WO2003074882A1 - Electrical aspirating assembly - Google Patents

Electrical aspirating assembly Download PDF

Info

Publication number
WO2003074882A1
WO2003074882A1 PCT/IT2002/000136 IT0200136W WO03074882A1 WO 2003074882 A1 WO2003074882 A1 WO 2003074882A1 IT 0200136 W IT0200136 W IT 0200136W WO 03074882 A1 WO03074882 A1 WO 03074882A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical
assembly
cover
aspirating
scroll
Prior art date
Application number
PCT/IT2002/000136
Other languages
French (fr)
Inventor
Luca Bartoli
Gabriele Sampaolesi
Original Assignee
Ln 2 - S.R.L.
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 Ln 2 - S.R.L. filed Critical Ln 2 - S.R.L.
Priority to ES02717040T priority Critical patent/ES2269663T3/en
Priority to PCT/IT2002/000136 priority patent/WO2003074882A1/en
Priority to DE60213285T priority patent/DE60213285T2/en
Priority to EP02717040A priority patent/EP1483508B1/en
Priority to AU2002247960A priority patent/AU2002247960A1/en
Priority to AT02717040T priority patent/ATE333592T1/en
Publication of WO2003074882A1 publication Critical patent/WO2003074882A1/en
Priority to NO20034812A priority patent/NO20034812D0/en

Links

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
    • F04D29/424—Double entry 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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/105—Centrifugal pumps for compressing or evacuating with double suction
    • 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
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps

Definitions

  • This patent application for industrial invention relates to an electrical aspirating assembly provided with anchor cover that also acts to convey the air towards the aspiration inlets.
  • the electrical aspirating assembly of the invention is similar to the ones normally installed in modular kitchen hoods, typically located over the stove, in order to energetically aspirate fumes and odours originated while cooking.
  • electrical aspirating assemblies characterised by high head and capacity, comprising one or more fan wheel side by side, housed in a scroll-shaped casing that also houses the electrical motor, on whose shaft the fan wheels are mounted.
  • the casing has an opposite pair of circular openings representing the two aspiration inlets for the air.
  • the air Upon exiting the fan wheel the air is conveyed into a diverging diffuser duct that ends with the ejection or delivery opening coupled to the duct that ejects the air.
  • These electrical aspirating assemblies are mounted inside kitchen hoods so that the shaft revolves around a vertical axis. In this way the two aspiration inlets are located on two vertical parallel planes, while the ejection opening is located on an horizontal plane, facing upwards, so that the air that exits the assembly can be directly conveyed into the ejection duct, located above the hood and having a vertical direction.
  • the assembly is anchored inside the hood on the delivery opening that is especially provided with external flange, used to anchor the assembly with screws to shelves or brackets that form an integral part of a bearing frame, on which all hood components are fixed, such as for example shell, chimney, filters, lamps with diffuser screens.
  • This anchoring method has been standardised for many years, although it imposes dimensional restrictions in the styling of the hood shell, since the height and depth of the hood must be such as to allow for housing the assembly.
  • the purpose of the invention is to design a new electrical aspirating group of the type illustrated above, characterised by the fact that it can be placed and fixed on a bearing plate, although the assembly has a conventional layout, with the delivery opening facing upwards and the shaft of the electrical motor located horizontally.
  • the electrical aspirating assembly of the invention which comprises a bell-shaped cover with a substantially rectangular base edge.
  • the cover only houses the lower part of the scroll- shaped casing of the electrical aspirating assembly, including the two lateral aspiration inlets that are enclosed in an opposite pair of caps, each of them coupled and directly communicating with the lower opening of the cover.
  • the assembly is anchored to the bearing structure on the lower opening that is positioned and fixed on a support plane.
  • the anchor cover indirectly conveys the air towards the aspiration inlets of the assembly that are located in the centre of the scroll-shaped casing and inside the two lateral caps that characterise the shape of the cover.
  • the air is aspirated and passes through the lower opening of the cover, touching the lower wall of the scroll-shaped casing. For this reason the air current is divided into two diverting ascending flows that are conveyed by the _
  • the assembly according to the invention can therefore be housed above the hood shell, hidden inside the flue, using the same bearing shelf for all components of the hood.
  • the bearing shelf is firmly fixed to the wall, it will be possible to hang the shell of the hood under the shelf and anchor the cover and the flue above the shelf.
  • Fig. 1 is an exploded anoxometric view of the electrical aspirating assembly of the invention located between the shell of a hood and the flue;
  • FIG. 2 is an axonometric view of the electrical aspirating assembly of the invention laid on one side in order to show the compartment formed by the anchor cover;
  • FIG. 3 is a top view of the electrical aspirating assembly of the invention anchored above the shell of a hood and enclosed in the hood flue;
  • - Fig. 4 is a cross-section of the electrical aspirating assembly of the invention with the vertical plane IV-IV of Fig. 3.
  • the electrical aspirating assembly (1) of the invention comprises a pair of fan wheels (2) side by side, located in a scroll-shaped casing (3) that also houses the electrical motor (4), on whose shaft the fan wheels are mounted.
  • the casing (3) has an opposite pair of circular openings (3a) representing the two aspiration inlets of the air.
  • the air Upon exiting the fan wheels (2) the air is conveyed into a diverging diffuser duct that ends with the ejection or delivery opening (3b).
  • the assembly (1) is characterised by the fact that it comprises a bell- shaped cover (5) with a substantially rectangular base edge (5a).
  • the cover M is characterised by the fact that it comprises a bell- shaped cover (5) with a substantially rectangular base edge (5a).
  • the assembly (1) is anchored to the bearing structure of the hood on the lower opening (5c) that is positioned and fixed on a support plane.
  • the edge (5a) of the opening (5c) is provided with an external flange (5d) used to anchor the assembly with screws to any support plane (P) that can be represented by the shell (6) of the hood, as illustrated in the embodiment shown in Fig. 1, which shows a shell (6) acting as bearing structure for all the elements of the hood, including the flue (7) that houses the assembly (1).
  • the aspirated air current passes through the lower opening (5c) of the cover (5) and touches the lower wall of the scroll-shaped casing (5), in such a way that it is divided into two diverging ascending flows that are conveyed by the caps

Abstract

This invention relates to an electrical aspirating assembly of the type comprising one or more fan wheels (2) housed in a scroll-shaped casing (3) that also houses the electrical motor (4) used to operate the fan wheels (2) located between an opposite pair of aspiration inlets(3a), characterised by the fact that is provided of an anchor cover (5) to any type of bearing plane (P), which is shaped like a bell and houses only the lower part of the scroll-shaped casing, including the two aspiration inlets (3a).

Description

ELECTRICAL ASPIRATING ASSEMBLY
Description
This patent application for industrial invention relates to an electrical aspirating assembly provided with anchor cover that also acts to convey the air towards the aspiration inlets.
The electrical aspirating assembly of the invention is similar to the ones normally installed in modular kitchen hoods, typically located over the stove, in order to energetically aspirate fumes and odours originated while cooking.
More precisely, reference is made to electrical aspirating assemblies characterised by high head and capacity, comprising one or more fan wheel side by side, housed in a scroll-shaped casing that also houses the electrical motor, on whose shaft the fan wheels are mounted.
The casing has an opposite pair of circular openings representing the two aspiration inlets for the air. Upon exiting the fan wheel the air is conveyed into a diverging diffuser duct that ends with the ejection or delivery opening coupled to the duct that ejects the air. These electrical aspirating assemblies are mounted inside kitchen hoods so that the shaft revolves around a vertical axis. In this way the two aspiration inlets are located on two vertical parallel planes, while the ejection opening is located on an horizontal plane, facing upwards, so that the air that exits the assembly can be directly conveyed into the ejection duct, located above the hood and having a vertical direction.
The assembly is anchored inside the hood on the delivery opening that is especially provided with external flange, used to anchor the assembly with screws to shelves or brackets that form an integral part of a bearing frame, on which all hood components are fixed, such as for example shell, chimney, filters, lamps with diffuser screens.
This anchoring method has been standardised for many years, although it imposes dimensional restrictions in the styling of the hood shell, since the height and depth of the hood must be such as to allow for housing the assembly.
Some models of hood have been recently proposed to overcome this dimensional restriction, in which the electrical aspirating assembly is contained in the flue above the hood shell.
Also in these models of hood, however, there is the need to provide the bearing frame inside the flue used to anchor the electrical aspirating assembly. In conclusion, it can be said that the installation of electrical aspirating assemblies in hoods has been realised so far by hanging them under an horizontal bearing plate on which the assembly delivery opening is fixed.
The purpose of the invention is to design a new electrical aspirating group of the type illustrated above, characterised by the fact that it can be placed and fixed on a bearing plate, although the assembly has a conventional layout, with the delivery opening facing upwards and the shaft of the electrical motor located horizontally.
This purpose has been achieved by the electrical aspirating assembly of the invention, which comprises a bell-shaped cover with a substantially rectangular base edge. The cover only houses the lower part of the scroll- shaped casing of the electrical aspirating assembly, including the two lateral aspiration inlets that are enclosed in an opposite pair of caps, each of them coupled and directly communicating with the lower opening of the cover.
The assembly is anchored to the bearing structure on the lower opening that is positioned and fixed on a support plane.
The anchor cover indirectly conveys the air towards the aspiration inlets of the assembly that are located in the centre of the scroll-shaped casing and inside the two lateral caps that characterise the shape of the cover. The air is aspirated and passes through the lower opening of the cover, touching the lower wall of the scroll-shaped casing. For this reason the air current is divided into two diverting ascending flows that are conveyed by the _
caps towards the two aspiration inlets.
The assembly according to the invention can therefore be housed above the hood shell, hidden inside the flue, using the same bearing shelf for all components of the hood. In other words, if the bearing shelf is firmly fixed to the wall, it will be possible to hang the shell of the hood under the shelf and anchor the cover and the flue above the shelf.
If the structure of the shell is such that the same can be used as bearing element for the other components, it will be possible to fix the cover above the shell. For major clarity the description of the electrical aspirating assembly according to the invention continues with reference to the enclosed drawings, which are intended for purposes of illustration and not in a limiting sense, whereby:
- Fig. 1 is an exploded anoxometric view of the electrical aspirating assembly of the invention located between the shell of a hood and the flue;
- Fig. 2 is an axonometric view of the electrical aspirating assembly of the invention laid on one side in order to show the compartment formed by the anchor cover;
- Fig. 3 is a top view of the electrical aspirating assembly of the invention anchored above the shell of a hood and enclosed in the hood flue;
- Fig. 4 is a cross-section of the electrical aspirating assembly of the invention with the vertical plane IV-IV of Fig. 3.
With reference to the aforementioned figures, the electrical aspirating assembly (1) of the invention comprises a pair of fan wheels (2) side by side, located in a scroll-shaped casing (3) that also houses the electrical motor (4), on whose shaft the fan wheels are mounted.
The casing (3) has an opposite pair of circular openings (3a) representing the two aspiration inlets of the air. Upon exiting the fan wheels (2) the air is conveyed into a diverging diffuser duct that ends with the ejection or delivery opening (3b).
The assembly (1) is characterised by the fact that it comprises a bell- shaped cover (5) with a substantially rectangular base edge (5a). The cover M
(5) only houses the lower part of the scroll-shaped casing (3), including the two lateral aspiration inlets (3a), which are enclosed in an opposite pair of caps (5b) that are an integral part of the cover (5); each of the cap (5b) is coupled and directly communicates with the lower opening (5c) of the cover (5).
The assembly (1) is anchored to the bearing structure of the hood on the lower opening (5c) that is positioned and fixed on a support plane.
The edge (5a) of the opening (5c) is provided with an external flange (5d) used to anchor the assembly with screws to any support plane (P) that can be represented by the shell (6) of the hood, as illustrated in the embodiment shown in Fig. 1, which shows a shell (6) acting as bearing structure for all the elements of the hood, including the flue (7) that houses the assembly (1).
As shown in Fig. 4, when the assembly (1) is in operation, the aspirated air current passes through the lower opening (5c) of the cover (5) and touches the lower wall of the scroll-shaped casing (5), in such a way that it is divided into two diverging ascending flows that are conveyed by the caps
(5b) towards the two aspiration inlets (3a).

Claims

Claims
1 ) An electrical aspirating assembly provided with anchor cover, of the type comprising a parallel pair of fan wheels (2) housed in a scroll-shaped casing (3) that also houses the electrical motor (4), on whose shaft the fan wheels (2) are mounted, operating between an opposite pair of circular openings (3a), representing the two aspiration inlets of the air that is ejected at the end of a diverging diffuser duct through a delivery opening (3b); characterised by the fact that it is provided with a bell-shaped cover (5) that houses only the lower part of the scroll-shaped casing (3), including the two lateral aspiration inlets (3a), which are enclosed in an opposite pair of caps (5b) that are an integral part of the cover (5) coupled and directly communicating with the lower opening (5c) of the cover (5), limited by an edge (5a) with means used to fix the assembly (1) to a bearing plane (P).
2) An electrical aspirating assembly according to the previous claim, characterised by the fact that the edge (5a) of the opening (5c) is provided with an external flange (5d) used to anchor the assembly (1) with screws to any support plane (P).
3) An electrical aspirating assembly according to any of the previous claims, characterised by the fact that the edge (5a) has a rectangular profile.
PCT/IT2002/000136 2002-03-05 2002-03-05 Electrical aspirating assembly WO2003074882A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES02717040T ES2269663T3 (en) 2002-03-05 2002-03-05 ELECTRICAL SUCTION APPLIANCE.
PCT/IT2002/000136 WO2003074882A1 (en) 2002-03-05 2002-03-05 Electrical aspirating assembly
DE60213285T DE60213285T2 (en) 2002-03-05 2002-03-05 ELECTRICAL EXTRACTION ARRANGEMENT
EP02717040A EP1483508B1 (en) 2002-03-05 2002-03-05 Electrical aspirating assembly
AU2002247960A AU2002247960A1 (en) 2002-03-05 2002-03-05 Electrical aspirating assembly
AT02717040T ATE333592T1 (en) 2002-03-05 2002-03-05 ELECTRICAL EXTRACTION ARRANGEMENT
NO20034812A NO20034812D0 (en) 2002-03-05 2003-10-28 Electric suction unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2002/000136 WO2003074882A1 (en) 2002-03-05 2002-03-05 Electrical aspirating assembly

Publications (1)

Publication Number Publication Date
WO2003074882A1 true WO2003074882A1 (en) 2003-09-12

Family

ID=27773188

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000136 WO2003074882A1 (en) 2002-03-05 2002-03-05 Electrical aspirating assembly

Country Status (7)

Country Link
EP (1) EP1483508B1 (en)
AT (1) ATE333592T1 (en)
AU (1) AU2002247960A1 (en)
DE (1) DE60213285T2 (en)
ES (1) ES2269663T3 (en)
NO (1) NO20034812D0 (en)
WO (1) WO2003074882A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20100047U1 (en) * 2010-06-24 2011-12-25 Ln 2 Srl Socio Unico PERFECTED CENTRIFUGAL FAN, PARTICULARLY FOR EXTRACTOR HOODS

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058724B (en) * 1956-07-11 1959-06-04 Rox Lufttechnische Geraetebau Elastically mounted centrifugal fan for ventilation cabinets and box units
US3182899A (en) * 1960-06-01 1965-05-11 Whirlpool Co Wall mounted dual fan structure
US5111738A (en) * 1990-07-11 1992-05-12 Valeo Thermique Habitacle Air blower unit for a motor vehicle heating and ventilating system
EP0846870A2 (en) * 1996-12-06 1998-06-10 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Fan casing for a unit used in hoods and ovens
US6132182A (en) * 1996-12-13 2000-10-17 General Electric Company Integrated motor and blower apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058724B (en) * 1956-07-11 1959-06-04 Rox Lufttechnische Geraetebau Elastically mounted centrifugal fan for ventilation cabinets and box units
US3182899A (en) * 1960-06-01 1965-05-11 Whirlpool Co Wall mounted dual fan structure
US5111738A (en) * 1990-07-11 1992-05-12 Valeo Thermique Habitacle Air blower unit for a motor vehicle heating and ventilating system
EP0846870A2 (en) * 1996-12-06 1998-06-10 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Fan casing for a unit used in hoods and ovens
US6132182A (en) * 1996-12-13 2000-10-17 General Electric Company Integrated motor and blower apparatus

Also Published As

Publication number Publication date
ES2269663T3 (en) 2007-04-01
EP1483508A1 (en) 2004-12-08
EP1483508B1 (en) 2006-07-19
DE60213285D1 (en) 2006-08-31
DE60213285T2 (en) 2007-05-10
AU2002247960A1 (en) 2003-09-16
ATE333592T1 (en) 2006-08-15
NO20034812D0 (en) 2003-10-28

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