EP1236908A2 - Motorlüfter für Abzugshauben - Google Patents

Motorlüfter für Abzugshauben Download PDF

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Publication number
EP1236908A2
EP1236908A2 EP02004487A EP02004487A EP1236908A2 EP 1236908 A2 EP1236908 A2 EP 1236908A2 EP 02004487 A EP02004487 A EP 02004487A EP 02004487 A EP02004487 A EP 02004487A EP 1236908 A2 EP1236908 A2 EP 1236908A2
Authority
EP
European Patent Office
Prior art keywords
conveyor
aforementioned
plate
fact
fan
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Withdrawn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
EP02004487A
Other languages
English (en)
French (fr)
Other versions
EP1236908A3 (de
Inventor
Ignazio Giacalone
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.)
ELIN Srl
Original Assignee
ELIN Srl
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 ELIN Srl filed Critical ELIN Srl
Publication of EP1236908A2 publication Critical patent/EP1236908A2/de
Publication of EP1236908A3 publication Critical patent/EP1236908A3/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Withdrawn legal-status Critical Current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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/162—Double suction pumps

Definitions

  • This invention refers to the construction of kitchen suction hoods and specifically to a particularly silent and efficient motorised air conveyor unit.
  • the aim of this invention is therefore to improve the performance of existing double-flow type conveyors, similar to that described in claim 1. This can be done by using certain technical devices aimed at achieving better flow dynamics, which will minimise the turbulence responsible for the noise and inefficient use of the conveyors.
  • a suction hood air conveyor unit which consists of: a pair of half-augers, in juxtaposition at a joint connection surface; a fan equipped with a transverse plate and a double set of vanes.
  • the vanes are solidly fixed to the plate with their own attachment ends and are positioned in such a way as to define, between them, circular rings which project bilaterally from the plate and coaxially with the rotation axis of the fan; and a spring return motor, mounted on one of the half-augers, which sustains the fan at the plate, inside the conveyor.
  • the above-mentioned conveyor is distinguished by the fact that the radius of the plate is greater than the radius of the circular rings formed by the vanes, therefore ensuring that the two flows travelling through the conveyor do not come into contact with each other.
  • a conveyor made in this way ensures the physical separation of the flows coming concurrently into the fan at the same time and prevents them from interfering with and/or mixing with each other.
  • the vanes have the plate attachment ends shaped with an appropriate edge outline that is capable of progressively deflecting the flows from the air intake, axial to the fan, towards the exit, radial to the fan, it ensures that even the possibility of triggering off turbulence due to the abrupt change in direction, is avoided.
  • the air intake sections of the half-augers that make up the carcass of the conveyor should preferably be provided with grilles, formed so that their component sections are essentially identical from one area of the grille to another, over the entire air entry section.
  • the dynamic capacity devices placed between the half-augers and the fan actuated in particular by the cusp edges protruding from the half-augers, and interacting with the rings connecting the free extremities of the vanes, also prevent the recirculation of air between the turn in the conveyor and the half-auger air intake sections.
  • figure 1 shows a motorised air conveyor, to be used preferably for kitchen suction hoods; the whole is marked with the number 1 and comprises two half-augers marked A and B, and a fan D with vanes, operated by a motor H (visible in figure 6).
  • the two half-augers A and B which are, respectively, a half-auger engine mounting A and a half-auger filter mounting B which are in juxtaposition at the joint connection surface 2 in order to form the whole conveyor carcass 1. This can be seen in figure 1, as well as in figures 2 and 3.
  • the half-auger motor mounting A is shown in detail in figure 4.
  • This motor mounting is provided with suitable attachment points 21 on a flange 22 and is centered on an axis 4 which coincides with the rotational axis of the motor H; figure 5, on the other hand, shows the half-auger filter mounting B.
  • Both the half-augers, A and B are provided with air intake sections 12, made of two circular holes with grilles 13 formed by concentric rings 14 - or more precisely cylindrical blades - which are coaxial with the axis 4 of the motor H and connected by transverse arms 15.
  • the rings 14 have different distances between them and in particular, the distance between the rings 14, set two by two adjacent to each other, becomes greater as, little by little, their distance from the rotational axis 4 of the motor H decreases.
  • the fan D - seen more clearly in figure 6 - comprises a transverse plate C and a double row of vanes D1 which are firmly fixed to the plate C, each via an attachment end 3.
  • the vanes are distributed in such a way as to define, in combination between themselves, circular rings which have a smaller radius than the radius of the plate itself. These circular rings project out sharply from the plate C and at both sides of it.
  • the vanes D1 should preferably be of the "action” type, although this does not mean that the fan D cannot have vanes D1 of the "reaction” type.
  • the fan D and the circular rings, formed by the blades D1 are co-axial to the rotational axis 4 of the motor H.
  • the fan D is sustained by the spring return motor H inside the conveyor 1, and is supported by the motor H by way of the connection of the plate C to the relevant shaft 23.
  • these rings widen to the point that they themselves assume a greater circumference than their own circumference in the points that are furthest from plate C.
  • both figure 6 and figure 7 show that the attachment ends 3 of the vanes D1 to the plate C have edge profiles 9 defined by points 11 that are a distance 7 from the rotation axis 4 of the fan D which is variable and increases continuously with the reduction in the distance 8 from the plate C.
  • this edge profile 9 is variable, with a continuous progression between a minimum, the minimum radius 6 of the fan D, and a maximum, the radius 5 of the plate C.
  • edge profile 9 numerous alternative options are possible, since, according to the case, it is possible to adopt the following edge profiles 9: circle arc and parabolic arc; hyperbolic arc or even polycentric curve arc.
  • Dynamic capacity devices have been placed between the fan D and the half-augers, A and B. These devices are there to stop the formation of turbulence due to the recirculation of air in areas of the conveyor 1 that are subject to different pressures.
  • the devices seen clearly in figure 6, comprise cusp edges 18 projecting from the half-augers, A and B, towards the inside of the conveyor 1 which are facing, and in strict proximity with, the rings 19 that connect the free ends 20 of the vanes D1.
  • edges 18 and the rings 19 prevent the reflux of air between the turn, or exit section 17 of the conveyor 1 and the entry sections 12 of the half-augers A and B.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Harvester Elements (AREA)
  • Ventilation (AREA)
EP02004487A 2001-03-01 2002-02-27 Motorlüfter für Abzugshauben Withdrawn EP1236908A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001AN000008U ITAN20010008U1 (it) 2001-03-01 2001-03-01 Convogliatore aria per elettrodomestici cappe da cucina alimentato damotore elettrico
ITAN20010008U 2001-03-01

Publications (2)

Publication Number Publication Date
EP1236908A2 true EP1236908A2 (de) 2002-09-04
EP1236908A3 EP1236908A3 (de) 2003-08-27

Family

ID=11437284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02004487A Withdrawn EP1236908A3 (de) 2001-03-01 2002-02-27 Motorlüfter für Abzugshauben

Country Status (2)

Country Link
EP (1) EP1236908A3 (de)
IT (1) ITAN20010008U1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1591667A2 (de) * 2004-04-06 2005-11-02 ELECTROMEC S.p.A. Lüftereinheit
DE102007019056A1 (de) 2007-04-23 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Lüfter für Dunstabzugshaube
CN105545803A (zh) * 2014-11-03 2016-05-04 博西华电器（江苏）有限公司 用于吸油烟机的多翼式离心叶轮、风机、吸油烟机及叶片
CN105626580A (zh) * 2014-11-03 2016-06-01 博西华电器（江苏）有限公司 盛装吸油烟机的多翼式离心叶轮的壳体、风机及吸油烟机
ITUA20162311A1 (it) * 2016-04-05 2017-10-05 Elica Spa Piano cottura con cappa integrata.
IT201700001204A1 (it) * 2017-01-05 2018-07-05 Saba Plast Srl Gruppo aspiratore con spazio di preparazione
CN111456967A (zh) * 2019-01-18 2020-07-28 宁波方太厨具有限公司 一种离心风机叶轮

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101297A (ja) * 1981-12-10 1983-06-16 Matsushita Electric Ind Co Ltd 両吸込み形多翼送風機
DE3804113A1 (de) * 1988-02-11 1989-08-24 Bosch Gmbh Robert Radialluefter
DE8909594U1 (de) * 1989-08-10 1989-10-05 Metronic Electronic GmbH, 7210 Rottweil Gebläse mit einem Elektromotor
EP0627560A1 (de) * 1993-06-04 1994-12-07 Alcatel SEL Aktiengesellschaft Radialgebläse
US6110035A (en) * 1996-06-26 2000-08-29 Denso Corporation Blower unit and air conditioner employing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101297A (ja) * 1981-12-10 1983-06-16 Matsushita Electric Ind Co Ltd 両吸込み形多翼送風機
DE3804113A1 (de) * 1988-02-11 1989-08-24 Bosch Gmbh Robert Radialluefter
DE8909594U1 (de) * 1989-08-10 1989-10-05 Metronic Electronic GmbH, 7210 Rottweil Gebläse mit einem Elektromotor
EP0627560A1 (de) * 1993-06-04 1994-12-07 Alcatel SEL Aktiengesellschaft Radialgebläse
US6110035A (en) * 1996-06-26 2000-08-29 Denso Corporation Blower unit and air conditioner employing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 203 (M-241), 8 September 1983 (1983-09-08) & JP 58 101297 A (MATSUSHITA DENKI SANGYO KK), 16 June 1983 (1983-06-16) *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1591667A2 (de) * 2004-04-06 2005-11-02 ELECTROMEC S.p.A. Lüftereinheit
EP1591667A3 (de) * 2004-04-06 2009-05-13 ELECTROMEC S.p.A. Lüftereinheit
DE102007019056A1 (de) 2007-04-23 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Lüfter für Dunstabzugshaube
CN105545803A (zh) * 2014-11-03 2016-05-04 博西华电器（江苏）有限公司 用于吸油烟机的多翼式离心叶轮、风机、吸油烟机及叶片
CN105626580A (zh) * 2014-11-03 2016-06-01 博西华电器（江苏）有限公司 盛装吸油烟机的多翼式离心叶轮的壳体、风机及吸油烟机
CN105626580B (zh) * 2014-11-03 2021-08-03 博西华电器（江苏）有限公司 盛装吸油烟机的多翼式离心叶轮的壳体、风机及吸油烟机
CN105545803B (zh) * 2014-11-03 2020-08-11 博西华电器（江苏）有限公司 用于吸油烟机的多翼式离心叶轮、风机、吸油烟机及叶片
CN108885012A (zh) * 2016-04-05 2018-11-23 爱瑞卡股份公司 具有集成罩的灶具
US20190032925A1 (en) * 2016-04-05 2019-01-31 Elica S.P.A. Cooktops with integrated hoods
EA034148B1 (ru) * 2016-04-05 2020-01-09 Элика С.П.А. Варочная панель со встроенной вытяжкой
CN108885012B (zh) * 2016-04-05 2020-04-07 爱瑞卡股份公司 具有集成罩的灶具
WO2017175085A1 (en) * 2016-04-05 2017-10-12 Elica S.P.A A cooktop with an integrated hood
US10782030B2 (en) 2016-04-05 2020-09-22 Elica S.P.A. Cooktops with integrated hoods
ITUA20162311A1 (it) * 2016-04-05 2017-10-05 Elica Spa Piano cottura con cappa integrata.
IT201700001204A1 (it) * 2017-01-05 2018-07-05 Saba Plast Srl Gruppo aspiratore con spazio di preparazione
CN111456967A (zh) * 2019-01-18 2020-07-28 宁波方太厨具有限公司 一种离心风机叶轮
CN111456967B (zh) * 2019-01-18 2021-05-18 宁波方太厨具有限公司 一种离心风机叶轮

Also Published As

Publication number Publication date
ITAN20010008V0 (it) 2001-03-01
ITAN20010008U1 (it) 2002-09-01
EP1236908A3 (de) 2003-08-27

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