EP0091413B1
Expired / Lapsed
EP
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Container through which a gas flows, preferably a muffler, with fiberglass filling and method and apparatus for filling the same
Assignee: Owens-Corning Sweden owens-Corning Fibe AB
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Filing: 1983-03-17
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Granted: 1987-05-20
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Expires: 2003-03-17
Abstract
Abstract The invention relates to a container for fiberglass wool, as well as a method and apparatus for producing a continuous length of fiberglass wool and for filling the container through which a gas flows, e.g. a muffler, with said wool. The apparatus comprises a feeder means (7) which advances multifiber thread (2) to a nozzle (9) into which compressed air is blown which imparts movement to the thread at the same time as the fibers of the thread are blown apart and entangled so as to form continuous wool. The wool is blown directly into the container (13) while air is evacuated by a suction fan (18).
Inventors
- 👤 Bengt-Erik Ingemansson
- 👤 Jan Erik Hedman
- 👤 Nils Häkan Ivar Larsson
- 👤 Bertil Eugen Björk
- 👤 Knut Göran Knutsson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; B; B65; B65B; B65B1/00; B65B1/04; B65B1/16; F01N1/00; F01N1/24; F01N2310/00; F01N2310/02; F01N2450/00; F01N2450/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
Container for inclusion in a noise muffling system for a combustion engine and comprising an outer jacket (14) and a gas duct (15) defined by a wall through which there is at least some gas flow and which is surrounded by the outer jacket, said outer jacket and said wall defining between them a space containing fiberglass, characterized in thatthe fiberglass filling consists of at least one continuous thread packed into the space.
Claim 2
Dependent Claim
73 words
Container for inclusion in a noise muffling system for a combustion engine and comprising an outer jacket (14) and a gas duct (15) defined by a wall through which there is at least some gas flow and which is surrounded by the outer jacket, said outer jacket and said wall defining between them a space containing fiberglass, characterized in thatthe fiberglass filling consists of at least one continuous thread packed into the space.
Claim 3
Dependent Claim
114 words
Method of inserting fiberglass wool into a space in a container as described in claim 1, characterized in that a multifiber fiberglass thread (2) having substantially continuous filaments is fed into one end of a nozzle (9) and is advanced through the nozzle with the aid of compressed air which is blown into the nozzle and causes the fibers of the thread to separate and become entangled, so that the thread emerges from the other end of the nozzle as a continuous length of fiberglass wool, which is blown by the effect of the compressed air through an opening into the container space at the same time as air is evacuated from the space.
Claim 4
Dependent Claim
19 words
Method according to Claim 2, characterized in that a thread (2) with continuous filaments is fed into the nozzle.
Claim 5
Dependent Claim
53 words
Method according to Claim 2 or 3, characterized in that the thread (2) is advanced between a pair of feed rollers (20, 21) to the nozzle (9) and that the velocity of the air through the nozzle is chosen so that the thread is held in tension between the rollers and the nozzle.
Claim 6
Dependent Claim
36 words
Method according to one of Claims 2-4, characterized in that the thread (2) is deflected to break up the bonding agent between the fibers of the thread before the thread is fed into the nozzle (9).
Claim 7
Dependent Claim
34 words
Method according to Claim 4 or 5, characterized in that the filling process is initiated by starting the air flow to the nozzle (9) before starting the thread feed between the rollers (20, 21).
Claim 8
Dependent Claim
67 words
Method according to one of Claims 4-6, characterized in that the amount of fiberglass wool in the container (14) is measured by direct or indirect measurement of the length of the thread (2) advanced between the rollers (20, 21) and that; when the desired amount has been reached, the feed between the rollers is stopped and the thread is cut at the outlet side of the nozzle.
Claim 9
Dependent Claim
39 words
Method according to one of Claims 2-7, characterized in that the volumetric weight of the fiberglass wool is regulated by regulating one or more of the parameters feed rate, air velocity and amount of air through the nozzle (9).
Claim 10
Dependent Claim
38 words
Method according to one of Claims 2-8, characterized in that the degree of packing of the fiberglass wool in the container (14) is regulated by regulating the capacity of a suction fan (18) connected to the container (14).
Claim 11
Dependent Claim
48 words
Method according to one of Claims 2-9, characterized in that the container (14) is mounted directly after the nozzle (9) in such a manner that air from the surrounding atmosphere can flow in directly after the nozzle and into the container together with the air from the nozzle.
Claim 12
Dependent Claim
38 words
Method according to one of Claims 2-10, characterized in that the container is fixed against a support (12) directly after the nozzle (9) and that the fiberglass wool is blown from the nozzle directly into the container (14).
Claim 13
Dependent Claim
25 words
Method according to one of Claims 2-10, characterized in that the fiberglass wool is blown into the container (14) via a hose or drum (50).
Claim 14
Dependent Claim
100 words
Method according to one of Claims 2-12, in which the container (14) is to be included in a noise muffling system for a combustion engine and has an inner gas duct (15) with a wall through which there is at least some gas flow, characterized in that the fiberglass wool is blown in through an opening in the container into a space between the gas duct and the container jacket at the same time as air is evacuated from said space through the perforations in the duct with the aid of a suction fan (18) connected to the gas duct.
Claim 15
Dependent Claim
34 words
Method according to Claim 13, characterized in that the container opening, after filling of the container (14), is sealed at the same time as air is evacuated from the space filled with fiberglass wool.
Claim 16
Dependent Claim
157 words
Apparatus for inserting fiberglass wool according to the method as described in Claim 2 into a space in a container as described in Claim 1, characterized by a nozzle means (8) with at least one nozzle (9), which has an inlet and an outlet for a multifiber fiberglass thread (2) and an intermediate chamber (27) with a connection (28) to a compressed air source, said nozzle being made so that the compressed air advances the thread through the nozzle and separates and entangles the fibers of the thread, so that the thread when it emerges from the nozzle forms a continuous length of wool; feeder means (7) arranged to advance the thread from a magazine (1) to the nozzle means at a speed which is lower than the speed at which the compressed air strives to advance the thread through the nozzle; and a cutting means for the thread (2) disposed immediately after the nozzle (9) outlet.
Claim 17
Dependent Claim
39 words
Apparatus according to Claim 15, characterized by means (5) operating between the magazine (1) and the feeder means (7) which are disposed to take up the slack in the thread when stopped during intermittent operation of the feeder means.
Claim 18
Dependent Claim
35 words
Apparatus according to Claim 15 or 16, characterized by means (44) for deflecting the thread on its path from the magazine to the nozzle to break up the binding agent between thefibers of the thread.
References Cited (Backward Citations)
No citation records indexed.
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