EP0338549B1 - Appareil de protection pour un ventilateur d'un moteur à combustion - Google Patents

Appareil de protection pour un ventilateur d'un moteur à combustion Download PDF

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Publication number
EP0338549B1
EP0338549B1 EP89107101A EP89107101A EP0338549B1 EP 0338549 B1 EP0338549 B1 EP 0338549B1 EP 89107101 A EP89107101 A EP 89107101A EP 89107101 A EP89107101 A EP 89107101A EP 0338549 B1 EP0338549 B1 EP 0338549B1
Authority
EP
European Patent Office
Prior art keywords
safety device
lattice
fan
clamping
fan housing
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
EP89107101A
Other languages
German (de)
English (en)
Other versions
EP0338549A3 (en
EP0338549A2 (fr
Inventor
Hans-Peter Mahlberg
Richard Müller
Paul Dr. Neussel
Franz-Josef Steffen
Holger Zimmermann
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to AT89107101T priority Critical patent/ATE79162T1/de
Publication of EP0338549A2 publication Critical patent/EP0338549A2/fr
Publication of EP0338549A3 publication Critical patent/EP0338549A3/de
Application granted granted Critical
Publication of EP0338549B1 publication Critical patent/EP0338549B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Definitions

  • the invention relates to a protective device according to the preamble of claim 1.
  • Protective devices are known which are arranged in front of the inlet ring of a blower of an internal combustion engine and are connected to the housing of the blower by means of a screw connection.
  • the protective device preferably consists of wires with a circular cross section, which are arranged in a ring or spiral shape.
  • the grille is elastically supported on relatively high stilts, making it oscillatable and prone to resonance. Due to strong vibrations of the blower, individual grid wires of the protective device break off easily and can be pulled into the blower. The consequence of this is a blower failure and often even a complete damage to the engine.
  • screws, washers, rubber elements and bushings are required to fasten the protective device, which makes the assembly of the protective device and thereby also the repair of the fan more difficult.
  • a blower housing for electronic devices is known from EP-A 190 835.
  • Several octagonal openings are arranged in the blower housing, which form the inlet for the cooling air.
  • a grille is arranged in front of the openings, which lies against the blower housing via a clamp connection.
  • the invention has for its object to provide a protective device for a fan of an internal combustion engine, the fan being driven by a V-belt.
  • the protective device should be designed so that it is easy to install despite the V-belt and offers sufficient protection.
  • the protective device can be clamped onto the blower in such a way that it almost encloses the V-belt and is easy to assemble.
  • a plate in particular a disc, is advantageously arranged in the center of the grid, to which the clamping brackets are attached.
  • the clamping brackets consist of wires whose diameter is larger than the diameter of the grid wires. It is advantageous to use simple structural steel z. B. ST 37 K to use.
  • the grid sections adjacent to the fourth tensioning bracket are advantageously arranged axially offset.
  • the opening of the blower housing and the tensioning bracket, as seen in the axial direction of the grille / are designed in the form of a segment of a circle, and the outermost circumferential region seen in the axial direction is bent approximately at right angles to the blower opening in the axial direction. This outermost circumferential area clasps the blower housing and forms the clamp connection.
  • the outermost circumferential region advantageously has a semicircular cross section as seen in the circumferential direction and each of the two brackets of the outermost circumferential region touches the blower housing at two points.
  • the blower housing expediently has a groove into which the outermost peripheral region engages with its semicircular design. As a result, the grid is fixed axially.
  • the clamping brackets at the inlet radius of the fan housing are advantageously designed with an exemption from the latter.
  • the clamping brackets expediently have a kink between the plate and the outermost circumferential region, so that the grid is attached in a space-saving manner.
  • the two isosceles sides of the tensioning brackets advantageously form an angle of approximately 45 degrees. This has the advantage that each of these isosceles sides engages the blower housing at a distance from the other isosceles side and the clamping connection is thereby improved.
  • the lattice from concentrically arranged rings or from spirally bent lattice bars.
  • Figures 1 and 2 show a protective device according to the invention for a blower of an internal combustion engine in cross section and in plan view.
  • 1 is. shown in cross section, a Nachleitradgebläse, an impeller 11 with blades 12 is surrounded by a blower housing 2.
  • the impeller 11 is connected to a drive roller 13 which is arranged on the axis 16 of the impeller 11 and is driven via a V-belt 14.
  • the blower housing 2 has on its end facing the drive roller 13 on its circumference a groove 15 into which a protective device according to the invention engages via a clamp connection.
  • the protective device consists of a grid 1 formed from wires, which is fixed on four approximately identical clamping brackets 3, for example by welding seams, which are distributed around the circumference at a distance from one another and rest on the blower housing 2 via a clamp connection.
  • the clamping brackets 3 are designed in the form of a segment of a circle as viewed in the axial direction of the grille 1, the outermost circumferential region 5 as viewed in the axial direction being bent approximately at right angles to the blower opening in the axial direction.
  • the outermost circumferential region 5 has a semicircular cross section 6, seen in the circumferential direction, which engages in the groove 15 of the blower housing 2.
  • the two isosceles sides of the clamping bracket 3 enclose an angle of approximately 45 degrees.
  • the grid 1 is arranged on four clamping brackets 3, three of which are each offset by 90 degrees to one another and the fourth clamping bracket 3a to its two adjacent clamping brackets 3 includes an angle of over 90 degrees on the one hand and an angle of less than 90 degrees on the other.
  • the V-belt 14 there is space for the V-belt 14 on both sides of the fourth tensioning bracket 3a. If the angle between the fourth tensioning bracket 3a and its adjacent tensioning bracket 3 is less than 90 degrees, this area is provided for the load strand, while the other side of the fourth tensioning bracket 3a faces the empty strand of the V-belt 14. So that the grid is to be arranged close to the V-belt 14, the grid sections 10a, 10b adjacent to the fourth tensioning bracket 3a are arranged axially offset.
  • a plate 4 In the center of the grid 1 there is a plate 4, here a disc, to which the tensioning brackets are attached.
  • This plate 4 is arranged concentrically in front of the drive roller 13 and can cover it completely.
  • each of the two brackets of the outermost circumferential region 5 touches the blower housing 2 at two points 7a, 7b, as a result of which the protective device is axially fixed.
  • the clamping bracket 3 can apply the necessary clamping force, they advantageously consist of wires whose diameter is larger than the diameter of the grid wires. Furthermore, it is advantageous to carry out the clamping bracket 3 at the inlet radius of the blower housing 2 with a clearance 8 to the latter. This measure serves for better sound insulation.
  • the tensioning brackets 3 advantageously have a kink 9 between the plate 4 and the outermost peripheral region 5.
  • FIG. 2 shows an advantageous embodiment in which the grid 1 is formed from rings arranged concentrically. It can also be advantageous, as shown in FIG. 3, if the lattice consists of spirally bent lattice bars.
  • the protective device is constructed almost symmetrically and the center of gravity is therefore in the axis of the blower or the grille 1. As a result, the protective device is low-vibration and does not tend to resonate so easily.
  • the grille or the protective device can be easily removed and can later be re-assembled simply by pushing or pushing it onto the blower housing 2. Due to the large number of equal parts and the use of simple structural steel, i. H. no spring steel, the protective device is inexpensive to manufacture.
  • the torsional strength of the protective device is achieved by an automatic slight incorporation of the outermost peripheral region 5 into the blower housing 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (10)

1. Appareil de protection pour un ventilateur, comprenant une grille (1) formée de fils, placée sur l'ouverture du boîtier de ventilateur (2) et qui est reliée au boîtier (2) par une liaison par pincement, appareil
caractérisé en ce que le ventilateur est entraîné par un moteur à combustion interne par l'intermédiaire d'une courroie trapézoïdale (14) et la grille (1) est fixée sur quatre étriers tendeurs (3) sensiblement identiques dont trois sont décalés de 90° et dont le quatrième étrier tendeur (3a) forme d'un côté avec son étrier voisin, d'une part un angle dépassant 90° et de l'autre côté, un angle inférieur à 90°.
2. Appareil de protection selon la revendication 1,
caractérisé par une plaque (4) prévue au milieu de la grille (1), notamment une rondelle sur laquelle sont fixés les étriers tendeurs (3).
3. Appareil de protection selon la revendication 1 ou 2,
caractérisé en ce que les étriers tendeurs (3) sont des fils dont le diamètre est supérieur au diamètre des fils formant la grille.
4. Appareil de protection selon l'une des revendications 1 à 3,
caractérisé en ce que les segments de grille (10a, 10b) voisins du quatrième étrier tendeur (3a) sont décalés axialement.
5. Appareil de protection selon l'une des revendications 1 à 4,
caractérisé en ce que l'ouverture du boîtier (2) du ventilateur est de forme circulaire et les étriers tendeurs (3) sont en forme de segments de cercle lorsqu'ils sont vue dans la direction axiale de la grille (1) et la zone périphérique (5) la plus à l'extérieur dans la direction axiale, est recourbée sensiblement à l'équerre par rapport à l'ouverture du ventilateur, dans la direction axiale.
6. Appareil de protection selon la revendication 5,
caractérisé en ce que la zone périphérique (5) la plus à l'extérieur, présente une section (6) de forme semi-circulaire lorsqu'elle est vue dans la direction périphérique.
7. Appareil de protection selon la revendication 5 ou 6,
caractérisé en ce que chacun des deux étriers de la zone périphérique (5) la plus à l'extérieur, touchent le boîtier (2) du ventilateur en deux points (7a, 7b).
8. Appareil de protection selon l'une des revendications 5 à 7,
caractérisé en ce que les étriers tendeurs (3) comportent un dégagement (8) au niveau du rayon d'entrée du boîtier (2) du ventilateur.
9. Appareil de protection selon l'une des revendications 5 à 8,
caractérisé en ce que les étriers tendeurs (3) présentent un coude (9) entre la plaque (4) et la zone périphérique (5) extérieure.
10. Appareil des protection selon l'une des revendications 5 à 9,
caractérisé en ce que les deux côtés à branches identiques de l'étrier tendeur (3) font entre-eux un angle d'environ 45°.
EP89107101A 1988-04-21 1989-04-20 Appareil de protection pour un ventilateur d'un moteur à combustion Expired - Lifetime EP0338549B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107101T ATE79162T1 (de) 1988-04-21 1989-04-20 Schutzvorrichtung fuer ein geblaese einer brennkraftmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3813431 1988-04-21
DE3813431A DE3813431A1 (de) 1988-04-21 1988-04-21 Schutzvorrichtung fuer ein geblaese einer brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP0338549A2 EP0338549A2 (fr) 1989-10-25
EP0338549A3 EP0338549A3 (en) 1990-01-03
EP0338549B1 true EP0338549B1 (fr) 1992-08-05

Family

ID=6352563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107101A Expired - Lifetime EP0338549B1 (fr) 1988-04-21 1989-04-20 Appareil de protection pour un ventilateur d'un moteur à combustion

Country Status (3)

Country Link
EP (1) EP0338549B1 (fr)
AT (1) ATE79162T1 (fr)
DE (2) DE3813431A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025132401A1 (fr) * 2023-12-22 2025-06-26 Stego Holding Gmbh Dispositif de protection, ventilateur et procédé de production d'un dispositif de protection

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337631A1 (de) * 1993-11-04 1995-05-11 Kloeckner Humboldt Deutz Ag Schutzvorrichtung für ein Gebläse einer Brennkraftmaschine
NL9402187A (nl) * 1994-12-22 1996-08-01 Helpman Intellectual Propertie Huishoudelijke ventilator.
DE10111397B4 (de) * 2001-03-09 2010-04-15 Ebm-Papst Mulfingen Gmbh & Co. Kg Schutzgitter für Ventilatoren
DE102005028104A1 (de) * 2005-06-16 2006-12-21 Stadtmüller, Uwe Tragstrebe für Schutzgitter mit Wandringauflage und Verfahren zu ihrer Herstellung
DE102015200439A1 (de) * 2015-01-14 2016-07-14 Siemens Aktiengesellschaft Anordnung, Getriebeverdichter
DE102015201704A1 (de) 2015-01-30 2016-08-04 Ebm-Papst Mulfingen Gmbh & Co. Kg Aufnahmesystem

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575561A (en) * 1944-03-24 1946-02-22 Maurice Geoffrey Woods Improvements in and relating to electric fans
US2728541A (en) * 1954-10-29 1955-12-27 Chelsea Products Inc Means to support a motor driven fan from a carrying panel
US2968437A (en) * 1955-10-31 1961-01-17 William R Mobley Method and means for circulating air under pressure of radially propelled horizontal jets
DE2345539A1 (de) * 1973-09-10 1975-03-20 Siemens Ag Schutzgitter fuer axialluefter
US4657485A (en) * 1984-04-19 1987-04-14 Hartwig Richard K Ceiling fan guard
GB8501657D0 (en) * 1985-01-23 1985-02-27 Loh Kg Rittal Werk Fan mounting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025132401A1 (fr) * 2023-12-22 2025-06-26 Stego Holding Gmbh Dispositif de protection, ventilateur et procédé de production d'un dispositif de protection

Also Published As

Publication number Publication date
ATE79162T1 (de) 1992-08-15
EP0338549A3 (en) 1990-01-03
DE58901963D1 (de) 1992-09-10
EP0338549A2 (fr) 1989-10-25
DE3813431A1 (de) 1989-11-02

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