is 150 ° C, so as to obtain a temperature under the bark of the logs of between 70 ° C and 85 ° C, preferably of the order of 75 ° C.
    [4]
    4. Method according to one of the preceding claims, further comprising a stabilization step (E39 between the intermediate atmosphere step (E3) and the heating step (E4), in which one stabilizes
    BE2018 / 5477 the intermediate atmosphere in the enclosure (E3) so as to encourage the removal of insects from the logs.
    [5]
    5. Method according to one of the preceding claims, in which the atmosphere of the enclosure (3) is controlled by the use of a temperature and / or humidity control device (43) .
    [6]
    6. Method according to one of the preceding claims, in which the heating step (E4) is carried out by injecting hot air pulsed into the enclosure (3).
    [7]
    7. Log treatment system (1) against insects configured to implement the log treatment method according to any one of claims 1 to 6, the log treatment device (1) comprising:
    - an enclosure (3) formed at least partially by a transport box, such as a container, in which the logs are arranged,
    - a steam generator (7) intended to communicate fluidly with the enclosure (3),
    - a heating device (11) intended to communicate fluidly with the enclosure (3),
    - A steam distribution member (15), fluidly connected to the steam generator (7), the steam distribution member (15) being intended to extend along the enclosure (3).
    [8]
    8. The system of claim 7, wherein the distribution member (15) comprises a ramp (17) and a plurality of nozzles (19) distributed along the ramp (17).
    BE2018 / 5477
    [9]
    9. System according to one of claims 7 or 8, wherein the distribution member (15) comprises at least one fixing element (21) intended to cooperate with at least one wall (3a) of the transport box.
    [10]
    10. The system of claim 9, wherein the at least one element
    5 of fixing (21) comprises a magnet (23) intended to cooperate with the at least one wall of the enclosure (3a) and a link (25) configured to connect the magnet (23) and the ramp (17) .
    [11]
    11. System according to one of claims 7 to 10, further comprising an insulation element (27) configured at least to close an opening
    10 of the enclosure (3).
    [12]
    12. The system of claim 11, wherein the insulating element is further configured to allow fluid communication between the steam generator (7) and the enclosure (3), and between the heating device (11) and the enclosure (3).
    [13]
    13. System according to one of claims 7 to 12, further comprising an air stirring element (39), intended to be arranged inside the enclosure (3).
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    同族专利:
    公开号 | 公开日
    BE1025556A1|2019-04-05|
    FR3068631A1|2019-01-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1033787A|1951-03-09|1953-07-15|Process for treating wood|
    FR2636127B1|1988-09-02|1991-01-25|Bertin & Cie|PROCESS AND INSTALLATION FOR DRYING WOOD OF THE DISCONTINUOUS TYPE IN THE PRESENCE OF WATER VAPOR|
    JPH085237A|1993-12-29|1996-01-12|Jiro Sato|Method and device for drying wooden material|
    FR2720969B1|1994-06-14|1997-02-28|
    US7846373B2|2005-10-03|2010-12-07|Xorella Ag|System and method for treatment of wooden materials|
    CN105538453B|2016-02-05|2017-09-29|唐山港集团股份有限公司|A kind of log heat treatment method under the conditions of steam under pressure|FR3111686A1|2020-06-18|2021-12-24|Environnement Services|Heat treatment system for container of goods, such as wood logs|
    法律状态:
    2019-05-16| FG| Patent granted|Effective date: 20190411 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1756380|2017-07-06|
    FR1756380A|FR3068631A1|2017-07-06|2017-07-06|METHOD AND SYSTEM FOR TREATING LOGS AGAINST INSECTS|
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