US4392549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler noise suppressor
Assignee: INSTYTUT CHEMII NIEORGANICZNEJ UL
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Filing: 1982-03-03
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Granted: 1983-07-12
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Expires: 2002-03-03
Abstract
Abstract A boiler noise suppressor has one truss (2) mounted on a cover of an inlet flange (1), a perforated expansion nozzle (5), a pipe system (7) made of a several hundreds of pipes, a perforated outlet nozzle (8), at least one truss (11) mounted on a collar of the outlet nozzle. The pipe system (7) can be additionally cooled in a parallel-current- or a counter-current manner preferably by air or water. The boiler noise suppressor can be connected directly to the exhaust of blow-out steam of a single boiler or in a parallel connection to form batteries of suppressors by a connection with exhausts of blow-out steam from several boilers. The application of the noise suppressor renders it possible to reduce the noise level by more than 50% from 140-160 dB to 70-80 dB.
Inventors
- 👤 Stanislaw Wrobel
- 👤 Ryszard Wegrzyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:26
CPC Classifications
F; F01; F01B; F01B31/00; F01B31/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A noise suppressor for exhaust steam from high-pressure industrial-power boilers comprising a cylinder with sound deadener packing and with a truss attached to the cover of an inlet flange by means of brackets spaced from the cover and with a clearance, a perforated expansion nozzle, a pipe system of several hundreds of pipes, a perforated outlet nozzle of an included angle of the cone, at least one truss with a clearance mounted on a collar of an inlet nozzle and preferably inside the nozzle and wherein the ratio of the diameter of an outer cylinder to the diameter of the inlet flange in the cover is from 3 to 5, the ratio of the length of a perforated outlet nozzle to the diameter or said outer cylinder is at least 1, with the ratio of the length of the perforated expansion nozzle to the diameter of the inlet flange being at least 12.
Claim 2
Dependent Claim
153 words
A noise suppressor for exhaust steam from high-pressure industrial-power boilers comprising a cylinder with sound deadener packing and with a truss attached to the cover of an inlet flange by means of brackets spaced from the cover and with a clearance, a perforated expansion nozzle, a pipe system of several hundreds of pipes, a perforated outlet nozzle of an included angle of the cone, at least one truss with a clearance mounted on a collar of an inlet nozzle and preferably inside the nozzle and wherein the ratio of the diameter of an outer cylinder to the diameter of the inlet flange in the cover is from 3 to 5, the ratio of the length of a perforated outlet nozzle to the diameter or said outer cylinder is at least 1, with the ratio of the length of the perforated expansion nozzle to the diameter of the inlet flange being at least 12.
Claim 3
Dependent Claim
42 words
Noise suppressor as in claim 1, wherein it is connected directly with the steam exhaust blow-out nozzle of a single industrial-power boiler or in a parallel connection forms batteries of suppressors by the connection with exhaust of blow-out steam from several boilers.
Claim 4
Dependent Claim
19 words
Noise suppressor as in claim 1, wherein it is connected directly with a multiplicity of steam exhaust blow-out nozzles.
Claim 5
Dependent Claim
18 words
Noise suppressor as in claim 3, wherein a battery thereof is connected to the steam exhaust blow-out nozzles.
Claim 6
Dependent Claim
27 words
Noise suppressor as in claim 1, wherein there are means provided for cooling the pipe system and additionally alternating noise by a parallel or counter-current fluid flow.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |