FR2256712A6 - Silencing system for aspiration system - has two silencers one at inlet and one enveloping the air outlet duct - Google Patents

Silencing system for aspiration system - has two silencers one at inlet and one enveloping the air outlet duct

Info

Publication number
FR2256712A6
FR2256712A6 FR7346540A FR7346540A FR2256712A6 FR 2256712 A6 FR2256712 A6 FR 2256712A6 FR 7346540 A FR7346540 A FR 7346540A FR 7346540 A FR7346540 A FR 7346540A FR 2256712 A6 FR2256712 A6 FR 2256712A6
Authority
FR
France
Prior art keywords
silencers
inlet
enveloping
air outlet
outlet duct
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.)
Expired
Application number
FR7346540A
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.)
MOUZON STE NLE VENTILATEURS G
Original Assignee
MOUZON STE NLE VENTILATEURS G
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 MOUZON STE NLE VENTILATEURS G filed Critical MOUZON STE NLE VENTILATEURS G
Priority to FR7346540A priority Critical patent/FR2256712A6/en
Application granted granted Critical
Publication of FR2256712A6 publication Critical patent/FR2256712A6/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipe Accessories (AREA)

Abstract

The aspirator used in a pneumatic system for the circulation of goods includes two silencers. The first silencer unit (13) is situated around the inlet ventilator (14) and comprises an assembly of sound absorbing material. Incoming air is then propelled by a ventilation fan into a horizontal duct and thereafter through an L-bend into a vertical standpipe (3). The second silencer consists of a coaxial pipe (12) concentric with the standpipe, and is followed by a U-bend section, so that the air is discharged in a downward vertical direction.
FR7346540A 1973-12-27 1973-12-27 Silencing system for aspiration system - has two silencers one at inlet and one enveloping the air outlet duct Expired FR2256712A6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7346540A FR2256712A6 (en) 1973-12-27 1973-12-27 Silencing system for aspiration system - has two silencers one at inlet and one enveloping the air outlet duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7346540A FR2256712A6 (en) 1973-12-27 1973-12-27 Silencing system for aspiration system - has two silencers one at inlet and one enveloping the air outlet duct

Publications (1)

Publication Number Publication Date
FR2256712A6 true FR2256712A6 (en) 1975-07-25

Family

ID=9129767

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7346540A Expired FR2256712A6 (en) 1973-12-27 1973-12-27 Silencing system for aspiration system - has two silencers one at inlet and one enveloping the air outlet duct

Country Status (1)

Country Link
FR (1) FR2256712A6 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104291123A (en) * 2014-09-18 2015-01-21 常州常衡德宇粉体集成系统有限公司 Exhausting and sound reducing device of positive-pressure conveying system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104291123A (en) * 2014-09-18 2015-01-21 常州常衡德宇粉体集成系统有限公司 Exhausting and sound reducing device of positive-pressure conveying system

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