FR2257850A1 - Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct - Google Patents

Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct

Info

Publication number
FR2257850A1
FR2257850A1 FR7400926A FR7400926A FR2257850A1 FR 2257850 A1 FR2257850 A1 FR 2257850A1 FR 7400926 A FR7400926 A FR 7400926A FR 7400926 A FR7400926 A FR 7400926A FR 2257850 A1 FR2257850 A1 FR 2257850A1
Authority
FR
France
Prior art keywords
medium
sound
perforated inner
insulating medium
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.)
Granted
Application number
FR7400926A
Other languages
French (fr)
Other versions
FR2257850B3 (en
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.)
STRULIK WILHELM FR
Original Assignee
STRULIK WILHELM FR
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 STRULIK WILHELM FR filed Critical STRULIK WILHELM FR
Priority to FR7400926A priority Critical patent/FR2257850A1/en
Publication of FR2257850A1 publication Critical patent/FR2257850A1/en
Application granted granted Critical
Publication of FR2257850B3 publication Critical patent/FR2257850B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/147—Arrangements for the insulation of pipes or pipe systems the insulation being located inwardly of the outer surface of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like

Abstract

A typical duct consits of an outer sleeve (1). A thermal and sound insulating medium (2) and a perforated inner sleeve (3). The combination of damping medium and the perforations dissipates the sound energy. Glass wool or known granular materials can be used for the medium and if necessary a barrier screen (4), of for example a woven textile, can be incorporated to prevent dispersion by the fluid. End fittings (6) are designed to retain the medium and form male and female (9) couplings for pipe sections. Electrical connections (5) prevent build up of static charges, whilst the pointed ends prevent thermal hot spots forming on the outer sleeve. T and other junctions can be designed and various methods of production are described.
FR7400926A 1974-01-11 1974-01-11 Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct Granted FR2257850A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7400926A FR2257850A1 (en) 1974-01-11 1974-01-11 Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7400926A FR2257850A1 (en) 1974-01-11 1974-01-11 Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct

Publications (2)

Publication Number Publication Date
FR2257850A1 true FR2257850A1 (en) 1975-08-08
FR2257850B3 FR2257850B3 (en) 1976-11-05

Family

ID=9133371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7400926A Granted FR2257850A1 (en) 1974-01-11 1974-01-11 Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct

Country Status (1)

Country Link
FR (1) FR2257850A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399433A1 (en) * 1989-05-23 1990-11-28 Matsushita Electric Industrial Co., Ltd. A suction pipe for a vacuum cleaner
FR2708709A1 (en) * 1993-08-02 1995-02-10 Giudicelli Pascal Silencer device for a gas flow.
EP0822322A1 (en) * 1996-02-21 1998-02-04 Ibiden Co, Ltd. Muffler for an internal combustion engine
EP0718539A3 (en) * 1994-12-21 1999-03-17 Richard Norres Gas conveying element with soft walls to insulate from and attenuate noises propagating in main channels
GB2483699A (en) * 2010-09-17 2012-03-21 Dave Wills Pipe internal insulation

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399433A1 (en) * 1989-05-23 1990-11-28 Matsushita Electric Industrial Co., Ltd. A suction pipe for a vacuum cleaner
US5042108A (en) * 1989-05-23 1991-08-27 Matsushita Electric Industrial Co., Ltd. Suction pipe for a vacuum cleaner
FR2708709A1 (en) * 1993-08-02 1995-02-10 Giudicelli Pascal Silencer device for a gas flow.
EP0638755A1 (en) * 1993-08-02 1995-02-15 Pascal Giudicelli Muffler device for a gas stream
EP0718539A3 (en) * 1994-12-21 1999-03-17 Richard Norres Gas conveying element with soft walls to insulate from and attenuate noises propagating in main channels
EP0822322A1 (en) * 1996-02-21 1998-02-04 Ibiden Co, Ltd. Muffler for an internal combustion engine
EP0822322A4 (en) * 1996-02-21 2006-08-02 Ibiden Co Ltd Muffler for an internal combustion engine
EP1803907A2 (en) * 1996-02-21 2007-07-04 Ibiden Co., Ltd. Muffler for internal combustion engine
EP1803907A3 (en) * 1996-02-21 2007-07-18 Ibiden Co., Ltd. Muffler for internal combustion engine
GB2483699A (en) * 2010-09-17 2012-03-21 Dave Wills Pipe internal insulation
GB2483699B (en) * 2010-09-17 2013-11-06 Dave Wills Pipe insulation

Also Published As

Publication number Publication date
FR2257850B3 (en) 1976-11-05

Similar Documents

Publication Publication Date Title
US4512721B1 (en) Vacuum insulated steam injection tubing
BG96852A (en) Flexible gas pipeline element with heat insulation
FR2257850A1 (en) Sound and thermally insulated duct system - has thermal insulating medium combined with perforated inner duct
NO813168L (en) Prefabricated, double-walled metal chimney.
ES425956A1 (en) Pipe systems for hot media
ES401787A1 (en) Device for providing a tight seal between two fluids at different temperatures
FR2283383A1 (en) Expansion joint for cryogenic fluid pipes - has bellows and sleeve forming chamber for gas preventing compensation
GB1244948A (en) Means forming a vaccum-tight seal
JPS56113894A (en) Transporting pipeline for cold thermal fluid
GB1237294A (en) Dual heat resistant seal
US2103981A (en) Expansion joint structure
ATE23620T1 (en) DISTRICT HEATING LINE THAT CAN BE RAILED WITHOUT COMPENSATORS.
GB1332125A (en) Recuperative burners
GB1479144A (en) Radiant tube heating devices
GB1138144A (en) Composite tube type heat exchangers
FR2445925A1 (en) District heating system medium supply - has inner pipe sockets with radial flanges against which outer ones rear
JPS528520A (en) Expansion pipe joint for high temperature and high pressure piping
GB1421350A (en) Heat transfer devices
SU646026A1 (en) Heat-insulated column for forcing heat carrier to seam
GB1246385A (en) Thermal insulating tubing
GB1411732A (en) Thermally insulating sleeve
GB1124679A (en) Improvements in flue pipes
ATE127898T1 (en) PRODUCTION METHOD FOR UNDERGROUND PIPELINES FROM HEAT-INSULATED CONCENTRIC PIPES AND PIPELINE AND PIPE ELEMENT THEREFOR.
GB1065711A (en) Thermal insulation of pipes
JPS61136088A (en) Refractory gasket

Legal Events

Date Code Title Description
ST Notification of lapse