FR2406107A1 - Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material - Google Patents

Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material

Info

Publication number
FR2406107A1
FR2406107A1 FR7731844A FR7731844A FR2406107A1 FR 2406107 A1 FR2406107 A1 FR 2406107A1 FR 7731844 A FR7731844 A FR 7731844A FR 7731844 A FR7731844 A FR 7731844A FR 2406107 A1 FR2406107 A1 FR 2406107A1
Authority
FR
France
Prior art keywords
spiral
moulded
centrifugal fan
cellular material
thermal
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Withdrawn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
FR7731844A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7731844A priority Critical patent/FR2406107A1/en
Publication of FR2406107A1 publication Critical patent/FR2406107A1/en
Withdrawn legal-status Critical Current

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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • 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
    • F04D29/4253—Fan casings with axial entry and discharge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The spiral of the centrifugal fan is moulded in synthetic cellular material so as to fit accurately inside the box. It has an eccentric recess for the electrical housing and a central recess opening outwards below for connection to a suction conduit. Above it opens into a cavity where the turbine is positioned with its outlet, having a contour corresponding to these. This cavity, together with the cover plate forms the spiral which is usually fitted to the turbine, and the moulding which is of low density polyurethane or polyester foam also acts as the filter element.
FR7731844A 1977-10-11 1977-10-11 Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material Withdrawn FR2406107A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7731844A FR2406107A1 (en) 1977-10-11 1977-10-11 Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7731844A FR2406107A1 (en) 1977-10-11 1977-10-11 Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material

Publications (1)

Publication Number Publication Date
FR2406107A1 true FR2406107A1 (en) 1979-05-11

Family

ID=9196819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7731844A Withdrawn FR2406107A1 (en) 1977-10-11 1977-10-11 Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material

Country Status (1)

Country Link
FR (1) FR2406107A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275896A2 (en) * 1987-01-21 1988-07-27 Gretsch Unitas GmbH Baubeschläge Ventilation apparatus
EP0805277A1 (en) * 1996-05-03 1997-11-05 Idr Holding S.A. A centrifugal ventilator
EP3499046A1 (en) * 2017-12-18 2019-06-19 BSH Hausgeräte GmbH Fan housing, fan for a domestic appliance and method for producing a fan housing
EP3499047A1 (en) * 2017-12-18 2019-06-19 BSH Hausgeräte GmbH Fan case and fan for a domestic appliance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275896A2 (en) * 1987-01-21 1988-07-27 Gretsch Unitas GmbH Baubeschläge Ventilation apparatus
EP0275896A3 (en) * 1987-01-21 1989-09-20 Gretsch Unitas Gmbh Baubeschlage Ventilation apparatus
EP0805277A1 (en) * 1996-05-03 1997-11-05 Idr Holding S.A. A centrifugal ventilator
EP3499046A1 (en) * 2017-12-18 2019-06-19 BSH Hausgeräte GmbH Fan housing, fan for a domestic appliance and method for producing a fan housing
EP3499047A1 (en) * 2017-12-18 2019-06-19 BSH Hausgeräte GmbH Fan case and fan for a domestic appliance

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Legal Events

Date Code Title Description
ST Notification of lapse