EP0503139B1 - Compressor for a silo - Google Patents

Compressor for a silo Download PDF

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Publication number
EP0503139B1
EP0503139B1 EP91119236A EP91119236A EP0503139B1 EP 0503139 B1 EP0503139 B1 EP 0503139B1 EP 91119236 A EP91119236 A EP 91119236A EP 91119236 A EP91119236 A EP 91119236A EP 0503139 B1 EP0503139 B1 EP 0503139B1
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EP
European Patent Office
Prior art keywords
compressor
air
cooling air
enclosure
cooling
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Expired - Lifetime
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EP91119236A
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German (de)
French (fr)
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EP0503139A2 (en
EP0503139A3 (en
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Peter Wilms
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/066—Cooling by ventilation

Definitions

  • the invention relates to a device for use on a blowable media transporting silo vehicle, the device being equipped with a driven compressor for generating conveying air for the blowable media and the compressor with the compressor cooling fan associated therewith within one of cooling air flow encapsulation is arranged.
  • EP-0 050 770-B1 shows a compressor driven by a diesel engine with a cooling air blower and an encapsulation, the overall device being extremely extensive and the compressor not being designed as an oil-free compressor as shown here.
  • the object of the invention is therefore to provide a solution in which the size differences of the units and drive differences which can be carried on trucks are taken into account and the advantages of optimal cooling with simultaneous optimal sound absorption are combined and made possible.
  • this object is achieved according to the invention in that, in addition to the compressor cooling air blower, a further blower acting on a compressed air cooler for cooling the conveying air is arranged within the encapsulation, this further blower, the compressed air cooler, and the compressor - Have cooling air blowers under-Arbitrary air ducts.
  • the invention makes it possible to achieve a very compact unit construction that can be carried by silo vehicles, with sound insulation as well as the possibility of using oil-free compressors, since the temperatures that occur in particular are without Problems can be mastered if different ventilation ducts are used, in such a way that different cooling parameters for the compressor to be cooled, on the one hand, and for the compressed air cooler, on the other hand, can thus be more easily maintained.
  • the separation of the air ducts also achieves a compact design, since they can also be arranged in opposite directions to one another within the common encapsulation, but separately in the flow path.
  • the drive can be provided in a common encapsulation, as in the generic state of the art.
  • An external drive for example of a power take-off of the transmission of the vehicle, can also be provided here.
  • the compressed air heat exchanger as an air cooler forms an end face of the encapsulation with an internal cooling air blower and directly assigned lateral outflow channels for the corresponding cooling air, alternatively or jointly it can also be provided that the compressor cooling air blower sucks the cooling air out of a floor suction opening. wherein after overflowing the compressor, the other end wall of the encapsulation with an exhaust outlet is provided.
  • the encapsulation is provided with a further bottom suction opening for sucking in the compressed air, which also serves the purpose of not preheating the compressed air unnecessarily, since the compression heats it up anyway.
  • the invention also provides that a two-way silencer for the compressed air is accommodated within the encapsulation.
  • FIG. 1 schematically shows three flow paths of air, such as the air which flows through the device, generally designated 1.
  • the solid, arrowed line 2 should represent the eg of the compressed air
  • the double-dashed dotted line 3 shows the flow path of the cooling air through the compressed air heat exchanger designated by 4
  • the dashed dotted lines 5 show the path of the compressor cooling air via the compressor labeled 6 and one Flanged motor 7 provided there.
  • a fan wheel 8 assigned to the compressor ventilation and a fan wheel 9 assigned to the compressed air cooler 4 are provided on a shaft in the example of FIG. 1, with a deflection baffle between the two fan wheels, through which the shaft denoted by 10 is located 11 is provided for deflecting the cooling air flow 3.
  • the construction is shown in a slightly different representation.
  • the compressor 6 with the fan shaft 10 is accommodated within an encapsulation 12, a pulley 12 being indicated on the shaft 10, which acts on a secondary drive of the motor is.
  • the shaft 10 carries both fan wheels 8 and 9 with the interposition of a reduction gear 10a.
  • the cooling air flow 3 drawn in by the fan wheel 9 through the compressed air cooler 4 is discharged laterally out of the encapsulation 12 via baffles 11a, as is indicated in FIG. 2.
  • the compressed air itself is sucked in through a bottom suction opening 13, compressed by the compressor 6 and then passed to the heat exchanger 4 via a muffler 14, which is still inside the encapsulation, and finally at the end of the compressed air line, which is denoted by 15, for the consumer to be available chilled.
  • cooling air is drawn in by the fan wheel 8 through a bottom opening 16, passed through the compressor and passed out again via an exhaust air outlet opening 17.
  • the described embodiment of the invention can be modified in many ways without departing from the basic idea.
  • the invention is not limited to the particular spatial arrangement of the units with respect to one another, although the one selected here is particularly expedient and is suitable for being accommodated within a common soundproof encapsulation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Sewage (AREA)

Abstract

By means of a device on a silo vehicle with driven compressor for generating conveying air for the transported, blowable media, the compressor being arranged as an oil-free compressor inside an encapsulation with cooling air flowing through it, it is intended to create a solution in which account is taken of the differences in size of the units which can be carried on trucks and of the differences in drive and the advantages of optimum cooling are simultaneously combined with optimum silencing and realised. This is achieved in that in addition to the cooling fan (8) for the compressor (6) a further fan (9) is provided which acts on a compressed air cooler (4). <IMAGE>

Description

Die Erfindung richtet sich auf eine Vorrichtung zum Einsatz auf einem verblasbare Medien transportierenden Silo-Fahrzeug, wobei die Vorrichtung mit einem angetriebenen Kompressor zur Erzeugung von Förderluft für die verblasbaren Medien ausgerüstet ist und wobei der Kompressor mit dem ihm zugeordneten Kompressor-Kühlluftgebläse innerhalb einer von Kühlluft durchströmten Kapselung angeordnet ist.The invention relates to a device for use on a blowable media transporting silo vehicle, the device being equipped with a driven compressor for generating conveying air for the blowable media and the compressor with the compressor cooling fan associated therewith within one of cooling air flow encapsulation is arranged.

Durch die DE-38 31 703-C1 des Anmelders ist ein entsprechender, ölfreier Kompressor bekannt, bei dem der Kompressor selbst eine Lüftungseinrichtung und das Antriebsaggregat innerhalb einer als Kühlkanal ausgebildeten Kapselung untergebracht ist. Dieser bekannte Kompressor hat gegenüber herkömmlichen Konstruktionen bereit wesentliche Vorteile, so ist er insbesondere sehr geräuscharm und damit ungewöhnlich umweltfreundlich.From DE-38 31 703-C1 of the applicant a corresponding, oil-free compressor is known, in which the compressor itself is a ventilation device and the drive unit is housed within an encapsulation designed as a cooling channel. This known compressor already has significant advantages over conventional constructions, in particular it is very quiet and therefore unusually environmentally friendly.

Ein von einem Dieselmotor getriebener Kompressor mit Kühlluftgebläse und einer Kapselung, wobei die Gesamteinrichtung ausgesprochen umfangreich ist und der Kompressor nicht wie hier als ölfreier Kompressor gestaltet ist, zeigt die EP-0 050 770-B1.EP-0 050 770-B1 shows a compressor driven by a diesel engine with a cooling air blower and an encapsulation, the overall device being extremely extensive and the compressor not being designed as an oil-free compressor as shown here.

Aus der als Abstract veröffentlichten Publikation JP-A-1 313 694, Patent Abstracts of Japan Vol. 1, Nr. 113 (M-944), 02. März 1990, ist die Miniaturisierung eines Kühlers bei gleichzeitiger Schallminderung bekannt, wobei dort in einer Kapselung ein Motor mit einem Kühlgebläse vorgesehen ist und, getrennt von diesem Motor aber einachsig dazu, hinter einer Trennwand ein Warmluftgebläse, das von außerhalb des Gehäuses durch einen Ölkühler und einen Nachkühler hindurch Luft ansaugt und über einen gemeinsamen Kanal diese angesaugte Kühlluft und die Motorluft gemischt nach außen bläst. Durch den gemeinsamen Abluftkanal der Warmluft ist der mögliche Volumenstrom der geförderten Kühlluft beschränkt.From the publication JP-A-1 313 694, Patent Abstracts of Japan Vol. 1, No. 113 (M-944), March 2, 1990, published as an abstract, the miniaturization of a cooler with simultaneous noise reduction is known Encapsulation of a motor with a cooling fan is provided and, separate from this motor but uniaxial to it, behind a partition there is a warm air fan that draws in air from outside the housing through an oil cooler and an aftercooler and mixes this sucked-in cooling air and the motor air via a common duct blows outwards. The possible volume flow of the conveyed cooling air is limited by the common exhaust air duct of the warm air.

Besondere Probleme bestehen bei Kompressoren für Silo-Fahrzeuge, da hier nicht nur der Kompressor selbst gekühlt werden muß, um die Abgabetemperatur der Förderluft möglichst niedrig zu halten, sondern auch die Förderluft selbst. Damit besteht ein Ziel der Erfindung darin, die notwendigen Kühlparameter insbesondere für die Förderluft einzuhalten, wobei beachtet werden muß, daß mit höheren Leistungen in der Regel auch höhere Temperaturen verbunden sind, wobei auch Probleme des Antriebes in einer gemeinsamen Kapselung zu beachten sind.There are particular problems with compressors for silo vehicles, since not only the compressor itself has to be cooled in order to keep the discharge temperature of the conveying air as low as possible, but also the conveying air itself. It is therefore an object of the invention to provide the necessary cooling parameters, in particular for The conveying air must be observed, whereby it must be borne in mind that higher temperatures generally also involve higher temperatures, whereby problems of the drive in a common encapsulation must also be taken into account.

Aufgabe der Erfindung ist daher die Schaffung einer Lösung, bei der Größenunterschiede der auf Lkw's mitführbaren Aggregate und Antriebsunterschiede berücksichtigt und die Vorteile einer optimalen Kühlung bei gleichzeitiger optimaler Schalldämpfung zusammengefaßt und möglich gemacht werden.The object of the invention is therefore to provide a solution in which the size differences of the units and drive differences which can be carried on trucks are taken into account and the advantages of optimal cooling with simultaneous optimal sound absorption are combined and made possible.

Mit einer Vorrichtung der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß neben dem Kompressor-Kühlluftgebläse ein weiteres, einen Druckluftkühler zur Kühlung der Förderluft beaufschlagendes Gebläse innerhalb der Kapselung angeordnet ist, wobei dieses weitere gebläse, der Druckluftkühler, und das Kompressor-kühlluftgebläse unter-Schiedliche Luftführungskanäle aufweisen.With a device of the type mentioned, this object is achieved according to the invention in that, in addition to the compressor cooling air blower, a further blower acting on a compressed air cooler for cooling the conveying air is arranged within the encapsulation, this further blower, the compressed air cooler, and the compressor - Have cooling air blowers under-Arbitrary air ducts.

Es hat sich gezeigt, daß durch die Erfindung es möglich gemacht wird, eine sehr kompakte, von Silo-Fahrzeugen mitführbare Aggregaten-Bauweise zu erreichen, wobei eine Schalldämpfung ebenso gegeben ist, wie die Möglichkeit ölfreie Kompressoren einzusetzen, da die auftretenden Temperaturen insbesondere deswegen ohne Probleme beherrscht werden können, wenn unterschiedliche Lüftungskanäle eingesetzt werden, derart, daß damit unterschiedliche Kühlparameter beim zu kühlenden Kompressor einerseits und beim Druckluftkühler andererseits leichter eingehalten werden können.It has been shown that the invention makes it possible to achieve a very compact unit construction that can be carried by silo vehicles, with sound insulation as well as the possibility of using oil-free compressors, since the temperatures that occur in particular are without Problems can be mastered if different ventilation ducts are used, in such a way that different cooling parameters for the compressor to be cooled, on the one hand, and for the compressed air cooler, on the other hand, can thus be more easily maintained.

Auch wird durch die Trennung der Luftführungskanäle eine kompakte Bauweise erreicht, da diese innerhalb der gemeinsamen Kapselung ggf. auch gegenläufig zueinander, allerdings im Strömungsweg getrennt, angeordnet sein können.The separation of the air ducts also achieves a compact design, since they can also be arranged in opposite directions to one another within the common encapsulation, but separately in the flow path.

Weitere Ausgestaltungen und Vorteile ergeben sich aus den sonstigen Unteransprüchen.Further configurations and advantages result from the other subclaims.

Der Antrieb kann in einer gemeinsamen Kapselung, wie beim gattungsbildenden Stand der Technik, vorgesehen sein. Hier kann auch ein externer Antrieb, etwa von einem Nebenantrieb des Getriebes des Fahrzeuges, vorgesehen sein.The drive can be provided in a common encapsulation, as in the generic state of the art. An external drive, for example of a power take-off of the transmission of the vehicle, can also be provided here.

Vorteilhaft kann es sein, wenn der Druckluftwärmetauscher als Luftkühler eine Stirnseite der Kapselung bildet mit innenliegendem Kühlluftgebläse und unmittelbar zugeordneten, seitlichen Ausströmkanälen für die entsprechende Kühlluft, wobei alternativ oder gemeinsam auch vorgesehen sein kann, daß das Kompressor-Kühlluftgebläse die Kühlluft aus einer Bodenansaugöffnung ansaugt, wobei nach Überströmen des Kompressors die andere Stirnwand der Kapselung mit einer Abluftaustrittsöffnung versehen ist.It can be advantageous if the compressed air heat exchanger as an air cooler forms an end face of the encapsulation with an internal cooling air blower and directly assigned lateral outflow channels for the corresponding cooling air, alternatively or jointly it can also be provided that the compressor cooling air blower sucks the cooling air out of a floor suction opening. wherein after overflowing the compressor, the other end wall of the encapsulation with an exhaust outlet is provided.

Mit den oben beschriebenen Gestaltungen lassen sich einfache Trennungen der Kühlluftströme erreichen, womit vermieden wird, daß etwa angewärmte Kühlluft aus einem Kühlkanal vom Gebläse des anderen Kühlluftstromes angesaugt wird.With the designs described above, simple separations of the cooling air flows can be achieved, thereby avoiding that, for example, warmed cooling air is sucked in from one cooling duct by the blower of the other cooling air flow.

Vorteilhaft ist es auch, wenn beispielsweise die Kapselung mit einer weiteren Bodenansaugöffnung zum Ansaugen der Druckluft versehen ist, was auch dem Ziel dient, die Druckluft nicht unnötig vorzuwärmen, da sie durch die Kompression ohnehin stark aufgeheizt wird.It is also advantageous if, for example, the encapsulation is provided with a further bottom suction opening for sucking in the compressed air, which also serves the purpose of not preheating the compressed air unnecessarily, since the compression heats it up anyway.

Zur weiteren Reduzierung der auftretenden Geräusche sieht die Erfindung auch vor, daß innerhalb der Kapselung ein Zweiweg-Schalldämpfer für die Druckluft untergebracht ist.To further reduce the noise that occurs, the invention also provides that a two-way silencer for the compressed air is accommodated within the encapsulation.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aufgrund der nachfolgenden Beschreibung sowie anhand der Zeichnungen. Diese zeigt in

Fig. 1
ein Prinzipschaltbild der erfindungsgemäßen Vorrichtung,
Fig. 2
in vereinfachter Darstellung eine Aufsicht auf eine erfindungsgemäße Vorrichtung sowie in
Fig. 3
eine Seitenansicht in der Darstellungsweise gemäß Fig. 2.
Further features, details and advantages of the invention result from the following description and from the drawings. This shows in
Fig. 1
2 shows a basic circuit diagram of the device according to the invention,
Fig. 2
in a simplified representation a top view of a device according to the invention and in
Fig. 3
3 shows a side view as shown in FIG. 2.

In Fig. 1 sind schematisch drei Strömungswege von Luft dargestellt, wie die Luft, die die allgemein mit 1 bezeichnete Vorrichtung durchströmt. Die durchgezogene, mit Pfeilen versehene Linie 2 soll den eg der Druckluft darstellen, die doppelgestrichen punktierte Linie 3 zeigt den Strömungsweg der Kühlluft durch den mit 4 bezeichneten Druckluftwärmeaustauscher, die gestrichen punktierten Linien 5 zeigen den Weg der Kompressorkühlluft über den mit 6 bezeichneten Kompressor und einen dort vorgesehenen angeflanschten Motor 7.1 schematically shows three flow paths of air, such as the air which flows through the device, generally designated 1. The solid, arrowed line 2 should represent the eg of the compressed air, the double-dashed dotted line 3 shows the flow path of the cooling air through the compressed air heat exchanger designated by 4, the dashed dotted lines 5 show the path of the compressor cooling air via the compressor labeled 6 and one Flanged motor 7 provided there.

Auf einer Welle ist im Beispiel der Fig. 1 neben dem Motor 7 und dem Kompressor 6 ein der Kompressorlüftung zugeordnetes Ventilatorrad 8 und ein dem Druckluftkühler 4 zugeordneten Ventilatorrad 9 vorgesehen, wobei zwischen den beiden Ventilatorrädern, von der mit 10 bezeichneten Welle durchsetzt, eine Ablenkschikane 11 zum Ablenken des Kühlluftstromes 3 vorgesehen ist.In addition to the motor 7 and the compressor 6, a fan wheel 8 assigned to the compressor ventilation and a fan wheel 9 assigned to the compressed air cooler 4 are provided on a shaft in the example of FIG. 1, with a deflection baffle between the two fan wheels, through which the shaft denoted by 10 is located 11 is provided for deflecting the cooling air flow 3.

In den Fig. 2 und 3 ist die Konstruktion in etwas anderer Darstellung wiedergegeben. Hier ist innerhalb einer Kapselung 12 der Kompressor 6 mit der Lüfterwelle 10 untergebracht, wobei auf der Welle 10 eine Riemenscheibe 12 angedeutet ist, die über einen Nebentrieb des Motors beaufschlagt ist. Erkennbar trägt die Welle 10 beide Lüfterräder 8 und 9 unter Zwischenschaltung eines Untersetzungsgetriebes 10a. Der vom Lüfterrad 9 angesogene Kühlluftstrom 3 durch den Drucklüftkühler 4 wird über Ablenkbleche 11a seitlich aus der Kapselung 12 ausgeleitet, wie dies in Fig. 2 angedeutet ist. Die Druckluft selbst wird über eine Bodenansaugöffnung 13 angesaugt, durch den Kompressor 6 verdichtet und dann über einen Schalldämpfer 14, der sich noch innerhalb der Kapselung befindet zum Wärmeaustauscher 4 geleitet, um schließlich am Ende der Druckluftleitung, welches mit 15 bezeichnet ist, für den Verbraucher gekühlt zur Verfügung zu stehen.2 and 3, the construction is shown in a slightly different representation. Here, the compressor 6 with the fan shaft 10 is accommodated within an encapsulation 12, a pulley 12 being indicated on the shaft 10, which acts on a secondary drive of the motor is. As can be seen, the shaft 10 carries both fan wheels 8 and 9 with the interposition of a reduction gear 10a. The cooling air flow 3 drawn in by the fan wheel 9 through the compressed air cooler 4 is discharged laterally out of the encapsulation 12 via baffles 11a, as is indicated in FIG. 2. The compressed air itself is sucked in through a bottom suction opening 13, compressed by the compressor 6 and then passed to the heat exchanger 4 via a muffler 14, which is still inside the encapsulation, and finally at the end of the compressed air line, which is denoted by 15, for the consumer to be available chilled.

Zur Kühlung des Kompressors 6 und ggf. eines innerhalb der Kapselung 12 befindlichen Motors wird vom Lüfterrad 8 über eine Bodenöffnung 16 Kühlluft angesaugt, über den Kompressor geleitet und über eine Abluftaustrittsöffnung 17 wieder nach außen geleitet.In order to cool the compressor 6 and possibly a motor located within the encapsulation 12, cooling air is drawn in by the fan wheel 8 through a bottom opening 16, passed through the compressor and passed out again via an exhaust air outlet opening 17.

Natürlich ist das beschriebene Ausführungsbeispiel der Erfindung noch in vielfacher Hinsicht abzuändern, ohne den Grundgedanken zu verlassen. So ist die Erfindung insbesondere nicht auf die besondere räumliche Anordnung der Aggregate zueinander beschränkt, wobei allerdings die hier gewählte besonders zweckmäßig ist und geeignet ist, innerhalb einer gemeinsamen Schallschutzkapselung untergebracht zu werden.Of course, the described embodiment of the invention can be modified in many ways without departing from the basic idea. In particular, the invention is not limited to the particular spatial arrangement of the units with respect to one another, although the one selected here is particularly expedient and is suitable for being accommodated within a common soundproof encapsulation.

Claims (6)

  1. Device (1) for use on a silo vehicle transporting blowable media, the device (1) being equipped with a driven compressor (6) for the production of transport air for the blowable media and the compressor (6) with its associated compressor cooling air blower (8) being situated inside an enclosure (12) through which cooling air flows, characterised in that in addition to the compressor cooling air blower (8) a further blower (9), acting on a forced air cooler (4) for the cooling of the transport air, is provided inside the enclosure (12), this further blower (9), the forced air cooler (4) and the compressor cooling air blower (8) having different air ducts.
  2. Device in accordance with Claim 1, characterised in that the blowers (8, 9) and the compressor (6) are situated, driven with a single axis from one common drive (7 and 7a), inside the enclosure (12).
  3. Device in accordance with Claims 1 or 2, characterised in that the forced air heat exchanger (4), as an air cooler, forms an end face of the enclosure (12), with an internally situated cooling air blower (9) and with lateral discharge channels directly associated therewith and serving for the cooling air (3).
  4. Device in accordance with one of the foregoing claims, characterised in that the compressor cooling air blower (8) takes in the cooling air (5) by suction from a floor suction orifice (16), while after the overflowing of the compressor (6) the other end face of the enclosure (12) is provided with an exhaust air outlet orifice (17).
  5. Device in accordance with one of the foregoing claims, characterised in that the enclosure (12) is provided with a further floor suction orifice (13) for taking in the compressed air by suction.
  6. Device in accordance with one of the foregoing claims, characterised in that a two-way silencer (14) for the compressed air is accommodated inside the enclosure (12).
EP91119236A 1991-03-08 1991-11-12 Compressor for a silo Expired - Lifetime EP0503139B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4107374 1991-03-08
DE4107374A DE4107374A1 (en) 1991-03-08 1991-03-08 COMPRESSOR FOR SILO VEHICLES

Publications (3)

Publication Number Publication Date
EP0503139A2 EP0503139A2 (en) 1992-09-16
EP0503139A3 EP0503139A3 (en) 1993-05-12
EP0503139B1 true EP0503139B1 (en) 1996-09-18

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EP91119236A Expired - Lifetime EP0503139B1 (en) 1991-03-08 1991-11-12 Compressor for a silo

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EP (1) EP0503139B1 (en)
AT (1) ATE143102T1 (en)
DE (2) DE4107374A1 (en)

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EP0503139A2 (en) 1992-09-16
EP0503139A3 (en) 1993-05-12
DE59108207D1 (en) 1996-10-24
DE4107374A1 (en) 1992-09-10
ATE143102T1 (en) 1996-10-15

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