FR2314555A1 - Noise suppressor for expanding gas - has ejector with primary inlet for gas and secondary inlet for air - Google Patents

Noise suppressor for expanding gas - has ejector with primary inlet for gas and secondary inlet for air

Info

Publication number
FR2314555A1
FR2314555A1 FR7537084A FR7537084A FR2314555A1 FR 2314555 A1 FR2314555 A1 FR 2314555A1 FR 7537084 A FR7537084 A FR 7537084A FR 7537084 A FR7537084 A FR 7537084A FR 2314555 A1 FR2314555 A1 FR 2314555A1
Authority
FR
France
Prior art keywords
gas
ejector
inlet
noise suppressor
air
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
FR7537084A
Other languages
French (fr)
Other versions
FR2314555B1 (en
Inventor
Constantin Teodorescu
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.)
INST PENTRU CREATIE STINTIFIC
Original Assignee
INST PENTRU CREATIE STINTIFIC
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 INST PENTRU CREATIE STINTIFIC filed Critical INST PENTRU CREATIE STINTIFIC
Publication of FR2314555A1 publication Critical patent/FR2314555A1/en
Application granted granted Critical
Publication of FR2314555B1 publication Critical patent/FR2314555B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/14—Silencing apparatus characterised by method of silencing by adding air to exhaust gases

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipe Accessories (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

Noise suppressor for expanding gases has a tubular housing (1) having a central inlet (5) for the gas surrounded by two concentric annular inlets (a, b) for ambient air. The central inlet leads to an ejector (4) situated inside the housing and having an annular duct for the gas surrounding a hollow divergent centre body having inlets (c) for the ambient air and extending downstream to a divergent outlet. The gas exhausts from the duct at an annular outlet upstream of the divergent outlet. The ejector provides for stepless expansion of the gas and lowers the sound frequency of the gas.
FR7537084A 1975-06-12 1975-12-04 Noise suppressor for expanding gas - has ejector with primary inlet for gas and secondary inlet for air Granted FR2314555A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO3251475 1975-06-12

Publications (2)

Publication Number Publication Date
FR2314555A1 true FR2314555A1 (en) 1977-01-07
FR2314555B1 FR2314555B1 (en) 1978-08-18

Family

ID=20086319

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537084A Granted FR2314555A1 (en) 1975-06-12 1975-12-04 Noise suppressor for expanding gas - has ejector with primary inlet for gas and secondary inlet for air

Country Status (1)

Country Link
FR (1) FR2314555A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR796853A (en) * 1935-01-16 1936-04-16 Silent improvements
FR2165381A5 (en) * 1971-12-13 1973-08-03 Inst Pentru Creatie Stintific

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR796853A (en) * 1935-01-16 1936-04-16 Silent improvements
FR2165381A5 (en) * 1971-12-13 1973-08-03 Inst Pentru Creatie Stintific

Also Published As

Publication number Publication date
FR2314555B1 (en) 1978-08-18

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Legal Events

Date Code Title Description
ST Notification of lapse