EP0593860A1 - Boîtier helicoidal pour soufflante radial - Google Patents

Boîtier helicoidal pour soufflante radial Download PDF

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Publication number
EP0593860A1
EP0593860A1 EP93111713A EP93111713A EP0593860A1 EP 0593860 A1 EP0593860 A1 EP 0593860A1 EP 93111713 A EP93111713 A EP 93111713A EP 93111713 A EP93111713 A EP 93111713A EP 0593860 A1 EP0593860 A1 EP 0593860A1
Authority
EP
European Patent Office
Prior art keywords
deep
housing part
collar
housing
side wall
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
EP93111713A
Other languages
German (de)
English (en)
Other versions
EP0593860B1 (fr
Inventor
André Bottländer
Eckhard Kucharczyk
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.)
Siegenia Aubi KG
Original Assignee
Siegenia Frank KG
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
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Application filed by Siegenia Frank KG filed Critical Siegenia Frank KG
Publication of EP0593860A1 publication Critical patent/EP0593860A1/fr
Application granted granted Critical
Publication of EP0593860B1 publication Critical patent/EP0593860B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans

Definitions

  • the invention relates to a spiral housing made of plastic material for radial fans for decentralized room ventilation, which has a closed side wall, a side wall provided with a suction opening and a spiral circumferential wall arranged between them, which is provided with a tangentially adjoining outlet opening, consisting of two along a normal housing parts interconnected to the plane of the fan axis.
  • Radial blowers with a spiral housing made of plastic material are used as cooling and / or circulating air blowers in household appliances and are required for this purpose in quantities that enable large-scale production.
  • the spiral housing is manufactured as injection molded parts that have a design adapted to the intended use.
  • the known radial fans with spiral housings made of plastic material are not readily usable, because the spiral housings must be given a different design.
  • the injection molding tools for the manufacture of the spiral housing require a high cost, but ventilation devices for decentralized room ventilation are only required in relatively small numbers, it is not worthwhile to provide special injection molding tools for this, which then require a very long payback period.
  • radial fans are used in room ventilation devices, usually with spiral casings made of sheet metal are equipped and are available relatively inexpensively.
  • the radial fans cause a relatively strong intrinsic noise resulting from vibrations of the sheet metal housing during operation, which must be counteracted by additional measures, in particular elastic suspensions and brackets.
  • the aim of the invention is to create a spiral housing made of plastic material, which can still be produced inexpensively even in small quantities and which has a high internal damping, which enables a simplified installation of the radial blowers in room ventilation devices, in particular sound insulation fans.
  • the object is achieved in a simple manner by that the housing parts are formed by vacuum deep-drawing bodies made of plate material, each of which has an angled rim or collar, that the circumferential contour of the first deep-drawn body is dimensioned larger by the plate material thickness than the circumferential contour of the second deep-drawn body, that the rim or collar of the second deep-drawn body has a height which corresponds approximately to the inside width of the volute casing, that a larger number of lugs protrude outward from the end edges of the rim or collar on the second deep-drawing body along the circumferential contour, and that the first deep-drawn body in its rim or collar near the side wall contains recesses in which the lugs on the rim or collar of the second deep-drawn body can be locked.
  • Forming tools that enable vacuum deformation of flat sheet material into deep-drawn bodies can be produced relatively easily and inexpensively, for example from wood, and be designed so that the side wall and The edge or collar of the deep-drawn body that can be assembled into the spiral housing is given an optimally streamlined shape.
  • the end edges of the rim or collar on the second deep-drawn body can be reworked, for example with the help of a freely programmable five-axis milling machine, so that the outwardly projecting lugs are obtained on them.
  • the recesses can be made in the same manner in the edge or collar of the first deep-drawn body near the side wall with the aid of a finger cutter.
  • the sheet material used to manufacture the vacuum deep-drawn body can be, for example, polyvinyl chloride (PVC), standard polystyrene (PS) or impact-resistant polystyrene (SB), the inherent elasticity of which ensures that the lugs on the edge or collar of the second deep-drawn body provide an automatic and secure snap connection enter with the recesses in the rim or collar of the first thermoformed body when the two thermoformed bodies are plugged together axially parallel to their marginal rims or collar.
  • PVC polyvinyl chloride
  • PS standard polystyrene
  • SB impact-resistant polystyrene
  • a flat, circular bowl is formed from the side wall of the first deep-drawing body, the center of which has a cover position with the center of the volute casing, that the bowl bottom has an inwardly arched shape, and that bayonet-like openings are provided in the peripheral wall of the cup, in which the stator of a blower motor via radial arms against the spring force of the arched Cup base - can be locked by a simple, limited angular rotation relative to the deep-drawn body.
  • the bayonet-like openings in the peripheral wall of the cup can also be produced in a simple manner, for example with the aid of a freely programmable five-axis milling machine.
  • corresponding passage openings for the radial arms on the stator of the blower motor in the side wall of the first deep-drawn molded part can also be provided with the bayonet-like openings in the peripheral wall of the cup.
  • a hump or knobs can be formed from the side wall of the first deep-drawn body in such a way that it lies in the rotating circle area of the radial arms of the blower motor stator and thereby comes into operative connection with one of the radial arms in its engagement position as a rotational position lock.
  • a radial fan 1 is shown in cross section, in which a fan wheel 3 is accommodated in a so-called spiral housing 2, which sits on the rotor 4 of an electric motor 5, which in turn is fastened in the spiral housing 2.
  • the entire radial fan 1 with spiral housing 2, impeller 3, rotor 4 and electric motor 5 has a relative small and flat design, as clearly shown in Fig. 1 of the drawing.
  • the spiral housing 2 of the radial fan 1 is composed of two housing parts 6 and 7, which are connected to one another along a plane 9-9 lying normal to the fan axis 8-8.
  • Both housing parts 6 and 7 of the spiral housing 2 are produced as vacuum deep-drawn bodies made of a plastic plate material, for example made of polyvinyl chloride (PVC) from standard polystyrene (PS) or impact-resistant polystyrene (SB), by first plasticizing the flat plate material by the action of heat and then by Creation of a vacuum against the contours of a wooden mold or the like is created.
  • a plastic plate material for example made of polyvinyl chloride (PVC) from standard polystyrene (PS) or impact-resistant polystyrene (SB)
  • the housing part 6 is formed by a first vacuum deep-drawing body, which has a closed side wall 10 and an angled edge rim or collar 11 which adjoins the contour thereof.
  • a flat, circular bowl 12 is formed, the center of which coincides with the center of the spiral housing 2 and consequently also has a covering position with the fan axis 8-8.
  • the bowl bottom 13 has an inwardly arched shape and in the peripheral wall 14 of the bowl 12 several bayonet-like openings 15, 16, 17 are provided evenly distributed in the circumferential direction, which are only partially shown in FIGS. 4, 5 and 6.
  • each of these bayonet-like openings 15, 16, 17 in the peripheral wall 14 of the bowl 12 corresponds to a passage opening 19, 20, 21, which are provided in the side wall 10 of the housing part 6 in a manner which from Fig. 3 of the drawing can be seen.
  • the stator 21 hits the inwardly curved cup base 13 and deforms it elastically outwards.
  • Slit-like recesses 26 are provided near the side wall 10 in the rim or collar 11 of the housing part 6, namely in a larger number, distributed as uniformly as possible along the circumferential contour. 3 that the housing part 6 is provided with five recesses 26. These recesses 26 can either, as shown in FIG. 2, run straight and parallel to the side wall 10. However, as indicated in FIG. 8, they can also be provided with an arcuate course.
  • the housing part 7 of the spiral housing 7 is also produced as a vacuum deep-drawing body made of plate material, in the same way as the housing part 6. It has an essentially flat side wall 27, into which an intake neck 28 is formed as an opening in alignment with the blower axis 8-8.
  • the peripheral contour of the second vacuum deep-drawing body forming the housing part 7 is matched to the peripheral contour of the housing part 6.
  • the housing part 7 also has a rim or collar 29 directed at right angles to its side wall 27. However, this has a height which approximately corresponds to the inside width 30 of the spiral housing 2, as can be clearly seen from FIG. 1.
  • slot-like recesses 26 according to FIG. 2 have to be made relatively narrow if they are to interact with the lugs 32 as a low-play snap-locking device, it is possible in the arcuate configuration according to FIG. 8 to give the recesses 26 a larger opening width. Nevertheless, they cooperate with the lugs 32 as a low-play snap-in device, because the latter have a three-point system on the arc contour.
  • the spiral housing 2 of the radial blowers 1 described above can still be manufactured inexpensively with relatively small quantities and at the same time have the advantage of a relatively high internal damping because they are formed from plastic sheet material by vacuum deformation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP93111713A 1992-10-23 1993-07-22 Boîtier helicoidal pour soufflante radial Expired - Lifetime EP0593860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9214308U 1992-10-23
DE9214308U DE9214308U1 (de) 1992-10-23 1992-10-23 Spiralgehäuse für Radialgebläse

Publications (2)

Publication Number Publication Date
EP0593860A1 true EP0593860A1 (fr) 1994-04-27
EP0593860B1 EP0593860B1 (fr) 1996-02-07

Family

ID=6885130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111713A Expired - Lifetime EP0593860B1 (fr) 1992-10-23 1993-07-22 Boîtier helicoidal pour soufflante radial

Country Status (3)

Country Link
EP (1) EP0593860B1 (fr)
AT (1) ATE134026T1 (fr)
DE (2) DE9214308U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003038285A1 (fr) * 2001-11-02 2003-05-08 Valeo Climatisation Groupe moto-ventilateur
FR2831931A1 (fr) * 2001-11-02 2003-05-09 Valeo Climatisation Groupe moto-ventilateur a support moteur desaxe
CN109083853A (zh) * 2018-10-24 2018-12-25 奥克斯空调股份有限公司 一种风机结构以及空调器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321924C1 (de) * 1993-07-01 1994-06-23 Siegenia Frank Kg Verfahren zum Herstellen eines Radiallüfters und hiernach hergestellter Radiallüfter
DE102005059636A1 (de) * 2005-12-14 2007-06-21 Pfeiffer Vacuum Gmbh Vakuumpumpe
DE102019129588A1 (de) * 2019-11-04 2021-05-06 Miele & Cie. Kg Gebläse, umfassend ein Gehäuse und einen Motor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456488A (en) * 1945-03-15 1948-12-14 Torrington Mfg Co Centrifugal blower housing
US2931562A (en) * 1958-01-20 1960-04-05 Brown & Bigelow Desk air fan
DE1428225A1 (de) * 1963-06-20 1969-07-10 Rotron Mfg Company Inc Zentrifugalgeblaese
GB2002182A (en) * 1977-07-30 1979-02-14 Matsushita Electric Works Ltd Device for fitting electric motors and for feeding power to the same
FR2417661A1 (fr) * 1978-02-21 1979-09-14 Bosch Gmbh Robert Ventilateur radial, notamment pour des installations de chauffage et de ventilation dans des vehicules automobiles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300623B (de) * 1959-10-06 1969-08-07 Danieels Warmte En Kunststofte Aus Kunststoff bestehendes Gehaeuse eines Zentrifugalventilators
DE6605373U (de) * 1960-08-19 1970-05-14 Kiefer A Gehaeuse von zentrifugal-ventilatoren aus kunststoff
DE1282836B (de) * 1960-08-19 1968-11-14 Alice Kiefer Geb Strelow Verfahren zum Herstellen von Gehaeusen von Zentrifugal-Ventilatoren aus Kunststoff
DE1816446A1 (de) * 1968-12-21 1970-07-23 Siemens Ag Verfahren zum Herstellen von Spiralgehaeusen fuer Radialgeblaese

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456488A (en) * 1945-03-15 1948-12-14 Torrington Mfg Co Centrifugal blower housing
US2931562A (en) * 1958-01-20 1960-04-05 Brown & Bigelow Desk air fan
DE1428225A1 (de) * 1963-06-20 1969-07-10 Rotron Mfg Company Inc Zentrifugalgeblaese
GB2002182A (en) * 1977-07-30 1979-02-14 Matsushita Electric Works Ltd Device for fitting electric motors and for feeding power to the same
FR2417661A1 (fr) * 1978-02-21 1979-09-14 Bosch Gmbh Robert Ventilateur radial, notamment pour des installations de chauffage et de ventilation dans des vehicules automobiles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003038285A1 (fr) * 2001-11-02 2003-05-08 Valeo Climatisation Groupe moto-ventilateur
FR2831931A1 (fr) * 2001-11-02 2003-05-09 Valeo Climatisation Groupe moto-ventilateur a support moteur desaxe
CN109083853A (zh) * 2018-10-24 2018-12-25 奥克斯空调股份有限公司 一种风机结构以及空调器

Also Published As

Publication number Publication date
DE59301590D1 (de) 1996-03-21
EP0593860B1 (fr) 1996-02-07
ATE134026T1 (de) 1996-02-15
DE9214308U1 (de) 1993-01-07

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