EP0477612A2 - Air cooler - Google Patents

Air cooler Download PDF

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Publication number
EP0477612A2
EP0477612A2 EP91114931A EP91114931A EP0477612A2 EP 0477612 A2 EP0477612 A2 EP 0477612A2 EP 91114931 A EP91114931 A EP 91114931A EP 91114931 A EP91114931 A EP 91114931A EP 0477612 A2 EP0477612 A2 EP 0477612A2
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EP
European Patent Office
Prior art keywords
air
blower
baffle
flow
parts
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.)
Granted
Application number
EP91114931A
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German (de)
French (fr)
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EP0477612B1 (en
EP0477612A3 (en
Inventor
Werner Rolles
Paul Jyrek
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.)
Kueba Kaltetechnik GmbH
Original Assignee
Kueba Kaltetechnik GmbH
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Publication of EP0477612A2 publication Critical patent/EP0477612A2/en
Publication of EP0477612A3 publication Critical patent/EP0477612A3/en
Application granted granted Critical
Publication of EP0477612B1 publication Critical patent/EP0477612B1/en
Anticipated expiration legal-status Critical
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0018Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0029Axial fans

Definitions

  • the invention relates to an air cooler, consisting of a housing having an air inlet and an air outlet side, in which a lamella packet through which coolant pipes are provided, a blower driven by an electric motor, which is arranged in the flow direction of the air behind the lamella packet, and one Air guide grille attached to the air outlet.
  • a general problem with such air coolers is that a return or short-circuit flow occurs both around the housing and in the hub area of the blower, which in particular severely impairs the performance of the air cooler when the load on the blower becomes greater with increasing union. This leads to, that more defrosting phases are required, which lead to an increase in energy consumption. In addition, an increase in the working temperature of the drive motor creates an additional load on this motor, which can result in a shortened service life.
  • An air cooler of the type mentioned at the outset has already become known (DE 38 26 588 A1), in which both the fan motor and the air guide grille are arranged behind the fan rotor, as seen in the direction of flow. In a particularly advantageous manner, reverse or short-circuit currents are prevented and the thermal load on the drive motor is reduced.
  • the direction of the outlet flow is predetermined by appropriate mounting or alignment of the air cooler.
  • the aim of the invention is to provide an air cooler of the type mentioned at the outset, in which the direction of the air flow occurring on the outlet side can be changed without difficulty within a wide range, even with the blower arranged directly in the region of the air guide grille.
  • the object is achieved according to the invention in that the air baffle is subdivided into at least two baffle parts and that at least one of the baffle parts is adjustable towards the residual flow, at least in the sense of deflecting the associated outlet-side flow part.
  • the direction of the air flow occurring on the outlet side can be adjusted over a wide range, since the deflection of the adjusted Baffle part assigned to the outlet-side flow part in the direction of the residual flow also directly influences this residual flow and is deflected in the desired direction. It is always ensured that any backflow around the housing to the air inlet side is prevented.
  • the adjustment device can be implemented in a very compact and space-saving manner.
  • All the guide vane parts, or at least the larger part thereof, are preferably adjustable, the guide vane parts advantageously being able to be adjustable independently of one another in order to achieve the greatest possible variability.
  • a particularly expedient embodiment of the invention is characterized in that the guide vane parts or a part thereof are adjustable in the sense of widening and / or in the sense of narrowing the flow on the outlet side.
  • Such a widening or narrowing of the cooling air flow is in particular in turn for an adjustment rooms of different lengths and different fillings are a great advantage.
  • the lattice adjustment can be done manually or by motor, a motorized adjustment being particularly advantageous if the cooling units are difficult to access or inaccessible, as is the case, for. B. is the case with coolers mounted on high ceilings.
  • the air baffle is preferably divided into baffle parts of the same size, so that the flow portion assigned to the respectively displaced baffle part is large enough to influence the residual flow to a sufficient extent and to divert it in the desired direction.
  • the grating part it is also conceivable to choose the grating part to be adjusted or pivoted somewhat larger than the rest of the grating.
  • the air guide grille is designed as a circular disk which is preferably concentric with the blower center axis and is divided into sector-shaped guide grille parts.
  • the respectively adjustable guide grill part is preferably pivotable about a pivot axis lying in the grid plane.
  • This pivot axis can be at least adjacent to the central grid axis perpendicular to the grid plane.
  • the pivot axis preferably intersects this central grid axis.
  • the air baffle is preferably divided into two opposite baffle parts, preferably each forming a semicircular disk, at least one of the two baffle parts being pivotable about an at least substantially pivot axis extending along the separating line between them.
  • the air baffle is expediently held in a collar-shaped, in particular cylindrical, air shaft, which is preferably formed by a housing attachment.
  • the blower can also be fastened in this housing approach, for example by means of short and straight struts lying in front of the air guide grille in the flow direction, which leads to a simple, inexpensive and low-vibration overall construction.
  • an evaporator is arranged in the form of a plate pack 2 which is penetrated by tubes carrying coolant and is equipped with a defrosting device.
  • the electric motor 6 of the blower 10 is fastened in the housing attachment 3 by means of short, straight struts 7.
  • the preferably cylindrical housing extension 3 is closed off from the outside by an air guide grille 5.
  • the air guide grille has a web mesh structure and preferably has square individual openings 8 (cf. FIG. 2).
  • This air guide grille 5 achieves a very pronounced rectification of the air flow, i.e. a parallel flow practically emerges from the air guide grille 5, the directional effect being so strong that even with a heavily loaded fan, i.e. with considerable icing, no backflow around the housing 1 to the entry side occurs.
  • the air baffle 5 is essentially arranged between the fan rotor 4 and the fan motor 6 which is freely accessible on the downstream side. This arrangement results in a defined flow against the blower motor 6, which is also given when the blower is heavily loaded. Convection cooling of the motor 6 is obtained, which can significantly increase its service life.
  • the air baffle 5 is designed as a circular disk concentric with the blower center axis A and divided into two equally sized sector-shaped light grid parts 5 ', 5' '.
  • At least one of the two semicircular disk-shaped guide grid parts 5 ', 5' ' can be pivoted about a pivot axis B.
  • This pivot axis B lies in the grating plane and in the present case intersects the blower center axis A perpendicular thereto, which coincides with the grating center axis C.
  • the pivot axis B thus also coincides with the dividing line between the two semicircular disks 5 ′, 5 ′′.
  • a respective pivotable guide grid part 5 ′, 5 ′′ has two bearing sleeves 11 through which the pivot axis B extends, which in turn is attached to the housing 1.
  • the pivot axis B can be in two parts, the different axis parts being able to be arranged in particular on different silks of the blower motor 6.
  • pivot axis B running parallel to the dividing line between the two semicircular disks 5 ', 5' 'is at a certain distance from this central dividing line. If, for example, both sector-shaped guide vane parts 5 ', 5' 'can be pivoted, this results in two separate pivot axes which are parallel to one another.
  • the air baffle 5 formed by the two baffle parts 5 ′, 5 ′′ has a recess 9 into which the end of the blower motor 6 facing the blower rotor 4 extends.
  • This recess may be slightly larger than that Outside dimensions of the blower motor 6, so that the respective guide grill part 5 ', 5''can be pivoted without any problems (cf. FIG. 1).
  • the sector-shaped guide vane part 5 '' e.g. pivoted towards the residual flow in the sense of a deflection of the assigned outlet-side flow component (see solid representation of part 5 ′′ in FIG. 1)
  • the overall result is a flow indicated by the solid arrows and deflected upward.
  • the flow portion of the non-pivoted guide vane part 5 ' is influenced by the flow portion of the pivoted guide vane part 5' 'in such a way that the flow portion assigned to part 5' is also deflected in the desired direction and, in turn, a specifically directed total flow results, despite which the Deflection prevents any backflow around the housing towards the air inlet side.
  • adjustable guide grille parts or a part thereof it is often also appropriate for the adjustable guide grille parts or a part thereof to influence the throwing distance, to expand and / or to Are adjustable to narrow the outlet flow.
  • the guide vane parts in question can be adjusted manually and / or by motor.
  • a programmable control of the drives is expedient.
  • the outlet-side flow can also be influenced in a particularly advantageous manner in the desired manner in that the entire fan, including the fan rotor 4 and the fan motor 6, is preferably adjustable, including the air grille 5 in the air shaft or housing attachment 3.
  • the fan together with the air baffle in the air shaft 3 is e.g. Can be displaced parallel to the shaft axis and / or at least pivoted about an axis perpendicular to the shaft axis via elongated holes 16, 16 '(see FIG. 1).
  • Fig. 1 is also indicated by dash-dotted lines an air baffle 12 which is adjustably attached to the housing 1 to influence the outlet-side flow via slots 14 and corresponding fasteners.
  • the air baffle 12 has a section parallel to the outlet-side end face 18 of the housing 1, via which it is adjustably attached to the end face. This section is followed by a middle section of the air baffle 12, which partially surrounds the air shaft or housing section 3. An adjoining section of the air baffle 12 which is acted upon by the outflowing air is shaped in accordance with the flow deflection to be brought about.
  • the air baffle 12 is expediently rotatable about the air shaft or housing extension 3 and / or radially displaceable with respect to the air shaft.
  • the struts 7 can also be integrated into the air grille system, which is particularly useful in the case of a design made of plastic material.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Incineration Of Waste (AREA)
  • Furnace Details (AREA)

Abstract

An air cooler which is equipped with an air-directing grate 5 is described. The air-directing grate 5 is divided into at least two directing-grate parts 5', 5''. At least one of the directing-grate parts 5', 5'' is pivotable at least in the sense of a deflection of the assigned outlet-side flow portion towards the residual flow. <IMAGE>

Description

Die Erfindung betrifft einen Luftkühler, bestehend aus einem eine Lufteinlaß- und eine Luftauslaßseite aufweisenden Gehäuse, in dem ein von Kühlmittel führenden Rohren durchsetztes Lamellenpaket vorgesehen ist, einem von einem Elektromotor angetriebenen Gebläse, das in Strömungsrichtung der Luft hinter dem Lamellenpaket angeordnet ist, sowie einem luftauslaßseitig angebrachten Luftleitgitter.The invention relates to an air cooler, consisting of a housing having an air inlet and an air outlet side, in which a lamella packet through which coolant pipes are provided, a blower driven by an electric motor, which is arranged in the flow direction of the air behind the lamella packet, and one Air guide grille attached to the air outlet.

Ein allgemeines Problem bei derartigen Luftkühlern ist, daß sich sowohl um das Gehäuse herum als auch im Nabenbereich des Gebläses eine Rück- bzw. Kurzschlußströmung einstellt, welche die Leistungsfähigkeit des Luftkühlers insbesondere dann stark beeinträchtigt, wenn die Belastung des Gebläses bei zunehmender Vereinsung stärker wird. Dies führt dazu, daß häufiger Abtauphasen erforderlich sind, die zu einer Erhöhung des Energieverbrauchs führen. Außerdem entsteht durch eine sich einstellende Erhöhung der Arbeitstemperatur des Antriebsmotors eine zusätzliche Belastung dieses Motors, die eine verkürzte Lebensdauer zur Folge haben kann.A general problem with such air coolers is that a return or short-circuit flow occurs both around the housing and in the hub area of the blower, which in particular severely impairs the performance of the air cooler when the load on the blower becomes greater with increasing union. This leads to, that more defrosting phases are required, which lead to an increase in energy consumption. In addition, an increase in the working temperature of the drive motor creates an additional load on this motor, which can result in a shortened service life.

Es ist bereits ein Luftkühler der eingangs genannten Art bekannt geworden (DE 38 26 588 Al), bei dem sowohl der Gebläsemotor als auch das Luftleitgitter in Strömungsrichtung gesehen hinter dem Gebläserotor angeordnet sind. Dadurch werden in besonders vorteilhafter Weise Rück- bzw. Kurzschlußströmungen verhindert und die Wärmebelastung des Antriebsmotors reduziert.An air cooler of the type mentioned at the outset has already become known (DE 38 26 588 A1), in which both the fan motor and the air guide grille are arranged behind the fan rotor, as seen in the direction of flow. In a particularly advantageous manner, reverse or short-circuit currents are prevented and the thermal load on the drive motor is reduced.

Bei einer derartigen Anordnung von Gebläse und Luftleitgitter wird die Richtung der Austrittsströmung durch entsprechende Montage bzw. Ausrichtung des Luftkühlers vorgegeben.With such an arrangement of fan and air guide grille, the direction of the outlet flow is predetermined by appropriate mounting or alignment of the air cooler.

Ziel der Erfindung ist es, einen Luftkühler der eingangs genannten Art zu schaffen, bei dem insbesondere auch bei unmittelbar im Bereich des Luftleitgitters angeordnetem Gebläse mit einfachsten Mitteln in weiten Grenzen problemlos die Richtung der auslaßseitig auftretenden Luftströmung veränderbar ist.The aim of the invention is to provide an air cooler of the type mentioned at the outset, in which the direction of the air flow occurring on the outlet side can be changed without difficulty within a wide range, even with the blower arranged directly in the region of the air guide grille.

Die Aufgabe wird nach der Erfindung dadurch gelöst, daß das Luftleitgitter in wenigstens zwei Leitgitterteile unterteilt ist und daß wenigstens eines der Leitgitterteile zumindest im Sinne einer Ablenkung des zugeordneten auslaßseitigen Strömungsanteils zur Restströmung hin verstellbar ist.The object is achieved according to the invention in that the air baffle is subdivided into at least two baffle parts and that at least one of the baffle parts is adjustable towards the residual flow, at least in the sense of deflecting the associated outlet-side flow part.

Aufgrund dieser Ausbildung ist die Richtung der auslaßseitig auftretenden Luftströmung über einen weiten Bereich hinweg verstellbar, da durch die Ablenkung des dem verstellten Leitgitterteil zugeordneten auslaßseitigen Strömungsanteils in Richtung der Restströmung auch unmittelbar diese Restströmung beeinflußt und in die gewünschte Richtung abgelenkt wird. Dabei ist stets sichergestellt, daß jegliche Rückströmung um das Gehäuse herum zur Lufteintrittsseite hin verhindert wird.Due to this design, the direction of the air flow occurring on the outlet side can be adjusted over a wide range, since the deflection of the adjusted Baffle part assigned to the outlet-side flow part in the direction of the residual flow also directly influences this residual flow and is deflected in the desired direction. It is always ensured that any backflow around the housing to the air inlet side is prevented.

Da bereits eine geringe Teilgitterverschwenkung eine ausgeprägte Richtungssteuerung der Gesamtströmung ermöglicht, kann die Verstelleinrichtung sehr kompakt und raumsparend realisiert werden.Since even a slight pivoting of the partial grille enables a pronounced directional control of the overall flow, the adjustment device can be implemented in a very compact and space-saving manner.

Von besonderem Vorteil ist auch, daß in Abhängigkeit von der Gitterverstellung eine Veränderung, insbesondere Verringerung der Leistung des Verdampfers durch eine Verringerung der Lüfterdrehzahl möglich ist.It is also particularly advantageous that a change, in particular a reduction in the performance of the evaporator, is possible by reducing the fan speed, depending on the grille adjustment.

Bevorzugt sind sämtliche Leitgitterteile oder zumindest der größere Teil davon verstellbar, wobei zur Erzielung einer möglichst großen Variabilität die Leitgitterteile zweckmäßigerweise unabhängig voneinader verstellbar sein können.All the guide vane parts, or at least the larger part thereof, are preferably adjustable, the guide vane parts advantageously being able to be adjustable independently of one another in order to achieve the greatest possible variability.

Eine jeweils optimale Anpassung an unterschiedliche Gegebenheiten, wie insbesondere im Falle räumlich langer oder kurzer Kühlräume sowie voller oder lediglich teilweise gefüllter Kühlräume, ist dadurch möglich, daß die Leitgitterteile bzw. ein Teil davon im Sinne einer Beeinflussung der Wurfweite der Kaltluftströmung verstellbar sind.An optimal adaptation to different circumstances, especially in the case of spatially long or short cold rooms and full or only partially filled cold rooms, is possible in that the guide grill parts or part thereof are adjustable in the sense of influencing the throw of the cold air flow.

Eine besonders zweckmäßige Ausfünrungsvariante der Erfindung zeichnet sich dadurch aus, daß die Leitgitterteile bzw. ein Teil davon im Sinne einer Aufweitung und/oder im Sinne einer Verengung der auslaßseitigen Strömung verstellbar sind. Eine solche Aufweitung bzw. Verengung des Kühlluftstromes ist insbesondere wiederum für eine Anpassung an unterschiedlich lange und unterschiedlich gefüllte Räume von großem Vorteil.A particularly expedient embodiment of the invention is characterized in that the guide vane parts or a part thereof are adjustable in the sense of widening and / or in the sense of narrowing the flow on the outlet side. Such a widening or narrowing of the cooling air flow is in particular in turn for an adjustment rooms of different lengths and different fillings are a great advantage.

Die Gitterverstellung kann manuell oder motorisch erfolgen, wobei eine motorische Verstellung insbesondere dann von Vorteil ist, wenn die Kühlaggregate schlecht zugänglich oder unzugänglich sind, wie dies z. B. bei an hohen Decken montierten Kühlern der Fall ist.The lattice adjustment can be done manually or by motor, a motorized adjustment being particularly advantageous if the cooling units are difficult to access or inaccessible, as is the case, for. B. is the case with coolers mounted on high ceilings.

Das Luftleitgitter ist vorzugsweise in gleich große Leitgitterteile unterteilt, so daß der dem jeweils verstellten Leitgitterteil zugeordnete Strömungsanteil groß genug ist, auch die Restströmung in ausreichendem Maße zu beeinflußen und in die gewünschte Richtung umzulenken. Grundsätzlich ist jedoch auch denkbar, das zu verstellende bzw. zu verschwenkende Gitterteil etwas größer als den Rest des Gitters zu wählen.The air baffle is preferably divided into baffle parts of the same size, so that the flow portion assigned to the respectively displaced baffle part is large enough to influence the residual flow to a sufficient extent and to divert it in the desired direction. In principle, however, it is also conceivable to choose the grating part to be adjusted or pivoted somewhat larger than the rest of the grating.

Gemäß einer praktisch besonders zweckmäßigen Ausführungsvariante ist das Luftleitgitter als vorzugsweise zur Gebläsemittelachse konzentrische Kreisscheibe ausgebildet und in sektorförmige Leitgitterteile unterteilt.According to a practically particularly expedient embodiment variant, the air guide grille is designed as a circular disk which is preferably concentric with the blower center axis and is divided into sector-shaped guide grille parts.

Das jeweils verstellbare Leitgitterteil ist vorzugsweise um eine in der Gitterebene liegende Schwenkachse verschwenkbar. Diese Schwenkachse kann der zur Gitterebene senkrechten Gittermittelachse zumindest benachbart sein. Vorzugsweise schneidet die Schwenkachse diese Gittermittelachse.The respectively adjustable guide grill part is preferably pivotable about a pivot axis lying in the grid plane. This pivot axis can be at least adjacent to the central grid axis perpendicular to the grid plane. The pivot axis preferably intersects this central grid axis.

Bevorzugt ist das Luftleitgitter in zwei einander gegenüberliegende, vorzugsweise jeweils eine Halbkreisscheibe bildende Leitgitterteile unterteilt, wobei zumindest eines der beiden Leitgitterteile um eine zumindest im wesentlichen entlang der dazwischen liegenden Trennlinie verlaufende Schwenkachse verschwenkbar ist.The air baffle is preferably divided into two opposite baffle parts, preferably each forming a semicircular disk, at least one of the two baffle parts being pivotable about an at least substantially pivot axis extending along the separating line between them.

Indem das Luftleitgitter zwischen dem Gebläserotor und dem abströmseitig frei zugänglich angebrachten Gebläsemotor angeordnet ist, wird eine gezielte Anströmung des Elektromotors erreicht, so daß auch bei zunehmender Belastung des Gebläses noch eine sehr ausgeprägte Anströmung und damit Kühlung des Motors sichergestellt ist, und zwar praktisch unabhängig von der gewählten Anströmrichtung.By arranging the air baffle between the blower rotor and the blower motor, which is freely accessible on the downstream side, a targeted flow against the electric motor is achieved, so that even with increasing load on the blower, a very pronounced flow and thus cooling of the motor is ensured, practically independently of the selected flow direction.

Das Luftleitgitter ist zweckmäßigerweise in einem kragenförmigen, insbesondere zylindrischen Luftschacht gehaltert, der vorzugsweise durch einen Gehäuseansatz gebildet ist. In diesem Gehäuseansatz kann auch das Gebläse beispielsweise mittels in Strömungsrichtung vor dem Luftleitgitter liegender, kurzer und gerader Streben befestigt sein, was zu einem einfachen, kostengünstigen und schwingungsarmen Gesamtaufbau führt.The air baffle is expediently held in a collar-shaped, in particular cylindrical, air shaft, which is preferably formed by a housing attachment. The blower can also be fastened in this housing approach, for example by means of short and straight struts lying in front of the air guide grille in the flow direction, which leads to a simple, inexpensive and low-vibration overall construction.

Das zuvor im Zusammenhang mit einem Luftkühler beschriebenen Prinzip der definierten Strömungsbeeinflussung kann grundsätzlich in gleicher Weise auch bei einer Heizvorrichtung angewandt werden.The principle of defined flow control described above in connection with an air cooler can in principle also be applied in the same way to a heating device.

Weitere vorteilhafte Ausführungsvarianten der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiment variants of the invention are specified in the subclaims.

Die Erfindung wird im folgenden an Hand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert; in dieser zeigt:

Figur 1
eine schematische Darstellung eines Luftkühlers, und
Figur 2
ein Leitgitterteil des im Luftkühler eingesetzten Luftleitgitters.
The invention is explained below using an exemplary embodiment with reference to the drawing; in this shows:
Figure 1
a schematic representation of an air cooler, and
Figure 2
a guide grill part of the air guide grill used in the air cooler.

In einem eine Lufteinlaßseite und eine Luftauslaßseite aufweisenden Gehäuse 1 ist ein Verdampfer in Form eines Lamellenpakets 2 angeordnet, das von Kühlmittel führenden Rohren durchsetzt und mit einer Abtaueinrichtung ausgestattet ist.In a housing 1 which has an air inlet side and an air outlet side, an evaporator is arranged in the form of a plate pack 2 which is penetrated by tubes carrying coolant and is equipped with a defrosting device.

In einem abströmseitigen, zylindrischen Luftschacht, der als kragenförmiger Gehäuseansatz 3 ausgebildet ist, ist ein Gebläse 10 mit einem mehrflügeligen Rotor 4 angeordnet, der von einem Elektromotor 6 angetrieben wird. Der Elektromotor 6 des Gebläses 10 ist mittels kurzer, gerader Streben 7 im Gehäuseansatz 3 befestigt.A blower 10 with a multi-bladed rotor 4, which is driven by an electric motor 6, is arranged in a downstream, air duct, which is designed as a collar-shaped housing extension 3. The electric motor 6 of the blower 10 is fastened in the housing attachment 3 by means of short, straight struts 7.

Nach außen hin ist der vorzugsweise zylindrische Gehäuseansatz 3 durch ein Luftleitgitter 5 abgeschlossen.The preferably cylindrical housing extension 3 is closed off from the outside by an air guide grille 5.

Das Luftleitgitter besitzt eine Stegmaschenstruktur und weist vorzugsweise quadratische Einzelöffnungen 8 auf (vgl. Figur 2). Durch dieses Luftleitgitter 5 wird eine sehr ausgeprägte Gleichrichtung des Luftstroms erzielt, d.h., es tritt aus dem Luftleitgitter 5 praktisch eine Parallelströmung aus, wobei die Richtwirkung so stark ist, daß selbst bei stark belastetem Gebläse, d.h. bei erheblicher Vereisung, keinerlei Rückströmung um das Gehäuse 1 herum zur Eintrittsseite hin auftritt.The air guide grille has a web mesh structure and preferably has square individual openings 8 (cf. FIG. 2). This air guide grille 5 achieves a very pronounced rectification of the air flow, i.e. a parallel flow practically emerges from the air guide grille 5, the directional effect being so strong that even with a heavily loaded fan, i.e. with considerable icing, no backflow around the housing 1 to the entry side occurs.

Das Luftleitgitter 5 ist im wesentlichen zwischen dem Gebläserotor 4 und dem abströmseitig frei zugänglich angebrachten Gebläsemotor 6 angeordnet. Durch diese Anordnung erfolgt eine definierte Anströmung des Gebläsemotors 6, welche auch noch bei stark belastetem Gebläse gegeben ist. Man erhält eine Konvektionskühlung des Motors 6, die dessen Lebensdauer wesentlich erhöhen kann.The air baffle 5 is essentially arranged between the fan rotor 4 and the fan motor 6 which is freely accessible on the downstream side. This arrangement results in a defined flow against the blower motor 6, which is also given when the blower is heavily loaded. Convection cooling of the motor 6 is obtained, which can significantly increase its service life.

Das Luftleitgitter 5 ist als zur Gebläsemittelachse A konzentrische Kreisscheibe ausgebildet und in zwei gleich große sektorförmige Lichtgitterteile 5', 5'' unterteilt.The air baffle 5 is designed as a circular disk concentric with the blower center axis A and divided into two equally sized sector-shaped light grid parts 5 ', 5' '.

Zumindest eines der beiden halbkreisscheibenförmigen Leitgitterteile 5', 5'' ist um eine Schwenkachse B verschwenkbar.At least one of the two semicircular disk-shaped guide grid parts 5 ', 5' 'can be pivoted about a pivot axis B.

Diese Schwenkachse B liegt in der Gitterebene und schneidet im vorliegenden Fall die dazu senkrechte Gebläsemittelachse A, die mit der Gittermittelachse C zusammenfällt. Die Schwenkachse B fällt beim vorliegenden Ausführungsbeispiel somit auch mit der Trennlinie zwischen den beiden Halbkreisscheiben 5', 5'' zusammen.This pivot axis B lies in the grating plane and in the present case intersects the blower center axis A perpendicular thereto, which coincides with the grating center axis C. In the present exemplary embodiment, the pivot axis B thus also coincides with the dividing line between the two semicircular disks 5 ′, 5 ″.

Wie in Figur 2 zu erkennen ist, weist ein jeweils verschwenkbares Leitgitterteil 5', 5'' zwei Lagerhülsen 11 auf, durch die sich die Schwenkachse B erstreckt, die ihrerseits am Gehäuse 1 angebracht ist. Die Schwenkachse B kann zweiteilig sein, wobei die verschiedenen Achsteile insbesondere auf unterschiedlichen Seiden des Gebläsemotors 6 angeordnet sein können.As can be seen in FIG. 2, a respective pivotable guide grid part 5 ′, 5 ″ has two bearing sleeves 11 through which the pivot axis B extends, which in turn is attached to the housing 1. The pivot axis B can be in two parts, the different axis parts being able to be arranged in particular on different silks of the blower motor 6.

Es ist auch denkbar, daß die parallel zur Trennlinie zwischen den beiden Halbkreisscheiben 5', 5'' verlaufende Schwenkachse B einen gewissen Abstand zu dieser zentralen Trennlinie aufweist. Sind beispielsweise beide sektorförmigen Leitgitterteile 5', 5'' verschwenkbar, so ergeben sich in diesem Falle zwei getrennte, zueinander parallele Schwenkachsen.It is also conceivable that the pivot axis B running parallel to the dividing line between the two semicircular disks 5 ', 5' 'is at a certain distance from this central dividing line. If, for example, both sector-shaped guide vane parts 5 ', 5' 'can be pivoted, this results in two separate pivot axes which are parallel to one another.

Das durch die beiden Leitgitterteile 5', 5'' gebildete Luftleitgitter 5 weist eine Ausnehmung 9 auf, in die sich das dem Gebläserotor 4 zugewandte Ende des Gebläsemotors 6 erstreckt. Diese Ausnehmung kann ggf. etwas größer als die Außenabmessungen des Gebläsemotors 6 sein, so daß das jeweilige Leitgitterteil 5', 5'' problemlos verschwenkbar ist (vgl. Figur 1).The air baffle 5 formed by the two baffle parts 5 ′, 5 ″ has a recess 9 into which the end of the blower motor 6 facing the blower rotor 4 extends. This recess may be slightly larger than that Outside dimensions of the blower motor 6, so that the respective guide grill part 5 ', 5''can be pivoted without any problems (cf. FIG. 1).

Ist das halbkreisscheibenförmige Leitgitterteil 5'' zur Bildung einer ebenen Gitterscheibe mit dem gegenüberliegenden halbkreisscheibenförmigen Leitgitterteil 5' ausgerichtet (siehe gestrichelte Darstellung des Teils 5'' in Fig. 1), so ergibt sich die durch gestrichelte Pfeile angedeutete, zu den Achsen A, C parallele Luftströmung.If the semicircular disk-shaped guide grid part 5 '' is aligned with the opposite semicircular disk-shaped guide grid part 5 'to form a planar grid disk (see the dashed representation of part 5' 'in FIG. 1), the axes A, C are indicated by the dashed arrows parallel air flow.

Wird dagegen das sektorförmige Leitgitterteil 5'' z.B. im Sinne einer Ablenkung des zugeordneten auslaßseitigen Strömungsanteils zur Restströmung hin verschwenkt (vgl. durchgezogene Darstellung des Teil 5'' in Fig. 1), so ergibt sich insgesamt eine mit den durchgezogenen Pfeilen angedeutete, nach oben abgelenkte Strömung. Hierbei wird der Strömungsanteil des nicht verschwenkten Leitgitterteils 5' durch den Strömungsanteil des verschwenkten Leitgitterteils 5'' so beeinflußt, daß der dem Teil 5' zugeordnete Strömungsanteil ebenfalls in die gewünschte Richtung abgelenkt wird und sich wiederum eine gezielt gerichtete Gesamtströmung ergibt, durch die trotz der Auslenkung jegliche Rückströmung um das Gehäuse herum zur Lufteintrittsseite hin verhindert wird.On the other hand, if the sector-shaped guide vane part 5 '' e.g. pivoted towards the residual flow in the sense of a deflection of the assigned outlet-side flow component (see solid representation of part 5 ″ in FIG. 1), the overall result is a flow indicated by the solid arrows and deflected upward. Here, the flow portion of the non-pivoted guide vane part 5 'is influenced by the flow portion of the pivoted guide vane part 5' 'in such a way that the flow portion assigned to part 5' is also deflected in the desired direction and, in turn, a specifically directed total flow results, despite which the Deflection prevents any backflow around the housing towards the air inlet side.

Grundsätzlich ist auch denkbar, die beiden einander gegenüberliegenden Leitgitterteile 5', 5'' derart gegensinnig zu verschwenken, daß sich eine leicht divergente Strömung ergibt.In principle, it is also conceivable to pivot the two opposite guide vane parts 5 ', 5' 'in opposite directions in such a way that a slightly divergent flow results.

Häufig ist es auch zwechmäßig, wenn die verstellbaren Leitgitterteile oder ein Teil davon im Sinne einer Beeinflussung der Wurfweite, im Sinne einer Aufweitung und/oder im Sinne einer Verengung der auslaßseitigen Strömung verstellbar sind.It is often also appropriate for the adjustable guide grille parts or a part thereof to influence the throwing distance, to expand and / or to Are adjustable to narrow the outlet flow.

Grundsätzlich können die betreffenden Leitgitterteile manuell und/oder motorisch verstellbar sein. Im Falle einer motorischen Verstellung ist eine programmierbare Ansteuerung der Antriebe zweckmäßig.In principle, the guide vane parts in question can be adjusted manually and / or by motor. In the case of a motorized adjustment, a programmable control of the drives is expedient.

Die auslaßseitige Strömung läßt sich auf besonders vorteilhafte Weise auch dadurch in der gewünschten Weise beeinflussen, daß das gesamte, den Gebläserotor 4 sowie den Gebläsemotor 6 umfassende Gebläse vorzugsweise einschließlich des Luftleitgitters 5 im Luftschacht bzw. Gehäuseansatz 3 verstellbar ist.The outlet-side flow can also be influenced in a particularly advantageous manner in the desired manner in that the entire fan, including the fan rotor 4 and the fan motor 6, is preferably adjustable, including the air grille 5 in the air shaft or housing attachment 3.

Hierbei ist das Gebläse zusammen mit dem Luftleitgitter im Luftschacht 3 z.B. über Langlöcher 16, 16' (vgl. Fig.1) parallel zur Schachtachse verschiebbar und/oder zumindest um eine zur Schachtachse senkrechte Achse verschwenkbar.Here, the fan together with the air baffle in the air shaft 3 is e.g. Can be displaced parallel to the shaft axis and / or at least pivoted about an axis perpendicular to the shaft axis via elongated holes 16, 16 '(see FIG. 1).

In Fig. 1 ist ferner durch strichpunktierte Linien ein Luftleitblech 12 angedeutet, das zur Beeinflussung der auslaßseitigen Strömung über Langlöcher 14 und entsprechende Befestigungsmittel verstellbar am Gehäuse 1 angebracht ist. Hierzu weist das Luftleitblech 12 einen zur auslaßseitigen Stirnfläche 18 des Gehäuses 1 parallelen Abschnitt auf, über den es verstellbar an der Stirnfläche angebracht ist. An diesen Abschitt schließt sich ein mittlerer Abschitt des Luftleibleches 12 an, der den Luftschacht bzw. Gehäuseabschnitt 3 teilweise umschließt. Ein sich daran anschließender, von der ausströmenden Luft beaufschlagter Abschnitt des Luftleitbleches 12 ist entsprechend der herbeizuführenden Strömungsablenkung geformt.In Fig. 1 is also indicated by dash-dotted lines an air baffle 12 which is adjustably attached to the housing 1 to influence the outlet-side flow via slots 14 and corresponding fasteners. For this purpose, the air baffle 12 has a section parallel to the outlet-side end face 18 of the housing 1, via which it is adjustably attached to the end face. This section is followed by a middle section of the air baffle 12, which partially surrounds the air shaft or housing section 3. An adjoining section of the air baffle 12 which is acted upon by the outflowing air is shaped in accordance with the flow deflection to be brought about.

Zur Erzielung der gewünschten Strömungsbeeinflussung ist das Luftleitblech 12 zweckmäßigerweise um den Luftschacht bzw. Gehäuseansatz 3 drehbar und/oder bezüglich des Luftschachtes radial verschiebbar.To achieve the desired flow control, the air baffle 12 is expediently rotatable about the air shaft or housing extension 3 and / or radially displaceable with respect to the air shaft.

Die Streben 7 können auch in das Luftleitgittersystem integriert sein, was sich insbesondere bei einer Ausführung aus Kunststoffmaterial anbietet.The struts 7 can also be integrated into the air grille system, which is particularly useful in the case of a design made of plastic material.

BezugszeichenlisteReference symbol list

11
Gehäusecasing
22nd
LamellenblockSlat block
33rd
Gehäuseansatz / LuftschachtHousing attachment / air duct
44th
GebläserotorFan rotor
55
LuftleitgitterAir baffle
5'5 '
LeitgitterteilGuide grill part
5''5 ''
LeitgitterteilGuide grill part
66
GebläsemotorBlower motor
77
BefestigungsstrebenFastening struts
88th
EinzelöffnungenSingle openings
99
AusnehmungRecess
1010th
Gebläsefan
1111
LagerhülsenBearing sleeves
1212
LuftleitblechAir baffle
1414
LanglöcherElongated holes
1616
LanglöcherElongated holes
16'16 '
LanglöcherElongated holes
1818th
StirnflächeFace
AA
GebläsemittelachseFan center axis
BB
SchwenkachseSwivel axis
CC.
GittermittelachseGrid center axis

Claims (10)

Luftkühler, bestehend aus einem eine Lufteinlaß- und eine Luftauslaßseite aufweisenden Gehäuse, in dem ein von Kühlmittel führenden Rohren durchsetztes Lamellenpaket vorgesehen ist, einem von einem Elektromotor angetriebenen Gebläuse, das in Strömungsrichtung der Luft hinter dem Lamellenpaket angeordnet ist, sowie einem luftauslaßseitig angebrachten Luftleitgitter,
dadurch gekennzeichnet,
daß das Luftleitgitter (5) in wenigstens zwei Leitgitterteile (5', 5'') unterteilt ist und daß wenigstens eines der Leitgitterteile (5', 5'') zumindest im Sinne einer Ablenkung des zugeordneten auslaßseitigen Strömungsanteils zur Restströmung hin im Sinne einer Beeinflussung der Wurfweite der auslaßseitigen Strömung verstellbar ist.
Air cooler, consisting of a housing having an air inlet and an air outlet side, in which a plate pack through which coolant pipes are provided, a blower driven by an electric motor, which is arranged behind the plate pack in the direction of flow of air, and an air grille on the air outlet side,
characterized by
that the air baffle (5) is subdivided into at least two baffle parts (5 ', 5'') and that at least one of the baffle parts (5', 5 '') is deflected at least in the sense of influencing the associated flow component on the outlet side towards the residual flow the throw of the flow on the outlet side is adjustable.
Luftkühler nach Anspruch 1,
dadurch gekennzeichnet,
daß die Leitgitterteile (5', 5'') bzw. ein Teil davon im Sinne einer Aufweitung und / oder im Sinne einer Verengung der auslaßseitigen Strömung verstellbar sind.
Air cooler according to claim 1,
characterized by
that the guide vane parts (5 ', 5'') or part thereof can be adjusted in the sense of widening and / or in the sense of narrowing the flow on the outlet side.
Luftkühler nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Leitgitterteile (5', 5'') manuell und / oder motorisch verstellbar sind, wobei die motorische Verstellung vorzugsweise programmierbar ist.
Air cooler according to claim 1 or 2,
characterized by
that the guide grill parts (5 ', 5'') can be adjusted manually and / or by motor, the motorized adjustment preferably being programmable.
Luftkühler nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß das Luftleitgitter (5) als vorzugsweise zur Gebläsemittelachse (A) konzentrische Kreisscheibe ausgebildet und in sektorförmige Luftgitterteile (5', 5'') unterteilt ist.
Air cooler according to one of claims 1 to 3,
characterized by
that the air guide grille (5) is designed as a circular disk which is preferably concentric with the blower center axis (A) and is divided into sector-shaped air grille parts (5 ', 5'').
Luftkühler nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß das jeweilige Leitgitterteil (5', 5'') um eine in der Gitterebene liegende Schwenkachse (B) verschwenkbar und insbesondere das jeweilige Leitgitterteil (5', 5'') um eine Schwenkachse (B) verschwenkbar ist, die der zur Gitterebene senkrechten Gittermittelachse (C) zumindest benachbart ist und diese vorzugsweise schneidet.
Air cooler according to one of claims 1 to 4,
characterized by
that the respective guide grill part (5 ', 5'') can be pivoted about a pivot axis (B) lying in the grid plane and in particular the respective guide grill part (5', 5 '') can be pivoted about a pivot axis (B) which is perpendicular to the grid plane Grid center axis (C) is at least adjacent and preferably intersects this.
Luftkühler nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
daß das Luftleitgitter (5) in zwei einander gegenüberliegende , vorzugsweise jeweils eine Halbkreisscheibe bildende Leitgitterteile (5', 5'') unterteilt ist und zumindest eines der beiden Leitgitterteile (5', 5'') um eine zumindest im wesentlichen entlang der dazwischenliegenden Trennlinie verlaufende Schwenkachse (B) verschwenkbar ist.
Air cooler according to one of claims 1 to 5,
characterized by
that the air baffle (5) is divided into two opposite baffle parts (5 ', 5''), each forming a semicircular disk, and at least one of the two baffle parts (5', 5 '') around an at least substantially along the separating line between them extending pivot axis (B) is pivotable.
Luftkühler nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß das Luftleitgitter (5) zwischen dem Gebläserotor (4) und dem abströmseitig frei zugänglich angebrachten Gebläsemotor (6) angeordnet ist, wobei das Luftleitgitter (5) eine Ausnehmung (9) aufweist, in die sich das dem Gebläserotor (4) zugewandte Ende des Gebläsemotors (6) erstreckt.
Air cooler according to one of claims 1 to 6,
characterized by
that the air baffle (5) is arranged between the blower rotor (4) and the blower motor (6) freely accessible on the downstream side, the air baffle (5) having a recess (9) into which the end of the blower rotor (4) faces Blower motor (6) extends.
Luftkühler nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß das Luftleitgitter (5) in einem kragenförmigen, vorzugsweise zylindrischen Luftschacht gehaltert ist, der vorzugsweise durch einen Gehäuseansatz (3) gebildet ist.
Air cooler according to one of claims 1 to 7,
characterized by
that the air guide grille (5) is held in a collar-shaped, preferably cylindrical air shaft, which is preferably formed by a housing extension (3).
Luftkühler nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
daß das gesamte, den Gebläserotor (4) sowie den Gebläsemotor (6) umfassende Gebläse vorzugsweise einschließlich des Luftleitgitters (5) im das Gebläse aufnehmenden Luftschacht (3) verstellbar ist, wobei insbesondere das Gebläse (4, 6) vorzugsweise einschließlich des Luftleitgitters (5) im Luftschacht (3) vorzugsweise über Langlöcher (16, 16') parallel zur Schachtachse verschiebbar und / oder zumindest um eine zur Schachtachse senkrechte Achse verschwenkbar ist.
Air cooler according to one of claims 1 to 8,
characterized by
that the entire blower, including the blower rotor (4) and the blower motor (6), preferably including the air guide grille (5) in the air duct (3) receiving the blower, is adjustable, in particular the blower (4, 6) preferably including the air guide grille (5 ) in the air shaft (3), preferably via slots (16, 16 '), can be displaced parallel to the shaft axis and / or at least pivoted about an axis perpendicular to the shaft axis.
Luftkühler nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
daß zur Beeinflussung der auslaßseitigen Strömung ein vorzugsweise über Langlöcher (14) verstellbar am Gehäuse (1) angebrachtes Luftleitblech (12) vorgesehen ist, das insbesondere um den Luftschacht bzw. Gehäuseansatz (3) drehbar und vorzugsweise bezüglich des Luftschachtes (3) radial verschiebbar ist.
Air cooler according to one of claims 1 to 9,
characterized by
that an air baffle plate (12), preferably adjustable via elongated holes (14) on the housing (1), is provided to influence the flow on the outlet side, which is rotatable in particular about the air shaft or housing extension (3) and preferably radially displaceable with respect to the air shaft (3) .
EP91114931A 1990-09-26 1991-09-04 Air cooler Expired - Lifetime EP0477612B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4030452 1990-09-26
DE4030452A DE4030452A1 (en) 1990-09-26 1990-09-26 AIR COOLER

Publications (3)

Publication Number Publication Date
EP0477612A2 true EP0477612A2 (en) 1992-04-01
EP0477612A3 EP0477612A3 (en) 1992-12-09
EP0477612B1 EP0477612B1 (en) 1995-01-04

Family

ID=6415023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114931A Expired - Lifetime EP0477612B1 (en) 1990-09-26 1991-09-04 Air cooler

Country Status (7)

Country Link
EP (1) EP0477612B1 (en)
AT (1) ATE116733T1 (en)
DE (2) DE4030452A1 (en)
DK (1) DK0477612T3 (en)
ES (1) ES2069155T3 (en)
GR (1) GR3015630T3 (en)
PT (1) PT99060B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774458A1 (en) * 1998-02-05 1999-08-06 Electricite De France Reversible hot and cold air ejector for building
EP1367262A2 (en) 2002-05-27 2003-12-03 Hans Güntner GmbH Fan guards, particularly for air coolers
EP1369595A2 (en) 2002-06-03 2003-12-10 Hans Güntner GmbH Stator for fans, particularly for air coolers
US20140345835A1 (en) * 2013-05-24 2014-11-27 Lg Electronics Inc. Indoor unit for air conditioner
US20160032942A1 (en) * 2014-08-04 2016-02-04 Samsung Electronics Co., Ltd. Air conditioner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826588A1 (en) * 1988-08-04 1990-02-08 Schmitz Kuehler Baierbrunn AIR COOLER

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826588A1 (en) * 1988-08-04 1990-02-08 Schmitz Kuehler Baierbrunn AIR COOLER

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774458A1 (en) * 1998-02-05 1999-08-06 Electricite De France Reversible hot and cold air ejector for building
EP1367262A2 (en) 2002-05-27 2003-12-03 Hans Güntner GmbH Fan guards, particularly for air coolers
EP1369595A2 (en) 2002-06-03 2003-12-10 Hans Güntner GmbH Stator for fans, particularly for air coolers
US20140345835A1 (en) * 2013-05-24 2014-11-27 Lg Electronics Inc. Indoor unit for air conditioner
US9752816B2 (en) * 2013-05-24 2017-09-05 Lg Electronics Inc. Indoor unit for air conditioner
US20160032942A1 (en) * 2014-08-04 2016-02-04 Samsung Electronics Co., Ltd. Air conditioner
CN105333499A (en) * 2014-08-04 2016-02-17 三星电子株式会社 Air conditioner
US9951791B2 (en) * 2014-08-04 2018-04-24 Samsung Electronics Co., Ltd. Air conditioner
CN105333499B (en) * 2014-08-04 2020-07-21 三星电子株式会社 Air conditioner

Also Published As

Publication number Publication date
ATE116733T1 (en) 1995-01-15
DK0477612T3 (en) 1995-03-13
EP0477612B1 (en) 1995-01-04
GR3015630T3 (en) 1995-06-30
DE4030452A1 (en) 1992-04-02
EP0477612A3 (en) 1992-12-09
PT99060B (en) 1999-01-29
PT99060A (en) 1993-11-30
DE59104137D1 (en) 1995-02-16
ES2069155T3 (en) 1995-05-01

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