EP1050683A2 - Lüfternabe - Google Patents

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Publication number
EP1050683A2
EP1050683A2 EP00500042A EP00500042A EP1050683A2 EP 1050683 A2 EP1050683 A2 EP 1050683A2 EP 00500042 A EP00500042 A EP 00500042A EP 00500042 A EP00500042 A EP 00500042A EP 1050683 A2 EP1050683 A2 EP 1050683A2
Authority
EP
European Patent Office
Prior art keywords
casings
skirt
base
blades
helix
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.)
Withdrawn
Application number
EP00500042A
Other languages
English (en)
French (fr)
Other versions
EP1050683A3 (de
Inventor
Jordi Brull Mir
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.)
Soler and Palau SA
Original Assignee
Soler and Palau SA
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 Soler and Palau SA filed Critical Soler and Palau SA
Publication of EP1050683A2 publication Critical patent/EP1050683A2/de
Publication of EP1050683A3 publication Critical patent/EP1050683A3/de
Withdrawn legal-status Critical Current

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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
    • F04D29/329—Details of the hub
    • 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

  • the present patent application relates, as stated in its title, to "IMPROVEMENTS IN BUILDING CASINGS FOR FANS" which novel manufacturing, conformation and design features fulfil the purpose to which they have been specifically conceived, with a maximum safety and effectiveness.
  • the present invention refers to a novel arrangement of the parts in the helix of fans.
  • Such arrangement is formed by the combination of a number of standardised parts such as a sleeve, a back half casing and a front half casing, both being generally equal to one another and having a semicylindrical configuration with no upper base. From the edge thereof a flap is formed which is provided with a number of openings and flanges located at the side surface thereof. The flap has as many openings as vanes are provided in the helix. Said half casings may be coupled through clamping means provided at the base thereof by combining bores, rods and nuts tightly clamping them in such a way that the skirt of said blades is located therein, which blades are manufactured in a conventional way.
  • said base is provided with such a skirt, which finishes at the only free end thereof in a ringed rim.
  • the skirt and the rim are thoroughly accommodated in a bracket comprising two parts. Once said two parts have been clamped between the back and front half casings, they prevent the vane from being rotated around the axis thereof and radially moved relative to the helix centre.
  • Such clamping system is common regardless of the fan diameter, the number of vanes and the vanes tilt.
  • the prior art related to the present invention is formed by means and parts that enable the assembly of this type of fans; wherein basically two half casings are provided, the back one being different from the front one.
  • Figure no 1 is a cross-section elevational end view of a prior art constructive arrangement for manufacturing this type of fans, where the helix (10) provided with blades (15) mounted between the half casings (12) and (13) is shown.
  • Figure no 2 is an exploded perspective of the arrangement of the present invention.
  • manufacturing of fans, and more particularly manufacturing of helixes having blades (15) starts from manufacturing, by means of moulding or casting, of a back half casing (11) and a front half casing (12) which are quite complementary and different.
  • the skirt (17) and the base (18) of a conventional blade (15) provided with the body (16) are fitted between and clamped to said half casings (11, 12).
  • This constructive system as shown in figure no 1 involves forming of two different half casings (12) and (13), and subsequently fitting the sleeve (13) to enable coupling the helix to the motor.
  • figure no 2 shows how the half casings are formed by a cylindrical body having only one base.
  • the base (23) is provided with chamfered or rounded edges (24) and flaps (25) extending downwardly and perpendicular to the base (23).
  • the flaps (25) are provided with as many regularly distributed openings (26) as vanes are provided in the helix.
  • the base (23) is machined through conventional means and it is provided with a number of bores (27) which purpose will be discussed below.
  • a central passage (28) In the middle part of the base (23) there exists a central passage (28) where the sleeve (33) is to be fitted.
  • Such sleeve (23) is subsequently coupled to the electric motor axis (not shown in the figures).
  • the helix (10), as it can be seen from figure no 2, is provided at one of its ends with a skirt (10 a) finishing at the only end thereof in a rim (10 b).
  • said skirt (10 a) is surrounded by the bracket (38) which comprises two symmetric pieces that are joined forming a single assembly with the corresponding bores (38a) where screws will be fitted thus fastening the helixes (10) as the skirt (10'a) is fitted between the openings (26) once said half casings (21, 22) have been joined.
  • This is helped by the screws (31) provided with rods (30) and flat heads (29).
  • the sleeve (33) is fitted, in turn, inside the half casings (21) and (22), which once assembled form an integral assembly as they are clamped to the rods or screws which pass through the bores (36).
  • Such sleeve (33) is provided at the middle part thereof with a longitudinal bore (39) where the axis of an electric motor that drives the helix is to be fitted.
  • splines (35) extending longitudinally where rods (30) are to be inserted to fix the half casings,
  • Each of the blades (10') are therefore clamped to the helix (20) through the following means:
  • Design of the back and front semicubes (21, 22) is grossly simple and its construction is very light whereby not only a manufacturing costs saving is obtained but a thickness saving relative to the solution shown in figure no 1 is obtained with no structural rigidity decrease.
  • brackets (38) in conjunction with a standardisation of the skirts (10'a) and the rims (10'b) is an added value to the costs reduction as explained above, in the sense that without changing the geometry of the half casings (21, 22) and that of the openings (26) it is possible to use the same type of helix (20) for different types of blades (10') which, in all cases, they will maintain the same geometry features for the skirt (10'a) and the rim (10'b) and therefore different types of blades (10') will be able to use the same helix (20) and bracket (38) arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP00500042A 1999-05-07 2000-03-16 Lüfternabe Withdrawn EP1050683A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9900943A ES2156818B1 (es) 1999-05-07 1999-05-07 Helices con numero variable de alabes de diferente inclinacion.
ES9900943 1999-05-07

Publications (2)

Publication Number Publication Date
EP1050683A2 true EP1050683A2 (de) 2000-11-08
EP1050683A3 EP1050683A3 (de) 2002-10-09

Family

ID=8308273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00500042A Withdrawn EP1050683A3 (de) 1999-05-07 2000-03-16 Lüfternabe

Country Status (2)

Country Link
EP (1) EP1050683A3 (de)
ES (1) ES2156818B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103591045A (zh) * 2013-10-28 2014-02-19 宁波得利时泵业有限公司 转子的基体与叶片的连接结构
CN107143524A (zh) * 2017-07-05 2017-09-08 陕西金翼通风科技有限公司 一种新型轴流通风机用叶片
CN114607643A (zh) * 2022-03-31 2022-06-10 苏州睿昕汽车配件有限公司 一种高强度组装风扇及其组装方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1057954Y (es) * 2004-07-05 2005-01-16 Soler & Palau Ventilador de motor de rotor exterior.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575578A (en) * 1944-03-21 1946-02-25 Colliery Engineering Ltd Improvements in screw fan impellers
DE1021125B (de) * 1953-10-05 1957-12-19 Schmidt Sche Heissdampf Saugzugpropeller mit einzeln einstellbaren Fluegeln
FR1205147A (fr) * 1957-07-05 1960-01-29 Rotor à aubes axiales pour pompes, compresseurs, etc.
GB1085344A (en) * 1965-02-26 1967-09-27 Geoffrey Woods Methods of constructing fan impellers
US5520515A (en) * 1995-05-23 1996-05-28 Bailsco Blades & Casting, Inc. Variable pitch propeller having locking insert
SE508695C2 (sv) * 1996-04-26 1998-10-26 Flaekt Ab Axialfläkthjul
US5899663A (en) * 1996-08-07 1999-05-04 Hunter Fan Company Modular ceiling fan assembly and system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103591045A (zh) * 2013-10-28 2014-02-19 宁波得利时泵业有限公司 转子的基体与叶片的连接结构
CN103591045B (zh) * 2013-10-28 2015-09-23 宁波得利时泵业有限公司 转子的基体与叶片的连接结构
CN107143524A (zh) * 2017-07-05 2017-09-08 陕西金翼通风科技有限公司 一种新型轴流通风机用叶片
CN114607643A (zh) * 2022-03-31 2022-06-10 苏州睿昕汽车配件有限公司 一种高强度组装风扇及其组装方法

Also Published As

Publication number Publication date
ES2156818B1 (es) 2002-03-01
EP1050683A3 (de) 2002-10-09
ES2156818A1 (es) 2001-07-16

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