• 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:
    Tubular absorbent filter of ethylene or other gases for refrigerated transport containers, made up of a cylindrical tube of plastic mesh (2), with hermetic caps (3) at both ends, which contains absorbent granules of ethylene or other gases inside, where said mesh (2) has a structural configuration composed of an inner crown (20) of circular filament (201), and an outer crown (21) of wing-shaped filament (211), the base of which is wider than its distal end, facilitating the entry of air flow into the tube. In addition, it comprises a support accessory (4) that is fixed in the container for which the filter (1) is intended, and that has an aerodynamic shape, which helps to increase the flow of air through the filter (1), and means of collecting liquids. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2803824A1
    申请号:ES201930687
    申请日:2019-07-24
    公开日:2021-01-29
    发明作者:Pons Ramón Geli；Vilar Mónica Sabater；Alegria Carlos Geli；Guerrero Carmen Moreno
    申请人:Greenkeeper Iberia S L；
    IPC主号:
    专利说明:

    [0003] OBJECT OF THE INVENTION
    [0005] The invention, as expressed in the wording of the present specification, refers to an absorbent tubular filter of ethylene or other gases for refrigerated transport containers that provides, to the function for which it is intended, advantages and characteristics, which are described in detail below, which represent an improvement of the current state of the art.
    [0007] More specifically, the object of the invention focuses on an absorbent filter of which, shaped like a cylindrical plastic mesh tube, closed at both ends with two hermetic caps, incorporates inside granulated absorbent materials of ethylene or other gases, and They are applicable for the absorption of ethylene or other volatiles produced by fresh products such as fruits, vegetables, flowers or ornamental plants transported in refrigerated containers, thus preventing them from deteriorating prematurely, which is essentially distinguished by presenting an innovative weave of the mesh yarn and a new support that improve its aerodynamic properties, managing to significantly increase the air flow that passes through it, which results in a more efficient reduction of air pollutants, and in that it has a new design that incorporates fewer plastic materials and allows reduce the waste generated.
    [0009] FIELD OF APPLICATION OF THE INVENTION
    [0011] The field of application of the present invention is framed within the sector of the industry dedicated to the filtration of gases, specifically in the manufacture of filters to absorb ethylene and / or other volatiles produced by fruits, vegetables, flowers and ornamental plants, and other fresh produce. More specifically, the product is intended for the wholesale transport of said fresh products in all types of refrigerated containers.
    [0013] BACKGROUND OF THE INVENTION
    [0015] As a reference to the state of the art, it is worth mentioning patent number ES2665250T3, property of OZEANO URDINA SL, referring to an ethylene absorption filter for refrigerated spaces.
    [0017] The ethylene absorbent tubular filter is widely used to protect fruits, vegetables, flowers, ornamental plants and other fresh produce from the damaging effects of ethylene (ripening and senescence hormone) and other volatile compounds during transportation. The tubular filter, filled with absorbent granules of ethylene or other gases, is generally installed in the intake grille or upper part of the last pallets of the refrigerated containers by means of flanges that, in the case of the current Greenkeeper Iberia filter, are incorporated to the plug.
    [0019] Currently there are several companies on the market selling different brands of said tubular filters internationally (Greenkeeper Iberia SL, Bioconservacion SA, BioXTEND® Co, Ozeano Urdina SL and Sensitech Inc.) that in essence do not differ from each other, so the product it has become a kind of market standard. In fact, four of these companies (including Greenkeeper Iberia) make up the cylindrical tube with a semi-rigid internal mesh and a flexible external mesh, which have exactly the same specifications and only change the color. Ozeano's cylindrical tubular filter incorporates other types of materials and specifications in its support material, but essentially it does not differ from the others in terms of functionality either.
    [0021] Fresh products emit ethylene at a constant emission rate that ranges approximately between 0.01 and 4 | jl / kg * h under the usual temperature and atmosphere conditions of refrigerated containers. The ethylene produced by the fresh products themselves accumulates inside the container. It has been shown that there is a linear relationship between maturation time and the logarithm of ambient ethylene concentration at a given temperature and that ethylene is active as a hormone at concentrations as low as 5 ppb [Ku et al. Importance of low ethylene levels to delay senescence of non-climactic fruits and vegetables (1999). Australian Journal of Experimental Agriculture 39 (2) 221-224; Wills et al. Ripening of climacteric fruits initiated at low ethylene levels (2001). Australian Journal of Experimental Agriculture 41 (1) 89-92].
    [0023] On the other hand, it has also been shown that certain volatile compounds produced by fresh products (limonene, acetaldehyde, furaneol, ethyl-butonoate ...) act as gaseous signals that activate the germination and development of fungal spores [Neri et to the. Role of strawberry volatile compounds in the development of Botrytis cinerea infection (2015). Plant Pathology 64 (3), 709-717; Rodríguez et al. The monoterpene limonene in orange peels attracts pests and microorganisms (2011). Plant signaling and behavior 6 (11): 1820-3]
    [0025] So that ethylene or other gases do not accumulate to levels that are harmful to fresh produce, the filtration system must absorb them at a higher rate than their own emission. And the faster the absorption, the lower the concentration of polluting gases in the environment and the better the conservation of fresh products.
    [0027] A limiting factor in the speed and contaminant absorption capacity of the standard tubular filter is the flow of air through it. Tubular filters are placed on the filter screen precisely to increase the air flow through them. However, the air flow through the standard filter could still be greatly increased. In fact, the objective of the present invention is the development of a new filter with better aerodynamic properties that significantly increase the passage of air through it.
    [0029] On the other hand, it must be taken into account that these tubular filters are for single use and most of them end up in landfills, if they cannot be recycled. With the aim of reducing the waste generated and marketing a product that is more respectful with the environment, a second objective of the invention is the development of a new filter that incorporates fewer plastic elements in its design and can also be manufactured with materials biodegradable plastics.
    [0031] On the other hand, and as a reference to the current state of the art, it should be noted that, at least by the applicant, the existence of any other filter, or any other invention of similar application, that presents technical, structural and constitutive elements equal or similar to those presented by the one claimed herein.
    [0033] EXPLANATION OF THE INVENTION
    [0035] The absorbent tubular filter of ethylene or other gases for the transport of fresh products in refrigerated containers that the invention proposes is configured as a solution optimal to achieve the stated objectives, being the characterizing details that make it possible and distinguish them conveniently collected in the final claims that accompany the present description.
    [0037] More specifically, what the invention proposes, as noted above, is a new type of filter that, applicable for the absorption of ethylene or other volatiles produced by fresh products such as fruits, vegetables, flowers or ornamental plants transported in refrigerated containers. , preventing them from deteriorating prematurely, it is one of those shaped like a cylindrical plastic mesh tube, closed at both ends with two hermetic caps, which incorporates granulated materials absorbent of ethylene or other gases, and is distinguished from those currently existing in the market, basically, for the following:
    [0039] - an innovative weave of the thread of its unique tubular mesh, which allows the entry of a greater flow of air;
    [0040] - greater diameter of tube and greater length of the same to increase the amount of granulate per unit of support material and to allow the use of a single tube when generally two are used;
    [0041] - incorporation of less plastic material and inclusion of biodegradable materials.
    [0043] In addition, it is optionally also distinguished by having a support that further reinforces the amount of air that passes through the interior of the tube, which, advantageously, incorporates a liquid collection system and remains fixed in the container for subsequent uses.
    [0045] Specifically, the filter is made of a single plastic mesh, biodegradable or not, with a network of thread whose structural configuration, formed from an inner crown that has the same measurements as the traditional ones and an outer one that changes its round shape by one in the shape of a wing, provides aerodynamic properties, since it facilitates the entry of air into the interior of the tube, generating an air suction effect that significantly improves the flow of air through it and, therefore, more effectively absorbs the air pollutants and keeps them at lower levels for the benefit of fresh produce transported. Optionally, it is also accompanied by a support, which is placed on the grid permanently and remains in the container for subsequent uses, which further increases the air flow and also incorporates an innovative system of collection of liquids to prevent staining of cargo from accidental leaks of liquid permanganate which, although very rarely, could occur.
    [0047] In one embodiment, the filter respects the classic dimensions of 40-45 mm in diameter and 50-100 cm in length, and in an alternative embodiment, it has larger dimensions: 45-55 mm in diameter and 50-120 mm. cm in length.
    [0049] For its part, the reduction of plastic elements of the filter object of the invention is due to the following:
    [0050] - the use of a single tubular mesh, instead of two as occurs in traditional filters; - by increasing the diameter and length of the filter, in the case of the embodiment of greater diameter and length, to include more granules per unit of support material; and - to the incorporation of biodegradable materials in the support material.
    [0052] The invention thus provides the market with a new type of more effective and more environmentally friendly cylindrical ethylene absorbent tubular filters.
    [0054] Table 1 inserted below includes the range of preferred dimensions of the tubular filter object of the invention and also of the standard model currently available on the market.
    [0056] Table 1.
    [0058]
    [0061] With these filter models, air flow simulations were carried out using a computer program (specifically the Ansys program ), in the standard filter EF100 (100 cm) without the external mesh that also incorporates this standard model (so the result is more favorable than in reality) and the filter object of the invention in its four formats: i) EF100AS (external diameter 42 mm and length 100 cm), ii) 2EF100 AS (external diameter 55 mm and length 120 cm), iii ) EF100AS + and iv) 2EF100AS +, where it was observed that up to 60% more air flow passes through the new filter formats than in the standard EF100 filter. In practice, this results in a lower equilibrium concentration (of ethylene or other gases) inside the container and therefore less risk of spoilage for fresh produce.
    [0063] If a practical case of transport in a container is taken and a simulation program of the concentration of ethylene inside the container is used that takes into account the different variables (ethylene emission from the fresh product at the given temperature and atmospheric conditions, the total product mass, the volume of the container, the air flow through the filter, the speed of the granulation, etc ...), the equilibrium concentration in the container can be estimated (that which is reached after about 10- 15 hours after the container has been closed and that depends on the emission rate of the fresh products and the speed of absorption by the filter).
    [0065] In the graph of Figure 7, a comparison of the estimated equilibrium concentration in a container with an ethylene emission of 0.1 ^ / kg * h obtained with the different standard filter models and according to the invention has been represented. The vertical axis of the graph includes the amount of ethylene concentration (ppm) and the horizontal axis time (hours). Specifically, the following filter models have been compared:
    [0067] - a standard filter EF75 (external 0 42 mm, length 75 cm),
    [0068] - two standard filters EF75,
    [0069] - a standard filter EF100 (external 0 42 mm, length 100 cm),
    [0070] - two standard filters EF100,
    [0071] - a filter according to the invention 2EF100AS (0 external 55 mm, 100 cm long),
    [0072] - two filters object of the invention EF100AS (0 external 42 mm, 100 cm long), - two filters object of the invention 2EF100AS (0 external 55 mm, 100 cm long) and - two filters object of the invention EF100AS + (EF100AS with support).
    [0074] In view of said graph, it can be seen that the filters object of the invention, and especially the EF100AS + model, that is, the one formed by two filters with an external diameter 0 of 55 mm, 100 cm in length and support, they obtain clearly lower ethylene concentrations than the standard filters currently on the market.
    [0076] DESCRIPTION OF THE DRAWINGS
    [0078] To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, the present specification is accompanied, as an integral part thereof, by a set of drawings in which for illustrative purposes and non-limiting, the following has been represented:
    [0080] Figure number 1.- Shows a perspective view of an exemplary embodiment of the absorbent tubular filter of ethylene or other gases for refrigerated transport containers, object of the invention, represented together with the optionally available support, appreciating the essential parts that understands.
    [0082] Figure number 2.- Shows a perspective view of a segment of the tubular mesh of the filter, according to the invention, showing its configuration.
    [0084] Figure number 3.- Shows a cross-sectional view of the tubular mesh, showing its diameter.
    [0086] Figure number 4.- Shows an enlarged perspective view of a detail of the tubular mesh of the filter object of the invention, where the different configurations of the filaments that form the two crowns of the mesh are more clearly appreciated.
    [0088] Figure number 5.- Shows an enlarged view of detail A indicated in figure 3, where the configuration and dimensions of the mesh filaments are also appreciated.
    [0090] Figure number 6.- Shows a perspective view of one end of the tubular filter, according to the invention, once incorporated into the support, showing the liquid collection system that it has.
    [0092] And figure number 7.- Shows the graph mentioned in the previous section that compares the estimated ethylene concentration in a container with an ethylene emission of 0.1 ^ / kg * h obtained with different models of conventional filters and according to the invention.
    [0093] PREFERRED EMBODIMENT OF THE INVENTION
    [0095] In view of the aforementioned figures, and in accordance with the numbering adopted, an example of a preferred embodiment of the tubular filter of the invention can be seen in them, which comprises what is indicated and described in detail below.
    [0097] Thus, as seen in said figures, the filter (1) in question is formed, in a known manner, from a cylindrical tube of plastic mesh (2), closed at both ends with respective hermetic caps (3), in whose interior incorporates granulated materials that absorb ethylene or other gases, and is distinguished, essentially, by the fact that said mesh (2) has a structural configuration that facilitates the entry of air flow into the tube, being composed of the combination of an inner crown (20) formed by a circular section filament (201) and an outer crown (21) formed by a filament that, instead of a circular shape, has a wing-shaped section configuration (211), where its circular base is wider than its distal end (Figures 1 to 5).
    [0099] In the preferred embodiment, said mesh tube (2), which as said is made of a plastic material, being produced by a horizontal counter-rotating extrusion system and cooling by air, preferably has dimensions with an external diameter (d ) of between 40 and 55 mm and a length (l) of between 50 and 150 cm, where the circular filament (201) of the inner crown (20), preferably, has traditional measurements, that is, a radius (r) of 0.5 mm, while in the outer crown (21), the base of the wing-shaped filament (211) also has a radius (r) of 0.5 mm, the upper part has a radius (r) of 0.15 and the distance (di) between the center of both is 2.30 mm, with 2.95 mm being the total height (a) of said wing filament (211), as shown in figure 5.
    [0101] The preferred material of the plastic mesh (2) is HDPE ( High Density Polyethylene, in Spanish: high density polyethylene or HDPE), combined or not with fiberglass, but it can also be another type of material. Optionally, however, it can also be made of biodegradable materials such as PLA (polylactic acid or polyacid lactic).
    [0103] Optionally, the filter (1) comprises a support accessory (4) that is installed in a fixed on the grid of the container to which the filter (1) is intended, allowing subsequent use, since it can be easily incorporated and removed from it, which considerably facilitates the installation and replacement of the filter (1). In addition to serving as a support, this accessory also helps to further increase the flow of air through the filter (1), due to its aerodynamic shape, and to prevent accidents due to staining of the cargo through its system, a liquid collection system.
    [0105] For this, as can be seen in Figures 1 and 6, said support accessory (4) consists of an elongated element made of plastic material that incorporates two anchors (40) at its ends, suitable to adapt to the different diameters and lengths of the filter (1), and between which two longitudinal pieces are provided, an upper one (41) and a lower one (42), which house the filter (1) between them, presenting an approximately flat configuration that makes them function as' wings 'that force the air to pass through the filter (1).
    [0107] In the preferred embodiment, said anchors (40) are formed by individual C-shaped pieces suitable to receive the caps (3) from the ends of the mesh tube (2) of the filter (1), an adjustable closure (401) being provided ) which, as a flange insertable in an eyelet (402), serves to ensure the fastening thereof.
    [0109] Furthermore, the internal face (421) of the longitudinal piece or lower flange (42) defines a gutter that serves to collect the liquid that, although very rarely, could form in the filter (1) in accidental cases.
    [0111] Likewise, at least one end of the support accessory (4) provides for the existence of a hole (43) that communicates with said internal face (421) of the lower wing (42) and that, by inserting a hose (not shown), it can be connected to a collection tank for said liquid (figure 6).
    [0113] In the preferred embodiment, the filter medium contained inside the mesh tube (2) of the filter (1) is a spherical granulate or pellets composed of a high purity natural clay base and potassium or sodium permanganate with or without carbon. active, although it can contain any type of granules.
    [0115] Likewise, the filter (1) can have any of the weights and sizes within the usual range of tubular filters absorbing ethylene or other gases, being, however, the preferred size of 120 cm and external diameter 55 mm to contain 2 kg of granulate, as this format can replace the currently more widespread practice of using 2 tubular filters of 1 meter and 1 kg of granulate on the grid of the container, thus reducing the amount of plastic material that forms it and, consequently, the waste generated after its useful life.
    [0117] Having sufficiently described the nature of the present invention, as well as the way of putting it into practice, it is not considered necessary to make its explanation more extensive so that any expert in the field understands its scope and the advantages derived from it, stating that, Within its essentiality, it may be put into practice in other forms of implementation that differ in detail from that indicated by way of example, and to which it will also achieve the protection that is sought provided that its fundamental principle is not altered, changed or modified. .
    权利要求:
    Claims (11)
    [1]
    1. - ABSORBING TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORTATION CONTAINERS that, formed from a cylindrical tube of plastic mesh (2), closed at both ends with respective hermetic caps (3), inside which incorporates granulated materials absorbents of ethylene or other gases, is characterized by the fact that said mesh (2) has a structural configuration that facilitates the entry of air flow into the tube, being composed of the combination of an inner crown (20) formed by circular section filament (201), and an outer crown (21) formed by a filament that presents a wing-shaped section configuration (211), where its circular base is wider than its distal end, facilitating the entry of flow of air into the tube.
    [2]
    2. - TUBULAR ABSORBING FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to claim 1, characterized in that the circular filament (201) of the inner ring (20) has a radius (r) of 0.5 mm, and in the outer crown (21), the base of the wing-shaped filament (211) has a radius (r) of 0.5 mm, the top has a radius (r) of 0.15, and the distance (di) between the center of both is 2.30 mm, with 2.95 mm being the total height (a) of said wing filament (211).
    [3]
    3. - ABSORBENT TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to claim 1 or 2, characterized in that it comprises a support accessory (4) that is installed in a fixed way on the grid of the container for which the filter (1), in which it can be easily incorporated and removed for the installation and replacement of the filter (1).
    [4]
    4. - ABSORBING TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to claim 3, characterized in that the support accessory (4) has an aerodynamic shape, which helps to increase the flow of air through the filter (1) , as well as means of collecting liquids.
    [5]
    5. - ABSORBENT TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to claim 4, characterized in that the support accessory (4) consists of an elongated element of material plastic that at its ends incorporates two anchors (40), suitable to adapt to the different diameters and lengths of the filter (1), and between which two longitudinal pieces are provided, an upper one (41) and a lower one (42), which they house the filter (1) between them, presenting an approximately flat configuration that makes them function as 'wings' that force the air to pass through the filter (1).
    [6]
    6. - ABSORBING TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORTATION CONTAINERS, according to claim 5, characterized in that said anchors (40) are made up of C-shaped pieces suitable to receive the caps (3) of the ends of the mesh tube (2) of the filter (1), having provided an adjustable closure (401) which, as a flange insertable in an eyelet (402), serves to ensure their fastening.
    [7]
    7. - TUBULAR ABSORBING FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to claim 5 or 6, characterized in that the internal face (421) of the longitudinal piece or lower wing (42) defines a channel that serves to collect the liquid that may form on the filter (1) in the event of an accident.
    [8]
    8. - ABSORBENT TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORTATION CONTAINERS, according to claim 7, characterized in that, at least one end of the support accessory (4), the existence of a hole (43) that communicates with the internal face (421) of the lower wing (42) and that, by inserting a hose, can be connected to a collection tank for said liquid.
    [9]
    9. - ABSORBENT TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to any of claims 1 to 8, characterized in that the mesh tube (2) has dimensions with an external diameter (d) of between 40 and 55 mm and a length (l) of between 50 and 150 cm.
    [10]
    10. - ABSORBENT TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to any of claims 1 to 9, characterized in that the plastic mesh (2) is HDPE combined or not with fiberglass.
    [11]
    11.- ABSORBENT TUBULAR FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS, according to any of claims 1 to 9, characterized in that the plastic mesh (2) is made of biodegradable materials such as PLA.
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    同族专利:
    公开号 | 公开日
    ES2803824B2|2021-12-16|
    WO2021014047A1|2021-01-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0081297A1|1981-11-16|1983-06-15|Process Scientific Innovations Limited|Filters for purification of gases|
    EP0311454A1|1987-10-09|1989-04-12|Allen Davies Butler Limited|Atmosphere control device|
    WO2013012622A1|2011-07-18|2013-01-24|Carrier Corporation|Regenerative scrubber system with single flow diversion actuator|
    EP2772291A1|2011-10-25|2014-09-03|Ozeano Urdina, S.l.|Ethylene absorption filter for refrigerated spaces|
    US20140360374A1|2013-06-05|2014-12-11|N1 Technologies Inc.|Odor and Moisture Controller|
    CN203785368U|2014-02-21|2014-08-20|无锡德林船舶设备有限公司|Marine controlled atmosphere cold storage device|
    法律状态:
    2021-01-29| BA2A| Patent application published|Ref document number: 2803824 Country of ref document: ES Kind code of ref document: A1 Effective date: 20210129 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201930687A|ES2803824B2|2019-07-24|2019-07-24|TUBULAR ABSORBING FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS|ES201930687A| ES2803824B2|2019-07-24|2019-07-24|TUBULAR ABSORBING FILTER OF ETHYLENE OR OTHER GASES FOR REFRIGERATED TRANSPORT CONTAINERS|
    PCT/ES2020/070479| WO2021014047A1|2019-07-24|2020-07-23|Tubular filter that absorbs ethylene or other gases, for refrigerated transport containers|
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