EP0079399B1 - Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator - Google Patents

Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator Download PDF

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Publication number
EP0079399B1
EP0079399B1 EP81109690A EP81109690A EP0079399B1 EP 0079399 B1 EP0079399 B1 EP 0079399B1 EP 81109690 A EP81109690 A EP 81109690A EP 81109690 A EP81109690 A EP 81109690A EP 0079399 B1 EP0079399 B1 EP 0079399B1
Authority
EP
European Patent Office
Prior art keywords
suction
air filter
propeller
arrangement according
suction element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81109690A
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German (de)
French (fr)
Other versions
EP0079399A1 (en
Inventor
Rolf Peiler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Priority to EP81109690A priority Critical patent/EP0079399B1/en
Priority to DE8181109690T priority patent/DE3175314D1/en
Priority to US06/437,427 priority patent/US4443236A/en
Priority to AU90275/82A priority patent/AU550499B2/en
Priority to CA000415324A priority patent/CA1196582A/en
Priority to ZA828293A priority patent/ZA828293B/en
Priority to BR8206547A priority patent/BR8206547A/en
Priority to MX195175A priority patent/MX154662A/en
Priority to DK504282A priority patent/DK155451C/en
Priority to ES517312A priority patent/ES8308965A1/en
Publication of EP0079399A1 publication Critical patent/EP0079399A1/en
Application granted granted Critical
Publication of EP0079399B1 publication Critical patent/EP0079399B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air

Definitions

  • the invention relates to a cleaning device for cleaning a suction surface of an air filter of a cooling unit provided in a harvesting machine with at least one cooler having a blower for an internal combustion engine or an air conditioning system, the dirt particles adhering to the suction surface via a suction part provided outside the cooling air housing, a suction line connected to this, connected to a vacuum side of the cooling air housing and an outlet opening are released into the open.
  • An internal combustion engine with a cleaning device for a fixed filter is known (US-A-3155473), which consists of a filter arranged in front of the screen.
  • the pressure part is connected via a compressed air line to a compressed air nozzle which is pressurized with compressed air via a propeller arranged on the internal combustion engine, so that it can then be pressed through the sieve in order to press the dirt particles out of the air filter.
  • a cleaning device for cleaning the air filter for an internal combustion engine installed in a combine harvester is also known (DE-A-2 418 054), which is surrounded by an engine cowling.
  • This cladding has a front wall with air inlet openings, on the outside of which a stationary suction part is arranged, which is connected to the blower of the internal combustion engine via a suction line.
  • the air filter consists of a pot-like sieve and is rotatably mounted in the outer wall of the combine harvester, which is part of the engine cowling, and sealed against the wall of the housing. Furthermore, the air filter must be driven by an additional drive device.
  • a cleaning device for cleaning an air filter of the type mentioned at the outset is known (US Pat. No. 3,837,149), which consists of a rotatably mounted air filter which is provided in a housing for receiving the internal combustion engine and which has to be cleaned via a suction nozzle. A part of the suction nozzle is guided along the outer surface of the rotatably mounted air filter and is operatively connected via a suction nozzle to a further propeller which is driven by the power take-off of the internal combustion engine.
  • the air filter is driven by a special drive device, which is also arranged in the housing for covering the internal combustion engine.
  • Such a device is relatively complex and expensive, since the rotatably mounted air filter must be sealed, so that no kei. l e dirt particles can enter in the area of the air filter bearing.
  • the invention has for its object to improve a harvesting machine with a cleaning device for a fixed air filter so that a good cleaning of the air filter can be achieved with simple structural means while saving on driving means.
  • This object has been achieved in that the suction part is rotatably mounted in front of the suction surface and is assembled with at least one propeller part or is designed as such to generate the drive torque.
  • the cleaning device Due to the advantageous design of the cleaning device, it is possible to achieve effective cleaning of the air filter in a simple manner using fewer components, for which purpose the suction part moves in front of the surface of the air filter and in each case generates a negative pressure on the surface to be covered, so that there adhering dirt particles are removed and then gradually move to the center, where they can be discharged via the blower line to the outside. Due to the rotatable mounting of the suction part via the propeller part assigned to it, a drive for the suction part is created in a simple manner, so that a complex additional drive device for the suction part is no longer necessary. Since the blower air has the same flow direction as the dirt particles to be extracted, they can be discharged to the outside via the blower, which is located behind the cooler.
  • the suction surface forms the surface of the cooler or the surface of an air filter upstream of the cooler, as seen in the flow direction, a continuous inlet opening of the suction part sweeping approximately the entire suction surface.
  • the suction part has at least one inlet opening at its outer end and that the suction part consists of a U-shaped support open on three sides, the opposite legs of which are exposed in the area of the outer end so that they are connected to the web of the U-profile support form an obtuse angle, while the leg piece adjoining the exposed part forms a right angle with the web.
  • the dirt particles which are pressed onto the surface of the air filter by the air flow entering the air filter, are sucked off by the rotating suction nozzle, since no contact pressure affects the dirt particles below the suction part, so that they detach from the surface of the air filter can.
  • the suction flow below the suction part the dirt particles are guided to penetration and through the suction line through the air filter into the adjoining blower line, which is connected to an outlet opening of the blower housing.
  • This arrangement creates an effective suction device in a simple manner, which can be driven at the same time by the air entering the air filter. Since only the suction part rotates and the air filter is firmly connected to the blower housing, a relatively expensive seal for the air filter can be dispensed with.
  • the suction part can be designed so that it also works as a propeller. However, it is also possible that the propeller is detachably connected to the suction part. In this way you get two individual components that are much easier to manufacture.
  • the suction part has a propeller which can be releasably connected to it and which is arranged offset with respect to the suction part as seen in the direction of rotation. It is also advantageous that the axis for receiving the suction part is received in a holder which is detachably connected to a wall of the harvesting machine or to the air filter or to a part of the suction line.
  • the suction part is arranged concentrically to the inlet opening and is rotatably received at the front end of the suction line. It is also advantageous that the cross section of the suction part widens towards the axis of rotation and is triangular or semicircular. It is also advantageous that the suction line can be formed from one or more detachably connectable parts.
  • the suction part can either be rotatably mounted directly in a holder connected to the filter or can be received in a holder which is attached to the outside of the combine harvester.
  • the drive of the suction part can be improved in that the web of the suction part has an incision in the area of its two outer ends, at the end edge of which runs parallel to the longitudinal axis of the suction part, an angled part is connected in the direction of the air filter, the surface of which is approximately parallel to the The surface of the other exhibited part runs.
  • 10 denotes a combine housing of a self-propelled combine 11, which has two front wheels 12 and two rear, controllable wheels 14.
  • the combine housing 10 is provided with a vertically extending side wall 16.
  • the combine 11 has a laterally protruding collecting container 18 which is arranged approximately centrally in the combine, the side walls of the collecting container 18 running outside the side wall 16 of the combine housing 10.
  • a driver's cab 20 is located on the left side of the combine 11 above the front wheels 12 and immediately in front of the collecting container 18.
  • To the right of the driver's cab 20 is an engine cowling 22 which is provided with a horizontally extending cover 24 which is on the same level how the upper edge of the collecting container 18 lies.
  • the engine cover 22 has a right, somewhat inclined side wall 26, a front derwand 28 and a not visible in the drawing left side wall and a rear wall.
  • the drawing shows on the left and right with reference to the direction of travel of the combine 11 according to FIG. 1.
  • Combine harvester housing 10 has a forward-facing crop inlet opening, not visible in the drawing, to which an inclined conveyor housing 30 is connected, which extends forward and downward from the crop inlet opening and can have a harvesting device 34, for example a maize header, at the front end. which is only indicated schematically in the drawing.
  • An internal combustion engine 36 (FIG. 3) extending transversely to the direction of travel is provided with a shaft 38 for driving a traction mechanism transmission 40, in FIG.
  • An approximately rectangularly shaped, vertically extending radiator or engine cooler 42 is located between the right side wall 26 and the right end of the internal combustion engine 36.
  • Hose lines are connected to the engine cooler 42, which conduct coolant to and from the internal combustion engine 36 .
  • the engine cooler 42 is arranged on a support device, also not shown in the drawing, which can be connected to a support device of the internal combustion engine 36.
  • blower 44 which can be driven via the internal combustion engine and which consists of a rectangular plate 46 with a circular opening 48 in which an impeller 50 is arranged. Furthermore, a blower duct 52 is guided into the area of the opening 48 of the blower 44, which, like the blower, can be mounted on a holder (not shown in the drawing).
  • a suction line 54 connects to the blower duct 52 and can be detachably connected to the right end 56 of the blower duct 52.
  • the suction line 54 is connected to an inlet opening 58 which is provided in an air filter 60.
  • the air filter 60 is located in the right tepitenwand 26 of the combine housing 10.
  • the air filter, " ⁇ has numerous small openings through which cleaned air is sucked in via the blower 44.
  • the air filter 60 which in the exemplary embodiment is rectangular, can also have a circular cross-section and are detachably mounted in a corresponding opening provided in the side wall 26. It is also possible to connect the air filter 60 to the side wall by means of hinges, so that it can be folded outwards for better access to the internal parts of the blower 44 and the engine cooler 42 provided between the blower and the air filter 60.
  • a holder 62 for receiving an axis 64 on which a suction part 66 is rotatably mounted U-shaped profile carrier and is to the surface of the air filter 60 and on its two outer end faces open so that cleaning air can get into the suction channel 68 of the suction part 66, which is sucked off via the suction line 54 and the blower channel 52.
  • the air discharged from the blower duct 52 passes through the opening 48 of the blower 44 into the area of the internal combustion engine 36 and exits through numerous outlet openings 69 provided in the front wall 28 of the engine cowling 22.
  • the front end of the suction line 54 can also serve as the holder 62.
  • the suction part 66 there is a propeller 67, which can be detachably connected to the suction part 66 and which is designed such that it is set in rotation by the sucked-in air which enters the air filter 60 through the small openings. Since the propeller 67 is connected to the suction part 66, the suction part 66 is also driven and sweeps past the surface of the air filter 60.
  • the suction part 66 is sc angtlo ' dnet with its edges pointing in the direction of the air filter that only a minimal gap remains between the edges of the suction part 66 and the surface of the air filter 60.
  • the fan wheel 50 of the fan 44 shown in FIG. 3 is rotatably mounted on an axis not shown in the drawing and is equipped with a drive wheel which can be connected to the drive shaft 38 of the internal combustion engine 36 via a traction mechanism gear.
  • FIG. 4 and 5 show a further exemplary embodiment of a cleaning device for cleaning the air filter 60, which is equipped with a differently designed suction line 54.
  • the recooler 42 ′ shown in FIG. 4 has a condenser for an evaporator (not shown in the drawing) arranged in the driver's cab 20.
  • the condenser is formed from individual cooling coils 71 and integrated in the cooler 42 '.
  • the cooling coils 71 of the condenser are connected via an output line 70 to the evaporator, not shown in the drawing, of an air conditioning system, the output of which is connected to the supply line 72 of the condenser.
  • a cool air housing 74 connects to the cooler 42 ′ with the associated condenser.
  • the cooling air housing 74 has an inlet opening 78 which is rectangular in cross section and which is completely covered by the sieve-like air filter 60 with numerous through openings.
  • the air filter 60 according to FIG. 4 can be provided in the side wall 26 of the combine housing, as in the exemplary embodiment according to FIG. 3.
  • the cooling air housing 74 has two vertically extending side walls 80 and 82 as well as an upper wall 84 and a lower wall 86.
  • a holder 88 is connected to the vertically extending side walls 80, 82 and serves to receive an axis 64.
  • the rear end of the axle 64 received in the holder 88 can be supported in the air filter 60 with its rear end.
  • the bracket is releasably attached to the connecting elements, not shown in the drawing Side walls 80 and 82 connected.
  • a suction part 66 ' is rotatably mounted on the axis 64 and, like the suction part 66 according to FIG. 3, consists of a U-profile. 4 and 5, the outer part of the leg of the U-shaped suction part is provided with a propeller part 90, which forms an obtuse angle with the central web 94 of the suction part 66 '.
  • a leg piece 96 adjoins the propeller part 90 and encloses a right angle with the web 94.
  • the opposite outer leg of the suction part 66 ' also has an outward propeller part 92, to which a leg piece 96 is also connected.
  • the cooler 42 ′ is followed by a blower housing 100 with a rectangular cross section, in which the blower 44 with the blower wheel 50 is provided.
  • the suction line 54 is connected to the inlet opening 58 arranged coaxially in the air filter 60, which is led through an opening 102 provided in the cooling air housing 74 and is connected to an opening 104 provided in the blower housing 100.
  • the cooling air emerging from the blower housing 100 can escape through the openings 69 provided in the front wall 28.
  • the drive of the suction part 66 '(FIG. 6) can be improved by using an additional propeller part 106 which is arranged on the same radius as the propeller part 90 or 92.
  • the propeller part 106 consists of an incision in the web 94 of the suction part 66 ′′ and is bent toward the surface of the air filter 60.
  • the surface of the propeller part 106 can run parallel to the surface of the propeller part 90 or 92.
  • dirt particles for example coffee parts
  • the suction part 66 which is driven either by the propeller 67 or by the propeller parts 90, 92, "S, the dirt particles can be easily sucked off the surface of the air filter, since in each case in the section of the air filter 60 , which is swept by the suction part 66, it is no longer possible to build up contact pressure which would press the dirt particles against the surface of the air filter 60.
  • the suction part 66 can be driven relatively quickly, even then if larger dirt particles act as an obstacle to the suction part 66, since the propeller 67 is on transfers relatively large torque to the suction part 66.
  • the suction part 66 If, however, the suction part 66 is not to be driven too quickly, it only needs to be provided with a propeller part 90 having a smaller area, by means of which the suction part 66 'or 66 "can be driven.
  • the speed of the suction part 66' can also be achieved thereby increase that in addition to the propeller parts 90 and 92, ribs are provided on the legs of the suction part 66 '.
  • the advantageous use of the propeller 67 or the propeller parts 90, 92 makes the use of a special drive device for the suction part 66, 66', 66 " superfluous.
  • the air filter 60 can be stationary, i. H.
  • the suction part 66 ' provided in the exemplary embodiment according to FIGS. 3 and 5 can also have a different cross section.
  • the suction part 66 ' can also taper from the center to its outer ends.
  • only one propeller or one suction part several propellers or suction parts can also be used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combines (AREA)
  • Exhaust Silencers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

Die Erfindung bezieht sich auf eine Reinigungsvorrichtung zum Reinigen einer Durchlaßöffnungen aufweisenden Ansaugfläche eines Luftfilters eines in einer Erntebergungsmaschine vorgesehenen Kühlaggregates mit mindestens einem ein Gebläse aufweisenden Kühler für einen Verbrennungsmotor oder einer Klimaanlage, wobei die an der Ansaugfläche haftenden Schmutzpartikel über einen außerhalb des Kühlluftgehäuses vorgesehenen Absaugteil, eine mit diesem verbundene, an eine Unterdruckseite des Kühlluftgehäuses angeschlossene Absaugleitung und eine Auslaßöffnung ins Freie abgegeben werden.The invention relates to a cleaning device for cleaning a suction surface of an air filter of a cooling unit provided in a harvesting machine with at least one cooler having a blower for an internal combustion engine or an air conditioning system, the dirt particles adhering to the suction surface via a suction part provided outside the cooling air housing, a suction line connected to this, connected to a vacuum side of the cooling air housing and an outlet opening are released into the open.

Es ist eine Verbrennungskraftmaschine mit einer Reinigungsvorrichtung für einen feststehenden Lj'.4filter bekannt (US-A-3155473), die aus einem vor dem Sieb angeordneten. Abstreiforgan, einem hinter dem Sieb angeordneten Druckteil sowie einem Propeller besteht, die gerreinsam auf einer Welle angeordnet sind, die einenends in dem Sieb, anderenends in einer zusätzlich vorgesehenen Tragvorrichtung aufgenommen ist. Der Druckteil steht über eine Druckluftleitung mit einem Druckluftstutzen in Verbindung, der über einen an der Verbrennungskraftmaschine angeordneten Propeller mit Druckluft beaufschlagt wird, so daß diese dann durch das Sieb gedrückt werden kann, um auf diese Weise die Schmutzpartikel aus dem Luftfilter herauszudrücken. Da jedoch der hinter dem Druckteil vorgesehene Propeller sowie der an der Verbrennungskraftmaschine vorgesehene Propeller die Luft über den Luftfilter ansaugen, werden die aus dem Sieb herausgedrückten Schmutzpartikel nach Passieren des Druckluftteiles wieder auf die Oberfläche des Luftfilters angesaugt, so daß der Reinigungseffekt wieder aufgehoben wird. Ferner ist eine derartige Ausbildung und Anordnung der Reinigungsvorrichtung wegen der vielen Einzelteile sehr aufwendig und teuer, da einmal eine aufwendige Lagerung der Welle erforderlich ist und zur Reinigung des Siebes der Abstreifteil sowie der Druckteil beiderseits des Luftfilters angeordnet werden müssen, die dann über den Propeller zwischen der Halterung und dem Druckteil angetrieben werden sollen.An internal combustion engine with a cleaning device for a fixed filter is known (US-A-3155473), which consists of a filter arranged in front of the screen. Scraper organ, a pressure part arranged behind the screen and a propeller, which are arranged together on a shaft which is received at one end in the screen and at the other end in an additionally provided carrying device. The pressure part is connected via a compressed air line to a compressed air nozzle which is pressurized with compressed air via a propeller arranged on the internal combustion engine, so that it can then be pressed through the sieve in order to press the dirt particles out of the air filter. However, since the propeller provided behind the pressure part and the propeller provided on the internal combustion engine suck in the air through the air filter, the dirt particles pressed out of the sieve are sucked back onto the surface of the air filter after passing through the compressed air part, so that the cleaning effect is canceled again. Furthermore, such a design and arrangement of the cleaning device is very complex and expensive because of the many individual parts, since once a complex bearing of the shaft is required and to clean the screen, the stripping part and the pressure part must be arranged on both sides of the air filter, which are then between the propeller the bracket and the pressure part are to be driven.

Ferner ist eine Reinigungsvorrichtung zur Reinigung des Luftfilters für eine in einem Mähdrescher eingebaute Verbrennungskraftmaschine bekannt (DE-A-2 418 054), die von einer Motorverkleidung umgeben wird. Diese Verkleidung weist eine Vorderwand mit Lufteinlaßöffnungen auf, an deren Außenseite ein stationärer Absaugteil angeordnet ist, der über eine Saugleitung mit dem Gebläse der Verbrennungskraftmaschine verbunden ist. Der Luftfilter besteht aus einem topfartigen Sieb und ist in der Gehäuseaußenwand des Mähdreschers, die Teil der Motorverkleidung ist, drehbar gelagert und gegenüber der Gehäusewand abgedichtet. Ferner muß der Luftfilter über eine zusätzliche Antriebsvorrichtung angetrieben werden.A cleaning device for cleaning the air filter for an internal combustion engine installed in a combine harvester is also known (DE-A-2 418 054), which is surrounded by an engine cowling. This cladding has a front wall with air inlet openings, on the outside of which a stationary suction part is arranged, which is connected to the blower of the internal combustion engine via a suction line. The air filter consists of a pot-like sieve and is rotatably mounted in the outer wall of the combine harvester, which is part of the engine cowling, and sealed against the wall of the housing. Furthermore, the air filter must be driven by an additional drive device.

Ferner ist eine Reinigungsvorrichtung zum Reinigen eines Luftfilters der eingangs aufgeführten Art bekannt (US-A-3 837 149), die aus einem in einem Gehäuse zur Aufnahme der Verbrennungskraftmaschine vorgesehenen drehbar gelagerten Luftfilter besteht, der über einen Absaugstutzen gereinigt werden muß. Ein Teil des Absaugstutzens ist an der äußeren Oberfläche des drehbar gelagerten Luftfilters entlanggeführt und steht über einen Saugstutzen mit einem weiteren Propeller in Wirkverbindung, der über die Zapfwelle der Verbrennungskraftmaschine angetrieben wird. Der Luftfilter wird über eine besondere Antriebsvorrichtung angetrieben, die hierzu ebenfalls im Gehäuse zur Abdeckung der Verbrennungskraftmaschine angeordnet ist. Eine derartige Vorrichtung ist relativ aufwendig und teuer, da der drehbar gelagerte Luftfilter be sonders abgedichtet werden muß, damit kei.le Schmutzpartikel im Bereich der Lagerstelle des Luftfilters eintreten können.Furthermore, a cleaning device for cleaning an air filter of the type mentioned at the outset is known (US Pat. No. 3,837,149), which consists of a rotatably mounted air filter which is provided in a housing for receiving the internal combustion engine and which has to be cleaned via a suction nozzle. A part of the suction nozzle is guided along the outer surface of the rotatably mounted air filter and is operatively connected via a suction nozzle to a further propeller which is driven by the power take-off of the internal combustion engine. The air filter is driven by a special drive device, which is also arranged in the housing for covering the internal combustion engine. Such a device is relatively complex and expensive, since the rotatably mounted air filter must be sealed, so that no kei. l e dirt particles can enter in the area of the air filter bearing.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, eine Erntebergungsmaschine mit einer Reinigungsvorrichtung für einen feststehenden Luftfilter so zu verbessern, daß mit einfachen baulichen Mitteln unter Einsparung von Antriebsmitteln eine gute Reinigung des Luftfilters erzielt werden kann. Diese Aufgabe ist dadurch gelöst worden, daß der Absaugteil vor der Ansaugfläche drehbar gelagert und zur Erzeugung des Antriebsmomentes mit mindestens einem Propellerteil zusammengebaut oder selbst als solcher ausgebildet ist. Durch die vorteilhafte Ausbildung der Reinigungsvorrichtung ist es möglich, auf einfache Weise unter Verwendung weniger Bauteile eine wirkungsvolle Reinigung des Luftfilters zu erreichen, wozu der Absaugteil vor der Oberfläche des Luftfilters sich vorbeibewegt und jeweils an der zu überstreichenden Fläche einen Unterdruck erzeugt, so daß die dort anhaftenden Schmutzpartikel abgelöst werden und dann sich allmählich zur Mitte bewegen, wo sie über die Gebläseleitung nach außen abgegeben werden können. Durch die drehbare Lagerung des Absaugteiles über den diesem zugeordneten Propellerteil wird auf einfache Weise ein Antrieb für den Absaugteil geschaffen, so daß eine aufwendige zusätzliche Antriebsvorrichtung für den Absaugteil nicht mehr notwendig ist. Da die Gebläseluft die gleiche Strömungsrichtung aufweist wie die abzusaugenden Schmutzpartikel, können diese über das Gebläse, das hinter dem Kühler liegt, nach außen hin abgegeben werden. Dadurch wird neben einer einwandfreien Kühlung auch ein guter Transport der Schmutzpartikel gewährleistet, da die Schmutzpartikel, nachdem sie von der Oberfläche des Luftfilters gelöst sind, nicht auf diesen erneut zurückgeführt werden. Es kann somit auf eine zusätzliche Abstreifvorrichtung, beispielsweise eine rotierende Bürste, verzichtet werden. Da der Absaugteil sowie der Propellerteil beide vor dem Luftfilter angeordnet sind, lassen sich diese Teile auf einfache Weise im Luftfilter lagern, so daß bei einer Reinigung des Kühlers ein Ausbau des Luftfilters gemeinsam mit dem Propellerteil und dem Absaugteil möglich ist und somit in kürzester Zeit ein Zugang zur Verbrennungskraftmaschine geschaffen werden kann. Hierzu ist es gemäß der Erfindung vorteilhaft, daß dem Absaugteil neben dem ersten Propellerteil ein weiterer Propellerteil zugeordnet sein kann. Vorteilhaft ist es ferner, daß die Ansaugfläche die Oberfläche des Kühlers bzw. die Oberfläche eines dem Kühler in Strömungsrichtung gesehen vorgeschalteten Luftfilters bildet, wobei eine durchgehende Einlaßöffnung des Absaugteiles in etwa die gesamte Ansaugoberfläche überstreicht. Dabei ist es ferner vorteilhaft, daß der Absaugteil an seinem äußeren Ende mindestens eine Einlaßöffnung aufweist und daß der Absaugteil aus einem zu drei Seiten hin offenen U-Profilträger besteht, dessen gegenüberliegende Schenkel im Bereich des äußeren Endes so herausgestellt sind, daß sie mit dem Steg des U-Profilträgers einen stumpfen Winkel bilden, während das sich am herausgestellten Teil anschließende Schenkelstück mit dem Steg einen rechten Winkel bildet. Die Schmutzpartikel, die auf der Oberfläche des Luftfilters durch den in den Luftfilter eintretenden Luftstrom angedrückt werden, werden von dem rotierenden Absaugstutzen abgesaugt, da sich jeweils unterhalb des Ansaugteiles kein Anpreßdruck mehr auf die Schmutzpartikel auswirkt, so daß sie sich von der Oberfläche des Luftfilters lösen können. Durch die unterhalb des Absaugteils vorhandene Absaugströmung werden die Schmutzpartikel zur Durchdringung geleitet und über die Absaugleitung durch den Luftfilter in die sich anschließende Gebläseleitung geführt, die mit einer Auslaßöffnung des Gebläsegehäuses in Verbindung steht. Durch diese Anordnung wird auf einfache Weise eine wirksame Absaugvorrichtung geschaffen, die gleichzeitig durch die in den Luftfilter eintretende Luft angetrieben werden kann. Da lediglich der Absaugteil rotiert und der Luftfilter fest mit dem Gebläsegehäuse verbunden ist, kann auf eine relativ teure Abdichtung für den Luftfilter verzichtet werden. Der Absaugteil kann so ausgebildet sein, daß er gleichzeitig auch als Propeller arbeitet. Es ist jedoch auch möglich, daß der Propeller mit dem Absaugteil lösbar verbunden ist. Auf diese Weise erhält man zwei einzelne Bauteile, die wesentlich leichter herzustellen sind.In contrast, the invention has for its object to improve a harvesting machine with a cleaning device for a fixed air filter so that a good cleaning of the air filter can be achieved with simple structural means while saving on driving means. This object has been achieved in that the suction part is rotatably mounted in front of the suction surface and is assembled with at least one propeller part or is designed as such to generate the drive torque. Due to the advantageous design of the cleaning device, it is possible to achieve effective cleaning of the air filter in a simple manner using fewer components, for which purpose the suction part moves in front of the surface of the air filter and in each case generates a negative pressure on the surface to be covered, so that there adhering dirt particles are removed and then gradually move to the center, where they can be discharged via the blower line to the outside. Due to the rotatable mounting of the suction part via the propeller part assigned to it, a drive for the suction part is created in a simple manner, so that a complex additional drive device for the suction part is no longer necessary. Since the blower air has the same flow direction as the dirt particles to be extracted, they can be discharged to the outside via the blower, which is located behind the cooler. In addition to proper cooling, this also ensures good transport of the dirt particles, since the dirt particles, once they have been detached from the surface of the air filter, are not returned to the air filter. An additional wiping device, for example a rotating brush, can thus be dispensed with. Because the suction part As the propeller part are both arranged in front of the air filter, these parts can be easily stored in the air filter, so that when the cooler is cleaned, the air filter can be removed together with the propeller part and the suction part and thus access to the internal combustion engine in the shortest possible time can be created. For this purpose, it is advantageous according to the invention that in addition to the first propeller part, a further propeller part can be assigned to the suction part. It is also advantageous that the suction surface forms the surface of the cooler or the surface of an air filter upstream of the cooler, as seen in the flow direction, a continuous inlet opening of the suction part sweeping approximately the entire suction surface. It is also advantageous that the suction part has at least one inlet opening at its outer end and that the suction part consists of a U-shaped support open on three sides, the opposite legs of which are exposed in the area of the outer end so that they are connected to the web of the U-profile support form an obtuse angle, while the leg piece adjoining the exposed part forms a right angle with the web. The dirt particles, which are pressed onto the surface of the air filter by the air flow entering the air filter, are sucked off by the rotating suction nozzle, since no contact pressure affects the dirt particles below the suction part, so that they detach from the surface of the air filter can. Through the suction flow below the suction part, the dirt particles are guided to penetration and through the suction line through the air filter into the adjoining blower line, which is connected to an outlet opening of the blower housing. This arrangement creates an effective suction device in a simple manner, which can be driven at the same time by the air entering the air filter. Since only the suction part rotates and the air filter is firmly connected to the blower housing, a relatively expensive seal for the air filter can be dispensed with. The suction part can be designed so that it also works as a propeller. However, it is also possible that the propeller is detachably connected to the suction part. In this way you get two individual components that are much easier to manufacture.

Nach einer weiteren Ausgestaltung der Erfindung weist der Absaugteil einen mit diesem lösbar verbindbaren Propeller auf, der gegenüber dem Absaugteil in Umlaufrichtung gesehen versetzt angeordnet ist. Vorteilhaft ist es außerdem, daß die Achse zur Aufnahme des Absaugteils in einer Halterung aufgenommen ist, die mit einer Wand der Erntebergungsmaschine oder mit dem Luftfilter bzw. mit einem Teil der Absaugleitung lösbar verbunden ist.According to a further embodiment of the invention, the suction part has a propeller which can be releasably connected to it and which is arranged offset with respect to the suction part as seen in the direction of rotation. It is also advantageous that the axis for receiving the suction part is received in a holder which is detachably connected to a wall of the harvesting machine or to the air filter or to a part of the suction line.

Nach einem anderen Ausgestaltung der Erfindung ist es vorteilhaft, daß der Absaugteil konzentrisch zur Einlaßöffnung angeordnet und drehbar am vorderen Ende der Absaugleitung aufgenommen ist. Vorteilhaft ist es außerdem, daß der Querschnitt des Absaugteiles sich zur Drehachse hin erweitert und dreieckförmig oder halbkreisförmig ausgebildet ist. Vorteilhaft ist es ferner, daß die Absaugleitung aus einem oder mehreren lösbar miteinander verbindbaren Teilen gebildet sein kann.According to another embodiment of the invention, it is advantageous that the suction part is arranged concentrically to the inlet opening and is rotatably received at the front end of the suction line. It is also advantageous that the cross section of the suction part widens towards the axis of rotation and is triangular or semicircular. It is also advantageous that the suction line can be formed from one or more detachably connectable parts.

Der Absaugteil kann entweder unmittelbar in einer mit dem Filter verbundenen Halterung drehbar gelagert sein oder in einer Halterung aufgenommen werden, die an der Außenseite des Mähdreschers befestigt ist.The suction part can either be rotatably mounted directly in a holder connected to the filter or can be received in a holder which is attached to the outside of the combine harvester.

Der Antrieb des Absaugteils läßt sich dadurch verbessern, daß der Steg des Absaugteils im Bereich seiner beiden äußeren Enden je einen Einschnitt aufweist, an dessen parallel zur Längsachse des Absaugteils verlaufender Stirnkante ein in Richtung des Luftfilters abgewinkelter Teil angeschlossen ist, dessen Oberfläche in etwa parallel zur Oberfläche des anderen ausgestellten Teils verläuft.The drive of the suction part can be improved in that the web of the suction part has an incision in the area of its two outer ends, at the end edge of which runs parallel to the longitudinal axis of the suction part, an angled part is connected in the direction of the air filter, the surface of which is approximately parallel to the The surface of the other exhibited part runs.

Anhand der Zeichnung werden mehrere Ausführungsbeispiele einer Reinigungsvorrichtung für einen Luftfilter nach der Erfindung erläutert.Several exemplary embodiments of a cleaning device for an air filter according to the invention are explained with the aid of the drawing.

Es zeigt :

  • Figur 1 eine perspektivische Darstellung eines Mähdreschers mit der erfindungsgemäßen Reinigungsvorrichtung ;
  • Figur 2 die Reinigungsvorrichtung für den Luftfiiter im größeren Maßstab ;
  • Figur 3 eine schematische, perspektivische Darstellung des Luftfilters mit der erfindungsgemäßen Reinigungsvorrichtung, einem Kühler, einem Gebläse sowie einem Verbrennungsmotor in auseinandergezogener Stellung ;
  • Figur 4 ein weiteres Ausführungsbeispiel einer Reinigungsvorrichtung ;
  • Figur 5 einen Längsschnitt durch die Mittelachse des Absaugteils gemäß Fig. 4 ;
  • Figur 6 ein weiteres Ausführungsbeispiel eines Absaugteils.
It shows :
  • Figure 1 is a perspective view of a combine with the cleaning device according to the invention;
  • Figure 2 shows the cleaning device for the air filter on a larger scale;
  • Figure 3 is a schematic, perspective view of the air filter with the cleaning device according to the invention, a cooler, a blower and an internal combustion engine in an extended position;
  • Figure 4 shows another embodiment of a cleaning device;
  • FIG. 5 shows a longitudinal section through the central axis of the suction part according to FIG. 4;
  • Figure 6 shows another embodiment of a suction part.

In der Zeichnung ist mit 10 ein Mähdreschergehäuse eines selbstfahrenden Mähdreschers 11 bezeichnet, der zwei vordere Laufräder 12 sowie zwei hintere, steuerbare Laufräder 14 aufweist. Das Mähdreschergehäuse 10 ist mit einer vertikal verlaufenden Seitenwand 16 versehen. Ferner weist der Mähdrescher 11 einen seitlich überstehenden Sammelbehälter 18 auf, der in etwa mittig im Mähdrescher angeordnet ist, wobei die Seitenwände des Sammelbehälters 18 außerhalb der Seitenwand 16 des Mähdreschergehäuses 10 verlaufen. Eine Fahrerkabine 20 befindet sich auf der linken Seite des Mähdreschers 11 oberhalb der vorderen Laufräder 12 und unmittelbar vor dem Sammelbehälter 18. Rechts von der Fahrerkabine 20 befindet sich eine Motorverkleidung 22, die mit einer horizontal verlaufenden Abdeckung 24 versehen ist, die auf der gleichen Ebene wie die Oberkante des Sammelbehälters 18 liegt. Ferner weist die Motorverkleidung 22 eine rechte, etwas geneigt verlaufende Seitenwand 26, eine Vorderwand 28 sowie eine in der Zeichnung nicht sichtbare linke Seitenwand und eine Rückwand auf. In der Zeichnung ist links und rechts mit Bezug auf die Fahrtrichtung des Mähdreschers 11 gemäß Fig. 1 angegeben. Das Mähdreschergehäuse 10 weist eine nach vorne gerichtete, in der Zeichnung nicht sichtbare Ernteguteinlaßöffnung auf, an die ein Schrägfördergehäuse 30 angeschlossen ist, das sich von der Ernteguteinlaßöffnung nach vorne und unten erstreckt und am vorderen Ende eine Erntebergungsvorrichtung 34, beispielsweise ein Maisgebiß, aufweisen kann, das in der Zeichnung nur schematisch angedeutet ist.In the drawing, 10 denotes a combine housing of a self-propelled combine 11, which has two front wheels 12 and two rear, controllable wheels 14. The combine housing 10 is provided with a vertically extending side wall 16. Furthermore, the combine 11 has a laterally protruding collecting container 18 which is arranged approximately centrally in the combine, the side walls of the collecting container 18 running outside the side wall 16 of the combine housing 10. A driver's cab 20 is located on the left side of the combine 11 above the front wheels 12 and immediately in front of the collecting container 18. To the right of the driver's cab 20 is an engine cowling 22 which is provided with a horizontally extending cover 24 which is on the same level how the upper edge of the collecting container 18 lies. Furthermore, the engine cover 22 has a right, somewhat inclined side wall 26, a front derwand 28 and a not visible in the drawing left side wall and a rear wall. The drawing shows on the left and right with reference to the direction of travel of the combine 11 according to FIG. 1. Combine harvester housing 10 has a forward-facing crop inlet opening, not visible in the drawing, to which an inclined conveyor housing 30 is connected, which extends forward and downward from the crop inlet opening and can have a harvesting device 34, for example a maize header, at the front end. which is only indicated schematically in the drawing.

Ein sich quer zur Fahrtrichtung erstreckender Verbrennungsmotor 36 (Fig. 3) ist mit einer Welle 38 zum Antrieb eines Zugmittelgetriebes 40 verse-1,im. Ein in etwa rechteckförmig ausgebildeter, vertikai verlaufender Radiator bzw. Motorkühler 42 befindet sich zwischen der rechten Seitenwand 26 und dem rechten Ende des Verbrennungsmotors 36. An den Motorkühler 42 sind in der Zeichnung nicht dargestellte Schlauchleitungen angeschlossen, die Kühlmittel von und zu dem Verbrennungsmotor 36 leiten. Der Motorkühler 42 ist auf einer in der Zeichnung ebenfalls nicht dargestellten Tragvorrichtung angeordnet, die mit einer Tragvorrichtung des Verbrennungsmotors 36 verbunden sein kann. Zwischen dem Motorkühler 42 und dem Verbrennungsmotor 36 befindet sich ein über den Verbrennungsmotor antreibbares Gebläse 44, das aus einer rechteckförmigen Platte 46 mit einer kreisrunden Öffnung 48 besteht, in der ein Gebläserad 50 angeordnet ist. Ferner ist ein Gebläsekanal 52 bis in den Bereich der Öffnung 48 des Gebläses 44 geführt, der ebenso wie das Gebläse auf einer in der Zeichnung nicht dargestellten Halterung montiert sein kann. An den Gebläsekanal 52 schließt sich eine Absaugleitung 54 an, die mit dem rechten Ende 56 des Gebläsekanals 52 lösbar verbunden sein kann. Die Absaugleitung 54 ist an eine Einlaßöffnung 58 angeschlossen, die in einem Luftfilter 60 vorgesehen 'st. Der Luftfilter 60 befindet sich in der rechten t pitenwand 26 des Mähdreschergehäuses 10. Der Luftfilte, "^ weist zahlreiche kleine Öffnungen auf, durch die gereinigte Luft über das Gebläse 44 angesaugt wird. Der Luftfilter 60, der im Ausführungsbeispiel rechteckförmig ausgebildet ist, kann auch einen kreisrunden Querschnitt aufweisen und in einer entsprechenden, in der Seitenwand 26 vorgesehenen Öffnung lösbar montiert werden. Ebenso ist es möglich, den Luftfilter 60 über Scharniere mit der Seitenwand zu verbinden, so daß er nach außen geklappt werden kann, um einen besseren Zugang zu den innen liegenden Teilen des Gebläses 44 und dem zwischen dem Gebläse und dem Luftfilter 60 vorgesehenen Motorkühler 42 zu erhalten. Vor der Einlaßöffnung 48 befindet sich eine Halterung 62 zur Aufnahme einer Achse 64, auf der ein Absaugteil 66 drehbar lagert. Das Absaugteil 66 besteht aus einem U-förmigen Profilträger und ist zur Oberfläche des Luftfilters 60 sowie an seinen beiden äußeren Stirnseiten offen, so daß Reinigungsluft in den Absaugkanal 68 des Absaugteils 66 gelangen kann, die über die Absaugleitung 54 und den Gebläsekanal 52 abgesaugt wird. Die aus dem Gebläsekanal 52 abgeführte Luft gelangt durch die Öffnung 48 des Gebläses 44 in den Bereich des Verbrennungsmotors 36 und tritt über zahlreiche, in der Vorderwand 28 der Motorverkleidung 22 vorgesehene Auslaßöffnungen 69 nach draußen. Als Halterung 62 kann auch das vordere Ende der Absaugleitung 54 dienen.An internal combustion engine 36 (FIG. 3) extending transversely to the direction of travel is provided with a shaft 38 for driving a traction mechanism transmission 40, in FIG. An approximately rectangularly shaped, vertically extending radiator or engine cooler 42 is located between the right side wall 26 and the right end of the internal combustion engine 36. Hose lines, not shown in the drawing, are connected to the engine cooler 42, which conduct coolant to and from the internal combustion engine 36 . The engine cooler 42 is arranged on a support device, also not shown in the drawing, which can be connected to a support device of the internal combustion engine 36. Between the engine cooler 42 and the internal combustion engine 36 there is a blower 44 which can be driven via the internal combustion engine and which consists of a rectangular plate 46 with a circular opening 48 in which an impeller 50 is arranged. Furthermore, a blower duct 52 is guided into the area of the opening 48 of the blower 44, which, like the blower, can be mounted on a holder (not shown in the drawing). A suction line 54 connects to the blower duct 52 and can be detachably connected to the right end 56 of the blower duct 52. The suction line 54 is connected to an inlet opening 58 which is provided in an air filter 60. The air filter 60 is located in the right tepitenwand 26 of the combine housing 10. The air filter, "^ has numerous small openings through which cleaned air is sucked in via the blower 44. The air filter 60, which in the exemplary embodiment is rectangular, can also have a circular cross-section and are detachably mounted in a corresponding opening provided in the side wall 26. It is also possible to connect the air filter 60 to the side wall by means of hinges, so that it can be folded outwards for better access to the internal parts of the blower 44 and the engine cooler 42 provided between the blower and the air filter 60. In front of the inlet opening 48 there is a holder 62 for receiving an axis 64 on which a suction part 66 is rotatably mounted U-shaped profile carrier and is to the surface of the air filter 60 and on its two outer end faces open so that cleaning air can get into the suction channel 68 of the suction part 66, which is sucked off via the suction line 54 and the blower channel 52. The air discharged from the blower duct 52 passes through the opening 48 of the blower 44 into the area of the internal combustion engine 36 and exits through numerous outlet openings 69 provided in the front wall 28 of the engine cowling 22. The front end of the suction line 54 can also serve as the holder 62.

Auf dem Absaugteil 66 befindet sich ein Propeller 67, der mit dem Absaugteil 66 lösbar verbunden sein kann und der so ausgebildet ist, daß er durch die angesaugte Luft, die durch die kleinen Öffnungen in den Luftfilter 60 tritt, in Rotation versetzt wird. Da der Propeller 67 mit dem Absaugteil 66 verbunden ist, wird der Absaugteil 66 ebenfalls angetrieben und streicht an der Oberfläche des Luftfilters 60 vorbei. Der Absaugteil 66 ist mit seinen in Richtung des Luftfilters zeigenden Kanten sc angtlo'dnet, daß nur ein minimaler Spalt zwischen den Kanten des Absaugteils 66 und der Oberfläche des Luftfilters 60 verbleibt.On the suction part 66 there is a propeller 67, which can be detachably connected to the suction part 66 and which is designed such that it is set in rotation by the sucked-in air which enters the air filter 60 through the small openings. Since the propeller 67 is connected to the suction part 66, the suction part 66 is also driven and sweeps past the surface of the air filter 60. The suction part 66 is sc angtlo ' dnet with its edges pointing in the direction of the air filter that only a minimal gap remains between the edges of the suction part 66 and the surface of the air filter 60.

Das in Fig. 3 dargestellte Gebläserad 50 des Gebläses 44 ist auf einerin der Zeichnung nicht dargestellten Achse drehbar gelagert und mit einem Antriebsrad ausgerüstet, das über ein Zugmittelgetriebe mit der Antriebswelle 38 des Verbrennungsmotors 36 verbunden sein kann.The fan wheel 50 of the fan 44 shown in FIG. 3 is rotatably mounted on an axis not shown in the drawing and is equipped with a drive wheel which can be connected to the drive shaft 38 of the internal combustion engine 36 via a traction mechanism gear.

In Fig. 4 und 5 ist ein weiteres Ausführungsbeispiel einer Reinigungsvorrichtung zum Reinigen des Luftfilters 60 dargestellt, der mit einer anders ausgebildeten Absaugleitung 54 ausgerüstet ist. Der in Fig. 4 dargestellte Rückkühler 42' weist einen Kondensator für einen in der Zeichnung nicht dargestellten, in der Fahrerkabine 20 angeordneten Verdampfer auf. Der Kondensator ist aus einzelnen Kühlschlangen 71 gebildet und im Kühler 42' integriert. Die Kühlschlangen 71 des Kondensators sind über eine Ausgangsleitung 70 an den in der Zeichnung nicht dargestellten Verdampfer einer Klimaanlage angeschlossen, dessen Ausgang mit der Zulaufleitung 72 des Kondensators verbunden ist. An den Kühler 42' mit dem zugehörigen Kondensator schließt sich ein Kühlluftgehäuse 74 an. Das Kühlluftgehäuse 74 weist eine im Querschnitt rechteckförmige Einlaßöffnung 78 auf, die durch den siebartigen Luftfilter 60 mit zahlreichen Durchlaßöffnungen vollständig abgedeckt ist. Der Luftfilter 60 gemäß Fig. 4 kann wie im Ausführungsbeispiel gemäß Fig. 3 in der Seitenwand 26 des Mähdreschergehäuses vorgesehen sein. Das Kühlluftgehäuse 74 weist zwei vertikal verlaufende Seitenwände 80 und 82 sowie eine obere Wand 84 und eine untere Wand 86 auf. An den vertikal verlaufenden Seitenwänden 80, 82 ist eine Halterung 88 angeschlossen, die zur Aufnahme einer Achse 64 dient. Die mit ihrem vorderen Ende in der Halterung 88 aufgenommene Achse 64 kann mit ihrem hinteren Ende in dem Luftfilter 60 gelagert sein. Die Halterung ist über in der Zeichnung nicht dargestellte Verbindungselemente lösbar an die Seitenwände 80 und 82 angeschlossen. Auf der Achse 64 lagert drehbar ein Absaugteil 66', der wie das Absaugteil 66 gemäß Fig. 3 aus einem U-Profil besteht. Der äußere Teil des Schenkels des U-profilförmigen Absaugteils ist gemäß Fig. 4 und 5 mit einem Propellerteil 90 versehen, der mit dem mittleren Steg 94 des Absaugteils 66' einen stumpfen Winkel einschließt. An den Propellerteil 90 schließt sich ein Schenkelstück 96 an, das mit dem Steg 94 einen rechten Winkel einschließt. Der gegenüberliegende äußere Schenkel des Absaugteils 66' weist ebenfalls einen nach außen gestellten Propellerteil 92 auf, an den sich ebenfalls ein Schenkelstück 96 anschließt.4 and 5 show a further exemplary embodiment of a cleaning device for cleaning the air filter 60, which is equipped with a differently designed suction line 54. The recooler 42 ′ shown in FIG. 4 has a condenser for an evaporator (not shown in the drawing) arranged in the driver's cab 20. The condenser is formed from individual cooling coils 71 and integrated in the cooler 42 '. The cooling coils 71 of the condenser are connected via an output line 70 to the evaporator, not shown in the drawing, of an air conditioning system, the output of which is connected to the supply line 72 of the condenser. A cool air housing 74 connects to the cooler 42 ′ with the associated condenser. The cooling air housing 74 has an inlet opening 78 which is rectangular in cross section and which is completely covered by the sieve-like air filter 60 with numerous through openings. The air filter 60 according to FIG. 4 can be provided in the side wall 26 of the combine housing, as in the exemplary embodiment according to FIG. 3. The cooling air housing 74 has two vertically extending side walls 80 and 82 as well as an upper wall 84 and a lower wall 86. A holder 88 is connected to the vertically extending side walls 80, 82 and serves to receive an axis 64. The rear end of the axle 64 received in the holder 88 can be supported in the air filter 60 with its rear end. The bracket is releasably attached to the connecting elements, not shown in the drawing Side walls 80 and 82 connected. A suction part 66 'is rotatably mounted on the axis 64 and, like the suction part 66 according to FIG. 3, consists of a U-profile. 4 and 5, the outer part of the leg of the U-shaped suction part is provided with a propeller part 90, which forms an obtuse angle with the central web 94 of the suction part 66 '. A leg piece 96 adjoins the propeller part 90 and encloses a right angle with the web 94. The opposite outer leg of the suction part 66 'also has an outward propeller part 92, to which a leg piece 96 is also connected.

An den Kühler 42' schließt sich ein im Querschnitt rechteckförmiges Gebläsegehäuse 100 an, in dem das Gebläse 44 mit dem Gebläserad 50 vorgesehen ist.The cooler 42 ′ is followed by a blower housing 100 with a rectangular cross section, in which the blower 44 with the blower wheel 50 is provided.

An die im Luftfilter 60 koaxial angeordnete Einlaßöffnung 58 schließt sich die Absaugleitung 54 an, die durch eine im Kühlluftgehäuse 74 vorgesehene Öffnung 102 geführt ist und an eine im Gebläsegehäuse 100 vorgesehene Öffnung 104 angeschlossen ist. Die aus dem Gebläsegehäuse 100 austretende Kühlluft kann über die in der Vorderwand 28 vorgesehenen Öffnungen 69 entweichen.The suction line 54 is connected to the inlet opening 58 arranged coaxially in the air filter 60, which is led through an opening 102 provided in the cooling air housing 74 and is connected to an opening 104 provided in the blower housing 100. The cooling air emerging from the blower housing 100 can escape through the openings 69 provided in the front wall 28.

Der Antrieb des Absaugteils 66' (Fig. 6) kann durch Verwendung eines zusätzlichen Propellerteils 106 verbessert werden, das auf dem gleichen Radius wie das Propellerteil 90 bzw. 92 angeordnet ist. Das Propellerteil 106 besteht aus einem Einschnitt im Steg 94 des Absaugteils 66" und ist zur Oberfläche des Luftfilters 60 abgebogen. Die Oberfläche des Propellerteils 106 kann parallel zur Oberfläche des Propellerteils 90 bzw. 92 verlaufen.The drive of the suction part 66 '(FIG. 6) can be improved by using an additional propeller part 106 which is arranged on the same radius as the propeller part 90 or 92. The propeller part 106 consists of an incision in the web 94 of the suction part 66 ″ and is bent toward the surface of the air filter 60. The surface of the propeller part 106 can run parallel to the surface of the propeller part 90 or 92.

Befindet sich der Mähdrescher 11 im Arbeitseinsatz, so setzen sich normalerweise infolge der Sogwirkung der Kühlluft Schmutzpartikel, beispielsweise Kaffteile, an der Oberfläche des Luftfilters 60 fest und verstopfen die Durchlaßöffnungen, so daß die Kühlleistung des Kühlers absinkt. Durch die vorteilhafte Ausbildung und Anordnung des Absaugteiles 66, das entweder über den Propeller 67 oder über die Propellerteile 90, 92, "S angetrieben wird, können die Schmutzpartikel ohne weiteres von der Oberfläche des Luftfilters abgesaugt werden, da jeweils in dem Abschnitt des Luftfilters 60, der von dem Absaugteil 66 überstrichen wird, kein Anpreßdruck mehr aufgebaut werden kann, der die Schmutzpartikel gegen die Oberfläche des Luftfilters 60 drücken würde. Da die Absaugleitung 54 und der zugehörige Gebläsekanal 52 bis in den Bereich des Gebläses 44 geführt sind, werden die Schmutzpartikel durch die Einlaßöffnung 58 abgesaugt und können über die Absaugleitung 54 und den Gebläsekanal 52 sowie die Auslaßöffnungen 69 in der Vorderwand 28 nach außen abgeführt werden. Durch die Verwendung des Propellers 67 (Fig. 3) läßt sich der Absaugteil 66 relativ schnell antreiben, auch dann, wenn größere Schmutzpartikel als Hindernis dem Absaugteil 66 entgegenwirken, da der Propeller 67 ein relativ großes Drehmoment auf das Absaugteil 66 überträgt. Soll jedoch der Absaugteil 66 nicht zu schnell angetrieben werden, so braucht dieser lediglich mit einem eine kleinere Fläche aufweisenden Propellerteil 90 versehen werden, über das das Absaugteil 66' bzw. 66" angetrieben werden kann. Die Drehzahl des Absaugteiles 66' läßt sich auch dadurch erhöhen, daß neben den Propellerteilen 90 und 92 Rippen .an den Schenkeln des Absaugteiles 66' vorgesehen werden. Der vorteilhafte Einsatz des Propellers 67 bzw. der Propellerteile 90, 92 macht den Einsatz einer besonderen Antriebsvorrichtung für den Absaugteil 66, 66', 66" überflüssig. Außerdem kann bei einer derartigen Ausbildung der Reinigungsvorrichtung der Luftfilter 60 feststehend, d. h. nicht drehbar mit der Seitenwand 26 des Mähdreschers verbunden werden, so daß sich dieser gegenüber der Seitenwand wesentlich leichter abdichten läßt. Der im Ausführungsbeispiel gemäß Fig. 3 und 5 vorgesehene Absaugteil 66' kann auch einen anderen Querschnitt aufweisen. So ist es zum Beispiel möglich, den Absaugteil aus einem halbkreisförmigen bzw. dreieckförmigen Rohrteil herzustellen, ebenso kann sich der Absaugteil 66' von der Mitte her zu seinen äußeren Enden verjüngen. Anstelle nur eines Propellers oder eines Absaugteiles können auch mehrere Propeller bzw. Absaugteile verwendet werden.If the combine 11 is in use, dirt particles, for example coffee parts, normally settle on the surface of the air filter 60 due to the suction effect of the cooling air and clog the through openings, so that the cooling capacity of the cooler drops. Due to the advantageous design and arrangement of the suction part 66, which is driven either by the propeller 67 or by the propeller parts 90, 92, "S, the dirt particles can be easily sucked off the surface of the air filter, since in each case in the section of the air filter 60 , which is swept by the suction part 66, it is no longer possible to build up contact pressure which would press the dirt particles against the surface of the air filter 60. Since the suction line 54 and the associated blower duct 52 are led into the area of the blower 44, the dirt particles become suctioned through the inlet opening 58 and can be discharged to the outside via the suction line 54 and the blower duct 52 and the outlet openings 69 in the front wall 28. By using the propeller 67 (FIG. 3), the suction part 66 can be driven relatively quickly, even then if larger dirt particles act as an obstacle to the suction part 66, since the propeller 67 is on transfers relatively large torque to the suction part 66. If, however, the suction part 66 is not to be driven too quickly, it only needs to be provided with a propeller part 90 having a smaller area, by means of which the suction part 66 'or 66 "can be driven. The speed of the suction part 66' can also be achieved thereby increase that in addition to the propeller parts 90 and 92, ribs are provided on the legs of the suction part 66 '. The advantageous use of the propeller 67 or the propeller parts 90, 92 makes the use of a special drive device for the suction part 66, 66', 66 " superfluous. In addition, with such a configuration of the cleaning device, the air filter 60 can be stationary, i. H. not be rotatably connected to the side wall 26 of the combine harvester, so that it is much easier to seal against the side wall. The suction part 66 'provided in the exemplary embodiment according to FIGS. 3 and 5 can also have a different cross section. For example, it is possible to produce the suction part from a semicircular or triangular tubular part, and the suction part 66 'can also taper from the center to its outer ends. Instead of only one propeller or one suction part, several propellers or suction parts can also be used.

Claims (11)

1. Cleaning arrangement for cleaning an intake surface comprising pass-through openings of an air filter (60) of a cooling assembly provided in a crop gathering machine and with at least one radiator (42) having a fan (44) for an internal combustion engine (36) or of an air conditioner, the dirt particles adhering to the intake surface being released into the open air by way of a suction element (66) provided outside the cooling air housing, a suction pipe connected to the suction element and to a negative pressure side of the cooling air housing, and an outlet opening (69), characterised in that the suction element (66) is rotatably mounted in front of the intake surface (60) and, for the purpose of producing the driving torque, is assembled with at least one propeller element (67, 90, 92, 106) or is itself designed as such.
2. Cleaning arrangement according to claim 1, characterised in that in addition to the first propeller element (67) another propeller element may be associated with the suction element.
3. Cleaning arrangement according to claim 1, characterised in that the intake surface forms the surface of the radiator (42) or the surface of an air filter (60) arranged in front of the radiator as seen in the direction of flow, a continuous inlet opening of the suction element (66) sweeping over substantially the entire intake surface.
4. Cleaning arrangement according to one or more of the preceding claims, characterised in that the suction element (66) has at least one inlet opening (69) at its outer end.
5. Cleaning arrangement according to claim 4, characterised in that the suction element (66) consists of a U section beam open in three directions and whose opposite sides are so turned outwards in the region of the outer end that they form an obtuse angle with the web (94) of the U section beam, while that portion (96) of the side which adjoins the turned-out part (propeller element 90, 92) forms a right angle with the web (94).
, 6. Cleaning arrangement according to one or more of the preceding claims, characterised in that the suction element (66) has a propeller (67) connectable detachably to it and which is arranged offset with respect to the suction element as seen in the direction of rotation.
7. Cleaning arrangement according to one or more of the preceding claims, characterised in that the spindle (64) for receiving the suction element (66) is accommodated in a mounting (62. 88) which is connected to a wall (26) of the crop gathering machine or to the air filter (60) and to a part of the suction pipe (54).
8. Cleaning arrangement according to claim 2, characterised in that the suction element (66) is arranged concentrially with the inlet opening (58) and is received rotatably at the front end of the suction pipe (54).
9. Cleaning arrangement according to one or more of the preceding claims, characterised in that the cross-section of the suction element (66) widens towards the axis of rotation and is of triangular or semi-circular form.
10. Cleaning arrangement according to one or more of the preceding claims, characterised in that the suction pipe (54) is formed of one part or a plurality of parts connectable detachably to one another.
11. Cleaning arrangement according to claim 5, characterised in that the web (94) of the suction element (66") has a slot in the region of both of its outer ends and to the end edge of the slot extending parallel to the longitudinal axis of the suction element (66) there is attached a part (propeller element 106) bent towards the air filter (60), the surface of this part extending substantially parallel to the surface of the other outward- turned part (propeller element 90, 92).
EP81109690A 1981-11-14 1981-11-14 Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator Expired EP0079399B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP81109690A EP0079399B1 (en) 1981-11-14 1981-11-14 Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator
DE8181109690T DE3175314D1 (en) 1981-11-14 1981-11-14 Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator
US06/437,427 US4443236A (en) 1981-11-14 1982-10-28 Self-cleaning screen for the cooling air inlet of an engine enclosure
AU90275/82A AU550499B2 (en) 1981-11-14 1982-11-09 Filtering engine cooling air
CA000415324A CA1196582A (en) 1981-11-14 1982-11-10 Self-cleaning screen for the cooling air inlet of an engine enclosure
ZA828293A ZA828293B (en) 1981-11-14 1982-11-11 Cleaning device for cleaning an air filter
BR8206547A BR8206547A (en) 1981-11-14 1982-11-11 AIR PURIFIER
MX195175A MX154662A (en) 1981-11-14 1982-11-12 IMPROVEMENTS IN AN INTERNAL COMBUSTION ENGINE COOLING SYSTEM FOR AGRICULTURAL VEHICLES
DK504282A DK155451C (en) 1981-11-14 1982-11-12 CLEANING AIR FILTER CLEANER IN A COOLING AIR WITH A COOLING HEAT Blower
ES517312A ES8308965A1 (en) 1981-11-14 1982-11-12 Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81109690A EP0079399B1 (en) 1981-11-14 1981-11-14 Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator

Publications (2)

Publication Number Publication Date
EP0079399A1 EP0079399A1 (en) 1983-05-25
EP0079399B1 true EP0079399B1 (en) 1986-09-10

Family

ID=8188015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109690A Expired EP0079399B1 (en) 1981-11-14 1981-11-14 Cleaning device to clean the air filter of a cooling air-casing comprising a fan-blown radiator

Country Status (10)

Country Link
US (1) US4443236A (en)
EP (1) EP0079399B1 (en)
AU (1) AU550499B2 (en)
BR (1) BR8206547A (en)
CA (1) CA1196582A (en)
DE (1) DE3175314D1 (en)
DK (1) DK155451C (en)
ES (1) ES8308965A1 (en)
MX (1) MX154662A (en)
ZA (1) ZA828293B (en)

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DE19857681C2 (en) * 1998-12-14 2001-03-01 Krone Bernhard Gmbh Maschf Agricultural harvester
US6193772B1 (en) 1999-03-10 2001-02-27 Claas Selbstfahrende Erntemaschinen Gmbh Self-propelled harvesting machine having a selectively engageable suction cleaning device of a filter

Also Published As

Publication number Publication date
DK155451C (en) 1989-08-21
CA1196582A (en) 1985-11-12
US4443236A (en) 1984-04-17
BR8206547A (en) 1983-09-27
ZA828293B (en) 1984-06-27
DE3175314D1 (en) 1986-10-16
ES517312A0 (en) 1983-10-01
AU550499B2 (en) 1986-03-20
EP0079399A1 (en) 1983-05-25
MX154662A (en) 1987-11-13
AU9027582A (en) 1983-05-19
ES8308965A1 (en) 1983-10-01
DK155451B (en) 1989-04-10
DK504282A (en) 1983-05-15

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