EP0477612B1 - Luftkühler - Google Patents

Luftkühler Download PDF

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Publication number
EP0477612B1
EP0477612B1 EP91114931A EP91114931A EP0477612B1 EP 0477612 B1 EP0477612 B1 EP 0477612B1 EP 91114931 A EP91114931 A EP 91114931A EP 91114931 A EP91114931 A EP 91114931A EP 0477612 B1 EP0477612 B1 EP 0477612B1
Authority
EP
European Patent Office
Prior art keywords
air
grid
fan
accordance
flow
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 - Lifetime
Application number
EP91114931A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0477612A3 (en
EP0477612A2 (de
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
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 Kueba Kaltetechnik GmbH filed Critical Kueba Kaltetechnik GmbH
Publication of EP0477612A2 publication Critical patent/EP0477612A2/de
Publication of EP0477612A3 publication Critical patent/EP0477612A3/de
Application granted granted Critical
Publication of EP0477612B1 publication Critical patent/EP0477612B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0029—Axial 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 backflow or short-circuit flow occurs both around the housing and in the hub area of the fan, which greatly impairs the performance of the air cooler, in particular when the load on the fan increases 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 blower motor and the air guide grille are arranged behind the blower rotor as seen in the direction of flow. In a particularly advantageous manner, backflow or short-circuit flows 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 easily changed within a wide range using the simplest means, particularly in the case of a fan arranged directly in the area 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 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 adjusted 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 grill parts or 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 for an adaptation 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 guide grille is preferably subdivided into two guide grille parts located opposite one another, preferably each forming a semicircular disk, wherein at least one of the two guide grille parts can be pivoted about a pivot axis running at least essentially 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, for example, by means of short and straight struts lying in front of the air guide grille in the direction of flow, which leads to a simple, inexpensive and low-vibration overall structure.
  • a housing 1 which has an air inlet side and an air outlet side, an evaporator in the form of a plate pack 2 is arranged 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 occurs around the housing 1 to the entry side.
  • the air grille 5 is essentially arranged between the fan rotor 4 and the fan motor 6 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 center axis A of the blower and is 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 grill 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, wherein the different axis parts can in particular be arranged on different silks of the blower motor 6.
  • pivot axis B which runs 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 External 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 (cf. 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 results in a targeted total flow through which despite the Deflection prevents any backflow around the housing towards the air inlet side.
  • adjustable guide grille parts or a part thereof to influence the throw range, 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.
  • programmable control of the drives is expedient.
  • the flow on the outlet side 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 grille in the air shaft 3 is e.g. Can be displaced parallel to the shaft axis via elongated holes 16, 16 '(see FIG. 1) and / or at least pivoted about an axis perpendicular to the shaft axis.
  • 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 in the air grille system, which is particularly useful in the case of a design made of plastic material.

Landscapes

  • 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)
  • Incineration Of Waste (AREA)
  • Furnace Details (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
EP91114931A 1990-09-26 1991-09-04 Luftkühler Expired - Lifetime EP0477612B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4030452A DE4030452A1 (de) 1990-09-26 1990-09-26 Luftkuehler
DE4030452 1990-09-26

Publications (3)

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

Family

ID=6415023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114931A Expired - Lifetime EP0477612B1 (de) 1990-09-26 1991-09-04 Luftkühler

Country Status (7)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774458B1 (fr) * 1998-02-05 2000-03-03 Electricite De France Emetteur reversible d'air chaud ou froid
DE20208250U1 (de) 2002-05-27 2003-10-02 Hans Güntner GmbH, 82256 Fürstenfeldbruck Berührungsschutz für Ventilatoren, insbesondere von Luftkühlern
DE20208554U1 (de) 2002-06-03 2003-10-16 Hans Güntner GmbH, 82256 Fürstenfeldbruck Leitrad für Ventilatoren, insbesondere von Luftkühlern
KR102076668B1 (ko) * 2013-05-24 2020-02-12 엘지전자 주식회사 공기 조화기의 실내기
US9951791B2 (en) * 2014-08-04 2018-04-24 Samsung Electronics Co., Ltd. Air conditioner

Family Cites Families (1)

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

Also Published As

Publication number Publication date
ES2069155T3 (es) 1995-05-01
PT99060A (pt) 1993-11-30
PT99060B (pt) 1999-01-29
EP0477612A3 (en) 1992-12-09
EP0477612A2 (de) 1992-04-01
DE59104137D1 (de) 1995-02-16
ATE116733T1 (de) 1995-01-15
DE4030452A1 (de) 1992-04-02
GR3015630T3 (en) 1995-06-30
DK0477612T3 (da) 1995-03-13

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