EP0364969B1 - Zusammengesetzter Ventilator für Maschinenkühlung und sonstige Anwendungen - Google Patents
Zusammengesetzter Ventilator für Maschinenkühlung und sonstige Anwendungen Download PDFInfo
- Publication number
- EP0364969B1 EP0364969B1 EP19890119287 EP89119287A EP0364969B1 EP 0364969 B1 EP0364969 B1 EP 0364969B1 EP 19890119287 EP19890119287 EP 19890119287 EP 89119287 A EP89119287 A EP 89119287A EP 0364969 B1 EP0364969 B1 EP 0364969B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- spokes
- blades
- hub
- assembly
- 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
Links
Images
Classifications
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
Definitions
- This invention relates generally to fans, and particularly to those of the class used for engine cooling and like applications.
- fan any propeller-type device for imparting motion and acceleration to air or other gases and operating on the centrifugal principle.
- the invention should be construed to comprehend devices that may be commonly classified as blowers.
- Internal-combustion engines such as those used on motor vehicles are normally equipped with a fan as a part of the engine-cooling system. Normally mounted on the water-pump shaft driven from the engine via a fan belt, the engine fan functions to provide a powerful draft of air through the radiator.
- a typical construction of the engine fan according to US-A-3 147 811 or US-A-2 140 017 is such that a set of fan blades have been attached, in the case of US-A-2 140 017 by riveting respectively to arms or spokes radiating from a hub.
- the hub and spokes are a unitary piece of sheet metal.
- US-A-2 098 640 discloses a fan construction with two fan assemblies which have an unequal number of blades with the angles between each pair of blades being different from that of any other adjacent pair of blades, whereby the two fan assemblies are statically balanced. Blades attached to corresponding arms radially extending from a hub member may be arranged in such a way that the arms of the separate assemblies overlap or even are arranged one above the other.
- the fan blades are attached to spokes radially extending from a hub before the fan assemblies are joined together. In each such fan assembly the angular distances between the fan blades are twice as much as those between the fan blades of the assembled fan. Each blade can therefore be attached to the spoke of its respective fan assembly without being hampered by the neighbouring blades.
- the fan can be readily assembled with practically any desired number or size of blades to provide a desired rate of air delivery at constant pressure.
- the spokes of one of the fan assemblies are offset into coplanar relation with those of the other fan assembly so that the blades of the two combined fan assemblies rotate in the same plane.
- the performance of the resulting fan would then be totally free from any adverse effect that might be feared to arise from the joining of the two fan assemblies in axial alignment.
- FIG. 1 the knocked-down fan of this invention will now be described more specifically as adapted for use as an engine cooling-system fan.
- the knocked-down engine fan exemplifying the invention is shown as a combination of two fan assemblies 12 and 12' of like construction disposed one behind the other.
- the front fan assembly 12 is shown by itself in FIG. 2, and the rear fan assembly 12' in FIG. 3.
- FIGS. 2 and 3 show the fan assemblies 12 and 12' in the same angular positions about their axes as they are depicted in FIG. 1.
- the front fan assembly 12 comprises a hub member 14 known to the specialists as a spider because of the resemblance of its appearance, and a plurality of, four in this embodiment, fan blades 16 fastened to the spider 14.
- This spider takes the form of a sheet-metal punching integrally comprising a hub 18 and a set of four arms or spokes 20 extending radially from the hub with a constant angular pitch spacing of 90 degrees.
- the fan blades 16 are riveted at 22 to the respective hub spokes 20 via sheet-metal retainers 24, with each fan blade engaged between one hub spoke 20 and one retainer 24.
- the four fan blades 16 of the front fan assembly 12 employed in this embodiment are angularly spaced from one another much more widely than the eight fan blades of the complete fan 10 of FIG. 1. Therefore, if the fan blades 16 are riveted to the hub spokes 20 before the two fan assemblies 12 and 12' are joined together, the riveting of each fan blade will not be hampered by the neighboring fan blades of the same fan assembly. It will also be understood that the width, or dimension in the circumferential direction of the fan, of each fan blade 16 can be far greater than if the fan 10 were not divided into the two separate assemblies 12 and 12', as has been the case heretofore.
- the hub 18 has a mounting hole 26 of relatively large diameter formed centrally therethrough for use in mounting the fan 10 on, for example, the water-pump shaft of an internal-combustion engine.
- An annular row of six additional mounting holes 28 of smaller diameter are formed concentrically around the central mounting hole 26 for use in fastening the fan 10 to, for example, a fan pulley on the water-pump shaft.
- Another annular row of eight holes 30 in the hub 18, also centered about the hub axis, are rivet holes for use in fastening together the two fan assemblies 12 and 12'.
- the holes 26, 28 and 30 be formed in the hub 18 before the front fan assembly 12 is combined with the rear fan assembly 12' as in FIG. 1.
- the rivet holes 30, in particular, should preferably be formed after the two fan assemblies 12 and 12' are held together in the correct axial and angular positions as in FIG. 1, in order to firmly unite the fan assemblies in the required relative positions.
- the two fan assemblies 12 and 12' are fastened together by rivets 32 passing through the rivet holes 30 and 30' in the hubs 18 and 18'.
- the fan assemblies are united in alignment about the hub axis X-X but with an angular difference equal to half the pitch of the fan blades 16 and 16' of each fan assembly. Since each fan assembly 12 or 12' has four blades with a pitch angle of 90 degrees in this particular embodiment, the two fan assemblies 12 and 12' are joined with an angular displacement of 45 degrees from each other about the hub axis X-X, providing a total of eight fan blades 16 and 16' with an equal pitch spacing of 45 degrees.
- FIG. 4 shows only the spiders 14 and 14' of the fan assemblies 12 and 12' in their correct relative positions, together with only fan blade 16' in order to reveal the twist imparted to each hub spoke 20 or 20'.
- Such twist of the hub spokes 20 and 20', and the resulting angles of the fan blades 16 and 16' with respect to the principal plane of the fan 10, is of course needed for the air-moving function of the fan.
- the two fan assemblies 12 and 12' are nearly identical in construction, a slight difference exists in order to make the fan blades 16 and 16' of both fan assemblies rotate in one and the same plane.
- the hub spokes 20' of the rear fan assembly 12' are offset into coplanar relation with the hub spokes 20 of the front fan assembly 12, as discussed in more detail in the following.
- each hub spoke 20' of the rear fan assembly 12' is each twisted at its region Y, in the immediate vicinity of the hub 18', to hold the associated fan blade 16' at the required angle set forth with reference to FIG. 4.
- each hub spoke 20' is offset forwardly a distance equal to the thickness T of the sheet metal of which the spiders 14 and 14' are made, into coplanar relation with the hub spokes 20 of the front fan assembly 12.
- the mounting holes 26, 26', 28 and 28' and rivet holes 30 and 30' need not necessarily be formed in the hubs 18 and 18' before the fan assemblies 12 and 12' are united as shown in FIG. 1. Only the central mounting holes 26 and 26' may be preformed in the hubs 18 and 18' to facilitate the boring and other operations to be performed subsequently on the hubs.
- the holes in the hubs 18 and 18' may be arranged as shown in FIG. 5 in the hub 18' of the rear fan assembly 12' and as shown in FIG. 7 in the hub 18 of the front fan assembly 12. Since each hub has four spokes in this embodiment, the eight rivet holes 30 and 30' can be of the same arrangement in each hub 18, 18'.
- the arrangement of the six mounting holes 28, 28' must differ between the hubs 18 and 18'.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (4)
- Ein Ventilator zur Motorkühlung oder dergleichen mit zwei vorgefertigten Ventilatorbaugruppen (12,12'), von denen jede eine Vielzahl von im gleichen Winkelabstand angeordneten Speichen (20,20'), die sich radial von einer Nabe (18,18') erstrecken, und eine Vielzahl von identischen Ventilatorblättern (16,16') aufweist, die vernietet oder in anderer Weise radial an den Speichen (20,20') befestigt sind, wobei der Winkelabstand zwischen den Speichen einer Ventilatorbaugruppe gleich dem der Speichen der anderen Ventilatorbaugruppe ist und die Ventilatorblätter (16,16') der einen Ventilatorbaugruppe gleich denen der anderen Ventilatorbaugruppe sind, welche Ventilatorbaugruppen (12,12') in axialer Ausrichtung und winkelbeabstandet zueinander um den halben Winkelabstand der Ventilatorblätter (16,16') einer Baugruppe angeordnet und miteinander durch Vernieten, Verbolzen oder Verschrauben verbunden sind, um einen zusammengesetzten Ventilator zu bilden, bei dem benachbarte Blätter (16,16') der verschiedenen Ventilatorbaugruppen einander teilweise überlappen, und wobei die Speichen (20,20') der einen Ventilatorbaugruppe sich von denen in der anderen Ventilatorbaugruppe nur darin unterscheiden, daß die Speichen (20,20') der einen Ventilatorbaugruppe (12') um einen Abstand gleich der Dicke eines Blechmaterials versetzt sind, aus dem die Speichen (20,20') hergestellt sind, damit die Blätter (16,16') der Ventilatorbaugruppen in der gleichen Ebene drehen.
- Ventilator nach Anspruch 1, dadurch gekennzeichnet, daß jedes Blatt (16,16') zwischen einem Befestigungsteil (24,24') aus Blech und der entsprechenden Speiche (20,20') gehalten ist.
- Ventilator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Speichen (20') der einen Ventilatorbaugruppe (12') einen verdrillten Teil (Y) in unmittelbarer Nachbarschaft zur Nabe (18') zum Versetzen der Speichen aufweisen.
- Ventilator nach Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß ringförmige Reihen von Montageöffnungen (28,28') und/oder von Nietbohrungen (30,30') konzentrisch um eine zentrale Montageöffnung (26,26') der Nabe (28,18') angeordnet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP135007/88 | 1988-10-18 | ||
JP1988135007U JPH0741914Y2 (ja) | 1988-10-18 | 1988-10-18 | 組立ファン |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0364969A1 EP0364969A1 (de) | 1990-04-25 |
EP0364969B1 true EP0364969B1 (de) | 1997-04-16 |
Family
ID=15141752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890119287 Expired - Lifetime EP0364969B1 (de) | 1988-10-18 | 1989-10-17 | Zusammengesetzter Ventilator für Maschinenkühlung und sonstige Anwendungen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0364969B1 (de) |
JP (1) | JPH0741914Y2 (de) |
CA (1) | CA2000296C (de) |
DE (1) | DE68927972T2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005264842A (ja) * | 2004-03-19 | 2005-09-29 | Komatsu Ltd | 冷却ファン及び冷却ファン用セグメント |
CN103671252A (zh) * | 2013-12-18 | 2014-03-26 | 江苏大学 | 一种植物防霜风机叶轮 |
CN108817723A (zh) * | 2018-08-01 | 2018-11-16 | 四川天宇坤建空调设备有限公司 | 一种风机叶片焊接装置及其使用方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2098640A (en) * | 1936-05-15 | 1937-11-09 | Hayes Ind Inc | Fan construction |
US2140017A (en) * | 1938-07-15 | 1938-12-13 | Westinghouse Electric & Mfg Co | Fan construction |
US2328072A (en) * | 1941-06-18 | 1943-08-31 | Edmund E Hans | Fan |
US2500071A (en) * | 1948-03-12 | 1950-03-07 | Edmund E Hans | Fan |
US2853140A (en) * | 1956-01-03 | 1958-09-23 | Brookside Products Company Inc | Resiliently mounted impeller blades |
US3147811A (en) * | 1962-12-24 | 1964-09-08 | Torrington Mfg Co | Fan assembly |
JPS50119008U (de) * | 1974-03-14 | 1975-09-29 | ||
DE2710041A1 (de) * | 1977-03-08 | 1978-09-14 | Torin Corp | Schaufelrad |
JPS57160993U (de) * | 1981-04-03 | 1982-10-08 |
-
1988
- 1988-10-18 JP JP1988135007U patent/JPH0741914Y2/ja not_active Expired - Lifetime
-
1989
- 1989-10-06 CA CA 2000296 patent/CA2000296C/en not_active Expired - Fee Related
- 1989-10-17 DE DE1989627972 patent/DE68927972T2/de not_active Expired - Fee Related
- 1989-10-17 EP EP19890119287 patent/EP0364969B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2000296C (en) | 2000-01-11 |
EP0364969A1 (de) | 1990-04-25 |
JPH0741914Y2 (ja) | 1995-09-27 |
DE68927972T2 (de) | 1997-07-24 |
JPH0256898U (de) | 1990-04-24 |
CA2000296A1 (en) | 1990-04-18 |
DE68927972D1 (de) | 1997-05-22 |
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