EP0490073B1 - Device for the dehumidification of covered insulation or cavities - Google Patents

Device for the dehumidification of covered insulation or cavities Download PDF

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Publication number
EP0490073B1
EP0490073B1 EP91118458A EP91118458A EP0490073B1 EP 0490073 B1 EP0490073 B1 EP 0490073B1 EP 91118458 A EP91118458 A EP 91118458A EP 91118458 A EP91118458 A EP 91118458A EP 0490073 B1 EP0490073 B1 EP 0490073B1
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EP
European Patent Office
Prior art keywords
air
conveyors
housing
pressure
suction
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EP91118458A
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German (de)
French (fr)
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EP0490073A1 (en
Inventor
Alfred Dörle
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DOELCO-EXQUISIT, INH. ALFRED DOERLE
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Dolco-Exquisit Inh Alfred Dorle
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70—Drying or keeping dry, e.g. by air vents
    • E04B1/7015—Drying or keeping dry, e.g. by air vents by heating the ambient air

Definitions

  • the invention relates to a device for dehumidifying. the preamble of claim 1.
  • Such a device in which both a dry air pushing the screed and a blower that sucks the moist air out again is fastened in the same common soundproof housing, is known from DE-A-38 15 161.
  • the air enriched with moisture is pushed by the suction fan to a dryer, which is, however, outside of this common housing.
  • This device is said to be easy to transport so that it can be used directly in apartments during the day and night.
  • a comparable device is known from DE-U-86 01 005. This shows a device for drying screed Water damage, an air duct leading from an inlet to an outlet being provided in a dryer housing and containing at least two heat exchangers.
  • a radial blower is mounted at the outlet of the air duct and, if necessary, a further blower can also be provided to generate a low pressure. These blowers must also cause suction.
  • the device according to the invention has sufficient power to be able to renovate even large objects.
  • the circulating air volume can be adapted to the size of the object to be dehumidified, so that even small objects can be dehumidified with the device according to the invention.
  • the pressure conveyors, the suction conveyors and also the air dryers are accommodated on the common portable frame or in the common housing and only have to be connected via pressure and suction lines to the insulation layer or the like to be dehumidified by dry air.
  • the pressure conveyors, the suction conveyors and the air dryers are arranged in the common housing, the effort for transporting or assembling the device according to the invention consisting of various units is reduced to a portable level. Due to the parallel connection of the pressure conveyors and the suction conveyors, the pressure generated by the device remains approximately the same as compared to a series connection, without the fire risk or the wear of its devices or units increasing significantly.
  • the dry air and the air enriched with moisture can be transported to and from the device via relatively long air hoses.
  • This has the advantage that the device has to be installed outside the building to be renovated and only the air hoses have to be guided into the interior of the building.
  • the rooms can be practically noiseless and Impairment of heat and without using up space for the drying devices can be used practically unhindered.
  • the weight forces can be optimally distributed within the housing and a high air throughput can nevertheless be achieved. It is also possible in a simple manner to hermetically separate the connection, for example between the air dryers and the pressure conveyors, from the environment by the department of the units.
  • a power generator is provided on or in the common frame or housing for the power supply of the compressors and possibly also the air dryer.
  • the location of the device according to the invention can be selected outside the building to be renovated, regardless of an external power source.
  • the pressure conveyors, the suction conveyors, the air dryers and, if applicable, the power generator are accommodated in a common, sound-insulated portable housing and the power generator is arranged in a separate housing chamber. This favors the distribution of the weight of the portable housing.
  • the individual housing chambers have access openings arranged on the outside of the housing.
  • the chamber of the air dryer and the chamber of the suction conveyor each have at least one air opening leading to the outside exhibit.
  • the installation and ease of use of the device according to the invention is favored if the air outlets of the pressure conveyors and the air inlets of the suction conveyors can be connected to the insulating layer or the cavity to be dehumidified via air hoses that can preferably be wound up, and if the winding drums of these hoses are also expediently in or on the housing are stored.
  • the individual compressors of the device provide approximately the same air delivery volume per unit of time. It is advantageous if a controller is provided at least for the compressors, which switches on the same number of suction or pressure conveyors when a desired number of pressure conveyors or suction conveyors are put into operation.
  • a particularly advantageous embodiment according to the invention of independent importance provides that the device housing is designed as a road vehicle, in particular as a trailer, so that it can be very easily and quickly brought to a building to be renovated if it is for the renovation very large areas is equipped with correspondingly strong or numerous machines.
  • a device 1 in its cross section, which serves to dehumidify insulation layers lying under a cover layer or of cavities, such as occur for example with floors, walls, ceilings or similar parts of buildings.
  • the device 1 has six compressors, three of which are provided as pressure conveyors 2 for introducing dry air into the insulating layer or the cavity and three more as suction conveyors 3 for sucking out the moist air from the insulating layer.
  • three air dryers 4 are connected upstream in the direction of their air flow, with the aid of which the air required for dehumidification and taken from the atmosphere is dried before being pressed into the insulation layer or the cavity.
  • the pressure conveyor 2, the suction conveyor 3 and the air dryer 4 are connected in parallel in their air flow.
  • the pressure conveyors 2, the suction conveyors 3 and the air dryers 4 are fastened to one another in a shared, portable housing 5 in which a power generator 6 is also provided for supplying power to the compressors 2 and 3.
  • the individual unit groups are each housed in separate housing chambers K1 to K4.
  • the outputs 9 of the pressure conveyor 2 are connected to one another via a common compressed air line 10 which in this case runs through the housing 5 and which leads to a compressed air connection stub 11 accessible in the chamber K5. From there, the dry air drawn in by the pressure conveyors 2 is pressed into the insulating material to be dehumidified via air hoses 12.
  • any individual devices of the pressure conveyor 2 can be operated with individual ones of the air dryer 4.
  • the dry air is pressed into the insulation layer, which is regularly located under a screed or similar top layer, via expansion joints that are usually present on the edge of the top layer, or also through holes drilled in the top layer.
  • the air that is pressed through the insulating material and is now enriched with moisture is then sucked off again via expansion joints or bores that are present or prepared elsewhere.
  • the suction of the air flow enriched with moisture takes place through the suction conveyors 3, which are provided in the chamber K4 of the device 1.
  • the suction conveyor 3 are also connected via air hoses 12 to the corresponding expansion joint or bore of the room to be renovated, the air hoses 12 being connectable to the suction air connection stub 13 accessible from the chamber K5.
  • the suction conveyors 3 in the chamber K4 are also connected in parallel to one another; while their suction inputs 14 are hermetically sealed to the suction air connecting piece 13, their outputs 15 only lead into the interior of the chamber K4, from where they can escape into the atmosphere via the air opening 7 provided there.
  • the individual chambers K1 to K4 containing the power generator 6, the pressure conveyor 2, the suction conveyor 3 and the air dryer 4 and also the chamber K5 of the housing provided with the connecting pieces 11 and 13 of the compressor 5 each have an access opening 16, each of which can be closed via a door and allows entry into the chambers K1 to K5.
  • the individual compressors 2 and 3 have approximately the same air delivery volume per unit of time.
  • the performance of the device 1 can be adapted to the size of the object to be dehumidified.
  • a control 19 visible in FIGS. 1 and 2 is provided, which switches on the same number of suction conveyors 3 when a desired number of pressure conveyors 2 are put into operation.
  • the condenser drying systems provided as air dryers should have a total dehumidification capacity of 1,000 liters per day at 85% RH and 25 ° C.
  • the air drawn in from the atmosphere by the pressure conveyors 2 is dried to 40% RH by the condenser drying systems, in order to then be pressed into the insulating material to be dehumidified as dry air.
  • the chamber K2 there are 2 overpressure systems serving as pressure conveyors with a total air delivery rate of 23 cbm / min. are available, which are connected in parallel to each other, so that, depending on requirements, all can be put into operation at once can be or just a pressure conveyor or two.
  • the device 1 shown here thus has an air delivery volume which is sufficient for technical drying in the insulation layer area up to approximately 70 square meters of floor space.
  • the device 1 designed as a mobile drying device can be placed up to 300 meters from the object to be dried out, this distance being easily overcome with the aid of the air hoses 12.
  • FIG. 3 shows, it is now possible in the device 1 according to the invention to place the necessary machine and device units outside the building at a suitable location, so that the often difficult placement of the units inside the building at a suitable location is eliminated and the noise level is reduced can be dampened within the possibly still insulated housing so that it does not disturb the occupants or users of the building.
  • the housing 5 of the device is designed as a roadworthy trailer and is also provided with a trailer coupling 18, the device 1 can be transported very easily and quickly even to the intended installation site if the device 1 for the renovation of very large areas with correspondingly strong or numerous machines and units.
  • the weight forces can be optimally distributed within the housing or trailer and nevertheless achieve a high air passage, so that the lines can also be branched under certain circumstances can and still everyone single line pressure with enough air on the one hand and also high enough pressure can be applied.
  • the drying unit can also be used where there are no sufficiently high currents available to supply the electrical drives of the compressors.
  • the power generator 6 is operated with its own drive motor, which is preferably designed as an internal combustion engine.
  • the device 1 thus represents a mobile drying unit which can be quickly and easily set up outside of a building to be renovated and thus without taking up space inside the building and without impairing the furnishings inside the building and is even independent of the power supply.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Building Environments (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a device (1) for the dehumidification of covered insulation or cavities, in particular in floors, walls, ceilings or similar building parts, having at least two compressors, one of which serves as a pressure conveyor for introducing dry air into the insulation or the cavity and the other serves as a suction conveyor for sucking out the humid air from the insulation or the cavity, these compressors being provided in a common transportable framework or housing (5). A characteristic of the device (1) according to the invention is that at least two pressure conveyors connected in parallel in their air flow are connected to a corresponding number of air driers likewise connected in parallel, and that the same number of suction conveyors again connected in parallel are provided, the pressure conveyors, the suction conveyors and also the air driers being arranged, partitioned off from one another, on or in the common framework or housing (5) and at least the connection between the air driers and the pressure conveyors being hermetically isolated from the environment. The device (1) according to the invention thus constitutes a mobile drying unit which can be set up quickly and simply outside a building to be treated, thus requiring no space inside the building, and can even be independent of the power supply, provided that a generator is additionally accommodated in the housing (5). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Entfeuchten gem. dem Oberbegriff des Patentanspruches 1.The invention relates to a device for dehumidifying. the preamble of claim 1.

Eine derartige Vorrichtung, bei welcher in demselben gemeinsamen schallgedämmten Gehäuse sowohl ein trockene Luft unter den Estrich drückendes Gebläse als auch ein die feuchte Luft wieder absaugendes Gebläse befestigt sind, ist aus der DE-A-38 15 161 bekannt. Die mit der Feuchtigkeit angereicherte Luft wird von dem Sauggebläse zu einem Trockner gedrückt, der sich jedoch außerhalb dieses gemeisamen Gehäuses befindet. Diese Vorrichtung soll leicht zu transportieren sein, um sie unmittelbar in Wohnungen im Tag- und Nachtbetrieb einsetzen zu können.Such a device, in which both a dry air pushing the screed and a blower that sucks the moist air out again is fastened in the same common soundproof housing, is known from DE-A-38 15 161. The air enriched with moisture is pushed by the suction fan to a dryer, which is, however, outside of this common housing. This device is said to be easy to transport so that it can be used directly in apartments during the day and night.

Eine vergleichbare Vorrichtung ist aus DE-U-86 01 005 bekannt. Diese zeigt eine Vorrichtung zum Trocknen von Estrich nach Wasserschäden, wobei in einem Trocknergehäuse ein von einem Einlaß zu einem Auslaß führender Luftkanal vorgesehen ist, der zumindest zwei Wärmetauscher enthält. An dem Auslaß des Luftkanales ist ein Radialgebläse montiert und gegebenenfalls kann zusätzlich noch ein weiteres Gebläse zu Erzeugung eines geringen Druckes vorgesehen sein. Diese Gebläse müssen dabei auch das Ansaugen bewirken.A comparable device is known from DE-U-86 01 005. This shows a device for drying screed Water damage, an air duct leading from an inlet to an outlet being provided in a dryer housing and containing at least two heat exchangers. A radial blower is mounted at the outlet of the air duct and, if necessary, a further blower can also be provided to generate a low pressure. These blowers must also cause suction.

Beide Vorrichtungen sind deshalb nur zum Entfeuchten von vergleichsweise kleineren auszutrocknenden Objekten geeignet.Both devices are therefore only suitable for dehumidifying relatively small objects to be dried out.

Bei der Vorrichtung gern. DE-A-38 15 161 wird zwar durch die Unterbringung beider Gebläse in demselben Gehäuse der Transport erleichtert, jedoch ist durch den Anschluß eines zusätzlichen Lufttrockners an das Sauggebläse sowie der mit dem Estrich verbundenen Schläuche an die Anschlußstutzen der Gebläse mit dem Aufbau dieser Vorrichtung ein Arbeitsaufwand verbunden und innerhalb der Räume, in denen die Vorrichtung aufgebaut wird, auch ein entsprechender Platzbedarf erforderlich.With the device gladly. DE-A-38 15 161 is facilitated by the accommodation of both fans in the same housing, but the connection of an additional air dryer to the suction fan and the hoses connected to the screed to the connecting piece of the fan with the structure of this device Work associated and within the rooms in which the device is installed, a corresponding space requirement is required.

Bei der Lösung gern. DE-U-86 01 005 kann nur eine vergleichsweise geringe Trocknungsleistung erzielt werden, weil die feuchte Luft nicht aus der zu trocknenden Dämmschicht oder dem zu trocknenden Hohlraum abgesaugt wird, denn ein Verdichter zum Absaugen der feuchten Luft aus der Dämmschicht oder dem Hohlraum fehlt bei dieser Vorrichtung.Happy with the solution. DE-U-86 01 005 can only achieve a comparatively low drying performance because the moist air is not extracted from the insulating layer or cavity to be dried, because a compressor for extracting the moist air from the insulating layer or the cavity is missing this device.

Es besteht deshalb die Aufgabe, eine Vorrichtung der gattungsgemäßen Art zu schaffen, mit der wahlweise sowohl großflächige als auch bloß kleine Objekte zu entfeuchten sind, und bei der nur ein geringer Aufwand zum Transport und Aufbau erforderlich ist.There is therefore the task of creating a device of the generic type with which both large-area and merely small objects can be dehumidified, and in which only a small outlay is required for transport and assembly.

Diese Aufgabe wird bei einer Vorrichtung gem. dem Oberbegriff des Patentanspruches 1 mit den Merkmalen und Maßnahmen des kennzeichnenden Teiles des Patentanspruches 1 gelöst.This task is according to a device. the preamble of claim 1 with the features and measures of the characterizing part of claim 1 solved.

Durch die Verwendung mehrerer Druck- und Saugförderer hat die erfindungsgemäße Vorrichtung eine ausreichende Leistung, um auch großflächige Objekte sanieren zu können. Durch Zu- und Abschalten einzelner Verdichter kann das zirkulierende Luft-Volumen an die Größe des zu entfeuchtenden Objektes angepaßt werden, so daß auch bloß kleine Objekte mit der erfindungsgemäßen Vorrichtung entfeuchtet werden können. Dabei sind die Druckförderer, die Saugförderer und auch die Luft-Trockner auf dem gemeinsamen transportablen Gestell bzw. in dem gemeinsamen Gehäuse untergebracht und müssen lediglich über Druck- und Saugleitungen mit der mittels Trockenluft zu entfeuchtenden Dämmschicht oder dergleichen verbunden werden.By using several pressure and suction conveyors, the device according to the invention has sufficient power to be able to renovate even large objects. By switching individual compressors on and off, the circulating air volume can be adapted to the size of the object to be dehumidified, so that even small objects can be dehumidified with the device according to the invention. The pressure conveyors, the suction conveyors and also the air dryers are accommodated on the common portable frame or in the common housing and only have to be connected via pressure and suction lines to the insulation layer or the like to be dehumidified by dry air.

Da die Druckförderer, die Saugförderer und die Luft-Trockner in dem gemeinsamen Gehäuse angeordnet sind, wird der Aufwand zum Transport oder Aufbau der aus verschiedenen Aggregaten bestehenden erfindungsgemäßen Vorrichtung auf ein tragbares Maß reduziert. Durch die Parallelschaltung der Druckförderer und der Saugförderer bleibt der von der Vorrichtung erzeugte Druck im Vergleich zu einer Serienschaltung etwa gleich, ohne daß sich die Brandgefahr oder der Verschleiß ihrer Geräte oder Aggregate wesentlich erhöht.Since the pressure conveyors, the suction conveyors and the air dryers are arranged in the common housing, the effort for transporting or assembling the device according to the invention consisting of various units is reduced to a portable level. Due to the parallel connection of the pressure conveyors and the suction conveyors, the pressure generated by the device remains approximately the same as compared to a series connection, without the fire risk or the wear of its devices or units increasing significantly.

Da auch ein vergleichsweise hoher Druck mit Hilfe der erfindungsgemäßen Vorrichtung erzeugt werden kann, kann die Trockenluft und die mit Feuchtigkeit angereicherte Luft über verhältnismäßig lange Luftschläuche von und zur Vorrichtung transportiert werden. Dies hat den Vorteil, daß die Vorrichtung außerhalb des zu sanierenden Gebäudes aufgestellt und lediglich die Luftschläuche in das Gebäudeinnere geführt werden müssen. Somit können die Räume praktisch ohne Geräusch- und Wärmebeeinträchtigung und ohne Platzverbrauch für die Trocknungsgeräte praktisch ungehindert weiterbenutzt werden.Since a comparatively high pressure can also be generated with the device according to the invention, the dry air and the air enriched with moisture can be transported to and from the device via relatively long air hoses. This has the advantage that the device has to be installed outside the building to be renovated and only the air hoses have to be guided into the interior of the building. Thus, the rooms can be practically noiseless and Impairment of heat and without using up space for the drying devices can be used practically unhindered.

Durch das Abteilen der Druckförderer, der Saugförderer und der Luft-Trockner in voneinander abgeteilten Gehäuse-Kammern können die Gewichtskräfte innerhalb des Gehäuses bestmöglich verteilt und dennoch ein hoher Luftdurchsatz erzielt werden. Außerdem ist es auf einfache Weise möglich, durch die Abteilung der Aggregate die Verbindung beispielsweise zwischen den Luft-Trocknern und den Druckförderern von der Umgebung hermetisch abzutrennen.By dividing the pressure conveyors, the suction conveyors and the air dryers into separate housing chambers, the weight forces can be optimally distributed within the housing and a high air throughput can nevertheless be achieved. It is also possible in a simple manner to hermetically separate the connection, for example between the air dryers and the pressure conveyors, from the environment by the department of the units.

Dabei ist es zweckmäßig, wenn ein Stromerzeuger auf oder in dem gemeinsamen Gestell oder Gehäuse zur Stromversorgung der Verdichter und ggf. auch der Luft-Trockner vorgesehen ist. So kann der Standort der erfindungsgemäßen Vorrichtung außerhalb des zu sanierenden Gebäudes ohne Rücksicht auf eine externe Stromquelle gewählt werden.It is expedient if a power generator is provided on or in the common frame or housing for the power supply of the compressors and possibly also the air dryer. Thus, the location of the device according to the invention can be selected outside the building to be renovated, regardless of an external power source.

Vorteilhaft ist es, wenn die Druckförderer, die Saugförderer, die Luft-Trockner und ggf. der Stromerzeuger in einem gemeinsamen, schallgedämmten transportablen Gehäuse untergebracht sind und der Stromerzeuger in einer abgeteilten Gehäuse-Kammer angeordnet ist. Dadurch wird die Verteilung der Gewichtskräfte des transportablen Gehäuses begünstigt.It is advantageous if the pressure conveyors, the suction conveyors, the air dryers and, if applicable, the power generator are accommodated in a common, sound-insulated portable housing and the power generator is arranged in a separate housing chamber. This favors the distribution of the weight of the portable housing.

Um die Wartungsfreundlichkeit der erfindungsgemäßen Vorrichtung zu begünstigen, ist es zweckmäßig, wenn die einzelnen Gehäuse-Kammern an der Gehäuseaußenseite angeordnete Zugangsöffnungen aufweisen.In order to promote the ease of maintenance of the device according to the invention, it is expedient if the individual housing chambers have access openings arranged on the outside of the housing.

Um einerseits die zum Entfeuchten benötigte Luft aus der Atmosphäre ansaugen und andererseits auch wieder die mit Feuchtigkeit angereicherte Luft in die Atmosphäre abgeben zu können, ist es zweckmäßig, wenn die Kammer der Luft-Trockner und die Kammer der Saugförderer jeweils zumindest eine nach außen führende Luftöffnung aufweisen.In order on the one hand to suck in the air required for dehumidification from the atmosphere and on the other hand to be able to release the air enriched with moisture into the atmosphere again, it is useful if the chamber of the air dryer and the chamber of the suction conveyor each have at least one air opening leading to the outside exhibit.

Das Aufstellung und die einfache Bedienbarkeit der erfindungsgemäßen Vorrichtung wird begünstigt, wenn die Luftausgänge der Druckförderer und die Lufteingänge der Saugförderer über vorzugsweise aufwickelbare Luftschläuche mit der zu entfeuchtenden Dämmschicht oder dem Hohlraum verbindbar sind, und wenn zweckmäßigerweise die Wickeltrommeln dieser Schläuche ebenfalls im oder an dem Gehäuse gelagert sind.The installation and ease of use of the device according to the invention is favored if the air outlets of the pressure conveyors and the air inlets of the suction conveyors can be connected to the insulating layer or the cavity to be dehumidified via air hoses that can preferably be wound up, and if the winding drums of these hoses are also expediently in or on the housing are stored.

Um den Luftdurchsatz in den Druckförderern und in den Saugförderern gut aneinander angleichen zu können und um einen Überdruck in der Trittschalldämmung eines Fußbodens oder dergleichen zu vermeiden, ist es zweckmäßig, wenn die einzelnen Verdichter der Vorrichtung etwa dasselbe Luftfördervolumen pro Zeiteinheit leisten. Dabei ist es vorteilhaft, wenn eine Steuerung zumindest für die Verdichter vorgesehen ist, die bei einer gewünschten Anzahl in Betrieb zu nehmender Druckförderer oder Saugförderer die gleiche Anzahl von Saug- oder Druckförderern einschaltet.In order to be able to match the air throughput in the pressure conveyors and in the suction conveyors well to one another and to avoid excess pressure in the impact sound insulation of a floor or the like, it is expedient if the individual compressors of the device provide approximately the same air delivery volume per unit of time. It is advantageous if a controller is provided at least for the compressors, which switches on the same number of suction or pressure conveyors when a desired number of pressure conveyors or suction conveyors are put into operation.

Eine besonders vorteilhafte Ausführung gemäß der Erfindung von eigenständiger Bedeutung sieht vor, daß das Vorrichtungs-Gehäuse als Straßenfahrzeug, insbesondere als Anhänger ausgebildet ist, so daß es sehr leicht und schnell auch dann zu einem zu sanierenden Gebäude gebracht werden kann, wenn es für die Sanierung sehr großer Flächen mit entsprechend starken oder zahlreichen Maschinen bestückt ist.A particularly advantageous embodiment according to the invention of independent importance provides that the device housing is designed as a road vehicle, in particular as a trailer, so that it can be very easily and quickly brought to a building to be renovated if it is for the renovation very large areas is equipped with correspondingly strong or numerous machines.

Nachstehend ist die Erfindung mit ihren ihr als wesentlich zugehörenden Einzelheiten anhand der Zeichnungen in einem Ausführungsbeispiel noch näher beschrieben. Es zeigt in zum Teil schematisierter Darstellung:

Fig. 1
in einem Querschnitt eine Vorrichtung zum Entfeuchten von unter einer Deckschicht liegenden Dämmschichten oder Hohlräumen, wobei die Verdichter sowie die Luft-Trockner und der Stromerzeuger dieser Vorrichtung in einem gemeinsamen transportablen Gehäuse vorgesehen sind,
Fig. 2
die Vorrichtung aus Fig. 1 mit den ihr zugehörigen Aggregaten in einer perspektivischen Seitendarstellung und
Fig. 3
die vor einem teilweise zu sanierenden Gebäude aufgestellte Vorrichtung aus Fig. 1 und 2 während des Betriebes.
The invention is described in more detail below with its details that are essential to it, using the drawings in an exemplary embodiment. It shows in a partially schematic representation:
Fig. 1
in a cross-section a device for dehumidifying insulation layers or cavities lying under a cover layer, the compressors and the air dryer and the power generator of this device being provided in a common transportable housing,
Fig. 2
1 with the associated units in a perspective side view and
Fig. 3
the in front of a partially to be renovated building of Fig. 1 and 2 during operation.

In Fig. 1 ist eine Vorrichtung 1 in ihrem Querschnitt dargestellt, die zum Entfeuchten von unter einer Deckschicht liegenden Dämmschichten oder von Hohlräumen dient, wie sie beispielsweise bei Böden, Wänden, Decken oder dergleichen Gebäudeteilen vorkommen. Die Vorrichtung 1 weist sechs Verdichter auf, von denen drei als Druckförderer 2 zum Einleiten trockner Luft in die Dämmschicht oder den Hohlraum und drei weitere als Saugförderer 3 zum Absaugen der feuchten Luft aus der Dämmschicht vorgesehen sind. Auf der Ansaugseite der Druckförderer 2 sind in Richtung ihres Luftstromes drei Luft-Trockner 4 vorgeschaltet, mit deren Hilfe die zum Entfeuchten benötigte und aus der Atmosphäre entnommene Luft vor dem Eindrücken in die Dämmschicht oder den Hohlraum getrocknet wird.In Fig. 1, a device 1 is shown in its cross section, which serves to dehumidify insulation layers lying under a cover layer or of cavities, such as occur for example with floors, walls, ceilings or similar parts of buildings. The device 1 has six compressors, three of which are provided as pressure conveyors 2 for introducing dry air into the insulating layer or the cavity and three more as suction conveyors 3 for sucking out the moist air from the insulating layer. On the suction side of the pressure conveyor 2, three air dryers 4 are connected upstream in the direction of their air flow, with the aid of which the air required for dehumidification and taken from the atmosphere is dried before being pressed into the insulation layer or the cavity.

Die Druckförderer 2, die Saugförderer 3 und die Luft-Trockner 4 sind in ihrem Luftstrom jeweils parallel geschaltet. Die Druckförderer 2, die Saugförderer 3 und die Luft-Trockner 4 sind gegeneinander abgeteilt in einem gemeinsamen transportablen Gehäuse 5 befestigt, in dem zur Stromversorgung der Verdichter 2 und 3 auch ein Stromerzeuger 6 vorgesehen ist. Die einzelnen Aggregat-Gruppen sind jeweils in voneinander abgeteilten Gehäusekammern K1 bis K4 untergebracht. Durch die Abteilung dieser Kammern K1 bis K4 voneinander ist es auf einfache Weise möglich, auch die Verbindung etwa zwischen den Luft-Trocknern 4 und den Druckförderern 2 von der Umgebung hermetisch abzutrennen: Während die Kammer K3 der Luft-Trockner 4, ebenso wie die Kammer K4 der Saugförderer 3, eine nach außen führende Luftöffnung 7 aufweist, über die die zum Entfeuchten benötigte Luft aus der Atmosphäre abgesaugt werden kann, sind die Luft-Trockner 4 mit ihrem Ausgangsstutzen 8 hermetisch dicht mit der Kammer K2 verbunden, in der sich die Druckförderer 2 befinden.
Während des Betriebes der Vorrichtung 1 saugen die Druckförderer 2 in der Kammer K2 über die Ausgangsstutzen 8 der Luft-Trockner 4 die benötigte Luftmenge aus der Atmosphäre an, die über die Luftöffnung 7 der Kammer K3 in das Gehäuse 5 eindringen kann. Dabei sind die Ausgänge 9 der Druckförderer 2 über eine gemeinsame und hier das Gehäuse 5 durchziehende Druckluftleitung 10 miteinander verbunden, die zu einem in der Kammer K5 zugänglichen Druckluft-Anschlußstutzen 11 führt. Von dort wird die von den Druckförderern 2 angesaugte Trockenluft über Luftschläuche 12 in das zu entfeuchtende Dämmaterial eingedrückt.The pressure conveyor 2, the suction conveyor 3 and the air dryer 4 are connected in parallel in their air flow. The pressure conveyors 2, the suction conveyors 3 and the air dryers 4 are fastened to one another in a shared, portable housing 5 in which a power generator 6 is also provided for supplying power to the compressors 2 and 3. The individual unit groups are each housed in separate housing chambers K1 to K4. The division of these chambers K1 to K4 from one another makes it possible in a simple manner to also hermetically separate the connection, for example, between the air dryers 4 and the pressure conveyors 2 from the environment: while the chamber K3, the air dryer 4, as well as the chamber K4 of the suction conveyor 3 has an air opening 7 leading to the outside, through which the air required for dehumidification can be extracted from the atmosphere, the air dryers 4 are connected hermetically with their outlet connection 8 to the chamber K2 in which the pressure conveyors are located 2 are located.
During operation of the device 1, the pressure conveyors 2 in the chamber K2 suck in the required amount of air from the atmosphere via the outlet connection 8 of the air dryer 4, which can penetrate into the housing 5 via the air opening 7 of the chamber K3. The outputs 9 of the pressure conveyor 2 are connected to one another via a common compressed air line 10 which in this case runs through the housing 5 and which leads to a compressed air connection stub 11 accessible in the chamber K5. From there, the dry air drawn in by the pressure conveyors 2 is pressed into the insulating material to be dehumidified via air hoses 12.

Da die Lufteingänge der Druckförderer 2 nicht unmittelbar mit den Ausgangsstutzen 8 der Luft-Trockner 4 verbunden sind, sondern die benötigte Luftmenge über ihre hermetisch dichte Kammer K2 ansaugen, können beliebig einzelne Geräte der Druckförderer 2 mit einzelnen der Luft-Trockner 4 betrieben werden.Since the air inlets of the pressure conveyor 2 are not directly connected to the outlet connection 8 of the air dryer 4, but instead suck in the required amount of air via their hermetically sealed chamber K2, any individual devices of the pressure conveyor 2 can be operated with individual ones of the air dryer 4.

Mittels der Druckförderer 2 wird die Trockenluft in die Dämmschicht, die sich regelmäßig unter einem Estrich oder dergleichen Deckschicht befindet, über randseitig an der Deckschicht meist vorhandene Dehnfugen oder über auch extra in die Deckschicht eingebrachte Bohrungen eingedrückt. Um den zu sanierenden Raum und die darin befindlichen Möbel nicht unnötig einer erhöhten Raumtemperatur oder -feuchtigkeit auszusetzen, wird anschließend die durch das Dämmaterial hindurchgepreßte und nun mit Feuchtigkeit angereicherte Luft wiederum über an anderer Stelle vorhandene oder vorbereitete Dehnfugen oder Bohrungen abgesaugt.By means of the pressure conveyors 2, the dry air is pressed into the insulation layer, which is regularly located under a screed or similar top layer, via expansion joints that are usually present on the edge of the top layer, or also through holes drilled in the top layer. In order not to unnecessarily expose the room to be renovated and the furniture in it to an increased room temperature or humidity, the air that is pressed through the insulating material and is now enriched with moisture is then sucked off again via expansion joints or bores that are present or prepared elsewhere.

Das Absaugen des mit Feuchtigkeit angereichten Luftstromes erfolgt durch die Saugförderer 3, die in der Kammer K4 der Vorrichtung 1 vorgesehen sind. Zu diesem Zweck werden die Saugförderer 3 ebenfalls über Luftschläuche 12 mit der entsprechenden Dehnfuge oder Bohrung des zu sanierenden Raumes verbunden, wobei die Luftschläuche 12 an den von der Kammer K5 her zugänglichen Saugluft-Anschlußstutzen 13 anschließbar sind.
Auch die Saugförderer 3 in der Kammer K4 sind parallel zueinander geschaltet; während ihre Saug-Eingänge 14 hermetisch dicht mit dem Saugluft-Anschlußstutzen 13 verbunden sind, führen ihre Ausgänge 15 lediglich in das Innere der Kammer K4, von wo sie über die dort vorgesehene Luftöffnung 7 in die Atmosphäre entweichen können.The suction of the air flow enriched with moisture takes place through the suction conveyors 3, which are provided in the chamber K4 of the device 1. For this purpose, the suction conveyor 3 are also connected via air hoses 12 to the corresponding expansion joint or bore of the room to be renovated, the air hoses 12 being connectable to the suction air connection stub 13 accessible from the chamber K5.
The suction conveyors 3 in the chamber K4 are also connected in parallel to one another; while their suction inputs 14 are hermetically sealed to the suction air connecting piece 13, their outputs 15 only lead into the interior of the chamber K4, from where they can escape into the atmosphere via the air opening 7 provided there.

Wie die Figuren 1 bis 3 zeigen, weisen die einzelnen, den Stromerzeuger 6, die Druckförderer 2, die Saugförderer 3 sowie die Luft-Trockner 4 enthaltenden Kammern K1 bis K4 und auch die mit den Anschlußstutzen 11 und 13 der Verdichter versehene Kammer K5 des Gehäuses 5 jeweils eine Zugangsöffnung 16 auf, die jeweils über eine Tür verschließbar ist und ein Betreten der Kammern K1 bis K5 ermöglicht.As FIGS. 1 to 3 show, the individual chambers K1 to K4 containing the power generator 6, the pressure conveyor 2, the suction conveyor 3 and the air dryer 4 and also the chamber K5 of the housing provided with the connecting pieces 11 and 13 of the compressor 5 each have an access opening 16, each of which can be closed via a door and allows entry into the chambers K1 to K5.

In Figur 2 ist erkennbar, daß die Luftausgänge der Druckförderer 2 und die Lufteingänge der Saugförderer 3 über aufwickelbare Luftschläuche 12 mit der zu entfeuchtenden Dämmschicht oder dem Hohlraum verbindbar sind, deren Wickeltrommeln 17 im Inneren der Kammer K5 am Gehäuse 5 gelagert sind. Aus Figur 2 wird deutlich, daß das Vorrichtungsgehäuse 5 als straßentauglicher zweiachsiger Anhänger ausgebildet ist, der über eine Anhängerkupplung 18 an ein hier nicht weiter dargestelltes Transportfahrzeug angekuppelt werden kann.In Figure 2 it can be seen that the air outlets of the pressure conveyor 2 and the air inlets of the suction conveyor 3 can be connected via windable air hoses 12 to the insulating layer or cavity to be dehumidified, the winding drums 17 of which are mounted on the housing 5 inside the chamber K5. From Figure 2 it is clear that the device housing 5 is designed as a roadworthy two-axle trailer, which can be coupled via a trailer coupling 18 to a transport vehicle, not shown here.

Um ein Überdruck in der zu entfeuchtenden Dämmschicht zu vermeiden und um das Fördervolumen der in Betrieb befindlichen Druckförderer 2 an das Fördervolumen der Saugförderer 3 anpassen zu können weisen die einzelnen Verdichter 2 und 3 etwa dasselbe Luftfördervolumen pro Zeiteinheit auf. Durch Inbetriebnahme von nur ein oder zwei Druck- und Saugförderern 2, 3 kann die Leistung der Vorrichtung 1 an die Größe des zu entfeuchtenden Objektes angepaßt werden. Dabei ist eine in Figur 1 und 2 sichtbare Steuerung 19 vorgesehen, die bei einer gewünschten Anzahl in Betrieb zu nehmender Druckförderer 2 die gleiche Anzahl von Saugförderern 3 einschaltet.In order to avoid excess pressure in the insulating layer to be dehumidified and to be able to adapt the delivery volume of the pressure conveyors 2 in operation to the delivery volume of the suction conveyor 3, the individual compressors 2 and 3 have approximately the same air delivery volume per unit of time. By commissioning only one or two pressure and suction conveyors 2, 3, the performance of the device 1 can be adapted to the size of the object to be dehumidified. A control 19 visible in FIGS. 1 and 2 is provided, which switches on the same number of suction conveyors 3 when a desired number of pressure conveyors 2 are put into operation.

Bei der hier dargestellten Vorrichtung 1 sollen die als Luft-Trockner vorgesehenen Kondenstrockungsanlagen eine Gesamtentfeuchtungsleistung von tausend Litern pro Tag bei 85 % RF und 25 ° C haben. Die von den Druckförderern 2 aus der Atmosphäre angesaugte Luft wird durch die Kondenstrocknungsanlagen auf 40 % RF getrocknet, um anschließend als Trockenluft in das zu entfeuchtende Dämmaterial eingedrückt zu werden. In der Kammer K2 stehen als Druckförderer 2 dienende Überdruckanlagen mit einer Gesamtluftförderleistung von 23 cbm/min. zur Verfügung, die parallel zueinander geschaltet sind, so daß je nach Erfordernis alle auf einmal in Funktion genommen werden können oder nur ein Druckförderer oder zwei. Die hier dargestellte Vorrichtung 1 hat somit ein Luftfördervolumen, welches für eine technische Trockung im Dämmschichtbereich bis ca. 70 qm Grundfläche ausreichend ist. Durch das Parallelschalten der Verdichter kann die als Trocknungsmobil ausgebildete Vorrichtung 1 bis zu 300 Meter vom eigentlich auszutrockenen Objekt entfernt aufgestellt werden, wobei diese Distanz ohne weiteres mit Hilfe der Luftschläuche 12 überwunden wird.In the device 1 shown here, the condenser drying systems provided as air dryers should have a total dehumidification capacity of 1,000 liters per day at 85% RH and 25 ° C. The air drawn in from the atmosphere by the pressure conveyors 2 is dried to 40% RH by the condenser drying systems, in order to then be pressed into the insulating material to be dehumidified as dry air. In the chamber K2 there are 2 overpressure systems serving as pressure conveyors with a total air delivery rate of 23 cbm / min. are available, which are connected in parallel to each other, so that, depending on requirements, all can be put into operation at once can be or just a pressure conveyor or two. The device 1 shown here thus has an air delivery volume which is sufficient for technical drying in the insulation layer area up to approximately 70 square meters of floor space. By connecting the compressors in parallel, the device 1 designed as a mobile drying device can be placed up to 300 meters from the object to be dried out, this distance being easily overcome with the aid of the air hoses 12.

Wie Figur 3 zeigt, ist es bei der erfindungsgemäßen Vorrichtung 1 nun möglich, die erforderlichen Maschinen und Vorrichtungs-Aggregate außerhalb des Gebäudes an einer geeigneten Stelle zu plazieren, so daß die oft schwierige Unterbringung der Aggregate innerhalb des Gebäudes an geeigneter Stelle entfällt und die Geräuschentwicklung innerhalb des eventuell noch schallgedämmte Gehäuses so gedämpft werden kann, daß sie die Bewohner oder Benutzer des Gebäudes nicht stört. Dadurch wird die Installation für den Betrieb der Vorrichtung 1 erheblich vereinfacht, weil lediglich das Gehäuse 5 in dem Bereich des zu sanierenden Gebäudes gebracht und die entsprechenden Schlauchleitungen 12 verlegt werden müssen. Da das Gehäuse 5 der Vorrichtung als straßentauglicher Anhänger ausgebildet und auch mit einer Anhängerkupplung 18 versehen ist, kann die Vorrichtung 1 sehr leicht und schnell auch dann zu dem vorgesehenen Aufstellungsort transportiert werden, wenn die Vorrichtung 1 für die Sanierung sehr großer Flächen mit entsprechend starken oder zahlreichen Maschinen und Aggregaten bestückt ist. Durch die Abteilung der Aggregat-Gruppen im Gehäuse 5 mittels der das Gehäuse 5 in Kammern K1 bis K5 unterteilenden Trennwände 20 lassen sich die Gewichtskräfte innerhalb des Gehäuses oder Anhängers bestmöglich verteilen und dennoch ein hoher Luftdurchlaß erzielen, so daß unter Umständen die Leitungen auch verzweigt werden können und trotzdem jeder einzelne Leitungsdrang mit genügend Luft einerseits und auch genügend hohem Druck andererseits beaufschlagt werden kann.
Da die Vorrichtung 1 auch einen eigenen, ebenfalls im Gehäuse 5 vorgesehenen Stromerzeuger 6 hat, kann die Trocknungseinheit auch dort einsetzbar gemacht werden, wo keine genügend hohen Stromstärken zur Verfügung stehen, um die elektrischen Antriebe der Verdichter zu versorgen. Dabei wird der Stromerzeuger 6 mit einem eigenen vorzugsweise als Verbrennungsmotor ausgebildeten Antriebsmotor betrieben.As FIG. 3 shows, it is now possible in the device 1 according to the invention to place the necessary machine and device units outside the building at a suitable location, so that the often difficult placement of the units inside the building at a suitable location is eliminated and the noise level is reduced can be dampened within the possibly still insulated housing so that it does not disturb the occupants or users of the building. This considerably simplifies the installation for the operation of the device 1 because only the housing 5 has to be brought into the area of the building to be renovated and the corresponding hose lines 12 have to be laid. Since the housing 5 of the device is designed as a roadworthy trailer and is also provided with a trailer coupling 18, the device 1 can be transported very easily and quickly even to the intended installation site if the device 1 for the renovation of very large areas with correspondingly strong or numerous machines and units. By dividing the aggregate groups in the housing 5 by means of the dividing walls 20 dividing the housing 5 into chambers K1 to K5, the weight forces can be optimally distributed within the housing or trailer and nevertheless achieve a high air passage, so that the lines can also be branched under certain circumstances can and still everyone single line pressure with enough air on the one hand and also high enough pressure can be applied.
Since the device 1 also has its own power generator 6, which is also provided in the housing 5, the drying unit can also be used where there are no sufficiently high currents available to supply the electrical drives of the compressors. The power generator 6 is operated with its own drive motor, which is preferably designed as an internal combustion engine.

Somit stellt die Vorrichtung 1 eine mobile Trockungseinheit dar, die außerhalb eines zu sanierenden Gebäudes und somit ohne Platzbedarf im Inneren des Gebäudes und ohne Beeinträchtigung der im Gebäudeinneren befindlichen Einrichtungsgegenstände schnell und einfach aufgestellt werden kann und sogar unabhängig von der Stromversorgung ist.The device 1 thus represents a mobile drying unit which can be quickly and easily set up outside of a building to be renovated and thus without taking up space inside the building and without impairing the furnishings inside the building and is even independent of the power supply.

Claims (9)

  1. A device (1) for the dehumidification of covered insulation or cavities, particularly in floors, walls, ceilings or similar elements of construction, including at least two compressors, one serving as a pressure conveyor (2) for introducing dry air into the insulation or cavity and the other serving as a suction conveyor (3) for extracting humid air from the insulation or cavity, said compressors being provided in a common housing (5), characterized in that at least two pressure conveyors (2) parallel-connected in their air current are connected to a corresponding number of likewise parallel-connected air driers (4) and that just as many, again parallel-connected suction conveyors (3) are provided, said pressure conveyors (2), said suction conveyors (3) and also said air driers (4) being partitioned off from one another in partitioned compartments (K2 to K4) of the common housing (5) and at least the connection between the air driers (4) and the pressure conveyors (2) is sealed off from the surroundings, and that each of the outlet connections (8) of the air driers (4) leads into the hermetically sealed compartment (K2) of the pressure conveyors (2) which take in the air required from said compartment (K2).
  2. A device as claimed in claim 1, characterized in that an electric generator (6) is provided on or in the common stand or housing (5) and serves for the power supply of the compressors (2, 3) and possibly also of the air driers (4).
  3. A device as claimed in claim 1 or claim 2, characterized in that the pressure conveyors (2), the suction conveyors (3), the air driers (4) and the electric generator (6) are accommodated in a common, sound-insulated, mobile housing (5) and the electric generator (6) is arranged in a partitioned compartment (K1) of the housing.
  4. A device as claimed in any one of claims 1 to 3, characterized in that the individual compartments (K1 to K5) of the housing have access openings (16) arranged at the outside of the housing.
  5. A device as claimed in any one of claims 1 to 4, characterized in that the compartment (K3) of the air driers (4) and the compartment (K4) of the suction conveyors (3) in each case have at least one air opening (7) leading outwards.
  6. A device as claimed in any one of claims 1 to 5, characterized in that the air outlets (9) of the pressure conveyors (2) and the air inlets (14) of the suction conveyors (3) are connectable to the insulation or cavity to be dehumidified via air hoses (12), preferably ones capable of being wound up, and that the winding drums (17) of said hoses (12) are suitably also mounted in or on the housing (5).
  7. An apparatus as claimed in any one of claims 1 to 6, characterized in that the individual compressors (2, 3) of the device (1) have approximately the same capacity per unit of time.
  8. A device as claimed in any one of claims 1 to 7, characterized in that a control (19) is provided at least for the compressors (2, 3) and for a wanted number of pressure conveyors (2) or suction conveyors (3) to be put into operation starts the same number of suction or pressure conveyors.
  9. A device as claimed in any one of claims 1 to 8, characterized in that the housing (5) of the device takes the form of a road vehicle, particularly a trailer.
EP91118458A 1990-12-14 1991-10-30 Device for the dehumidification of covered insulation or cavities Expired - Lifetime EP0490073B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4039914A DE4039914C2 (en) 1990-12-14 1990-12-14 Device for dehumidifying insulation layers or voids lying under a cover layer
DE4039914 1990-12-14

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EP0490073A1 EP0490073A1 (en) 1992-06-17
EP0490073B1 true EP0490073B1 (en) 1995-05-31

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EP (1) EP0490073B1 (en)
AT (1) ATE123320T1 (en)
CZ (1) CZ280539B6 (en)
DE (2) DE4039914C2 (en)
DK (1) DK0490073T3 (en)
ES (1) ES2075300T3 (en)
HU (1) HU212290B (en)
PL (1) PL167860B1 (en)
PT (1) PT99773B (en)
RU (1) RU2025561C1 (en)
SK (1) SK278894B6 (en)

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US7748172B2 (en) 2003-02-13 2010-07-06 Martin Marietta Materials, IInc. Insulated cargo containers

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DE4427245A1 (en) * 1994-08-03 1996-02-08 Prozesautomation Kohler Gmbh System for drying building parts and insulating layers
DE29606751U1 (en) * 1996-04-13 1996-07-04 TWG Trockentechnik-Weiterentwicklungsgesellschaft mbH, 22457 Hamburg Drying device
AT408112B (en) * 1999-08-10 2001-09-25 Sigmund Gerda Dr METHOD FOR DEHUMIDIFYING AND DESTRUCTING SALT REDUCTION OF A MASONRY
US6457258B1 (en) * 2001-03-06 2002-10-01 Charles S. Cressy Drying assembly and method of drying for a flooded enclosed space
US6662467B2 (en) * 2001-03-06 2003-12-16 Charles S. Cressy Drying assembly and method of drying for a flooded enclosed elevated space
SE523473C2 (en) * 2001-08-17 2004-04-20 Corroventa Avfuktning Ab Method and apparatus for drying a water damaged building
AT8768U1 (en) 2005-02-17 2006-12-15 Paschinger Eduard MOBILE DRYER
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US8713874B2 (en) 2009-06-08 2014-05-06 Action Extraction, Inc. Wall restoration system and method

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DE3306044A1 (en) * 1983-02-22 1984-08-23 Getro Gebäudetrocknungs-GmbH, 4056 Schwalmtal Process for drying materials
DE8601005U1 (en) * 1986-01-17 1986-02-27 Rose & Meyer Gesellschaft für Brandschadensanierung mbH, 5000 Köln Device for drying screed after water damage
DE3632424A1 (en) * 1986-09-24 1988-04-07 Dieter Dziggel Process for removing moisture from insulating layers or cavities located beneath a top layer, and apparatus for carrying out the process
DE3815161C2 (en) * 1988-05-04 1996-11-28 Getro Gebaeudetrocknungs Gmbh Device for drying insulating materials below a screed

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US7748172B2 (en) 2003-02-13 2010-07-06 Martin Marietta Materials, IInc. Insulated cargo containers

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HUT67221A (en) 1995-03-28
DE4039914A1 (en) 1992-06-17
CS379291A3 (en) 1992-10-14
PL167860B1 (en) 1995-11-30
HU212290B (en) 1996-05-28
PT99773A (en) 1993-11-30
PL292742A1 (en) 1992-08-10
SK278894B6 (en) 1998-04-08
DE59105623D1 (en) 1995-07-06
ATE123320T1 (en) 1995-06-15
DK0490073T3 (en) 1995-11-20
CZ280539B6 (en) 1996-02-14
HU913938D0 (en) 1992-04-28
RU2025561C1 (en) 1994-12-30
PT99773B (en) 1999-02-26
ES2075300T3 (en) 1995-10-01
DE4039914C2 (en) 1995-07-13
EP0490073A1 (en) 1992-06-17

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