US4406677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual cyclone dust separator for exhaust gases
Assignee: Individual
•
Filing: 1981-11-25
•
Granted: 1983-09-27
•
Expires: 2001-11-25
Abstract
Abstract A cyclone dust separator for the separation of coarse, small and very fine particles of dust from a dust-laden current of exhaust air or exhaust gas, which is conveyed eccentrically from above, and via a dust pipe, from a fan to a separating vessel is provided. The separated particles of dust are intercepted in a collector mounted underneath the separating vessel, a pipe conduit being inserted centrally from above into the separating vessel in order to lead off the current of pure air or pure gas, while a round upper part, in which the dust pipe terminates eccentrically, is mounted on the separating vessel. In the upper part the mixture of dust and air is subdivided into two separate currents taking an approximately circular coarse. This enables coarse, fine and very fine dust to be separated in an optimum manner even when considerable quantities of dust-laden air have to pass through the apparatus.
Inventors
- 👤 Hans-Johann Obermeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:38
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B04; B04C; B04C3/00; B04C5/00; B04C5/02; B04C7/00; B04C9/00; F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027; B04C2009/002
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
445 words
A dual cyclone dust separator for exhaust gases and the like comprising: (a) a first annular separator chamber having an outer curved wall between upper and lower walls and spiral channel means extending from an inlet to an outlet therein for directing a stream of dust-laden exhaust gases along a spiral path substantially horizontal from said inlet to said outlet, an inlet conduit connected to said inlet of said first annular chamber for directing said stream of dust-laden gases into said first annular chamber and along said spiral path, a second separator chamber extending downwardly from said lower wall of said first annular chamber, and a first exhaust conduit extending upwardly from said second separator chamber, said spiral channel means having an inlet end spaced along said path downstream of said inlet and upstream of said outlet and extending tangentially and progressively downwardly along said outer wall and into said second separator chamber for diverting dust particles separated from said exhaust gases along said outer wall and a first portion of said stream of exhaust gases from said first annular chamber into said second separator chamber while allowing the remaining portion of said stream of said exhaust gases to continue along said spiral path towards said outlet; (b) said second separator chamber for separating said dust particles from said first portion including means for diverting said first portion of said stream of exhaust gases upwardly through said first exhaust conduit; (c) a third annular separator chamber having a curved outer wall and an inlet tangential to said outer wall and connected to said outlet of said first annular separator chamber, said third annular chamber having spiral deflector means for directing said remaining portion of said stream of said exhaust gases from said first annular separator along a further spiral path substantially vertical in said third chamber, a second exhaust conduit spaced along said further path from said inlet of said third annular separator chamber and being disposed tangentially to said curved outer wall and extending downwardly for diverting further dust particles and a second portion of said stream of exhaust gases from said third annular separator chamber while allowing the remaining portion of said stream of exhaust gases to continue along said further spiral path, and a third exhaust conduit downstream along said further spiral path from said second exhaust conduit and disposed tangentially to said curved outer wall for exhausting said remaining portion of said exhaust gases in said third annular separator; and (d) separating means connected to said second exhaust conduit for separating said further dust particles from said second portion of said stream of exhaust gases and receiving said further dust particles.
Claim 2
Dependent Claim
445 words
A dual cyclone dust separator for exhaust gases and the like comprising: (a) a first annular separator chamber having an outer curved wall between upper and lower walls and spiral channel means extending from an inlet to an outlet therein for directing a stream of dust-laden exhaust gases along a spiral path substantially horizontal from said inlet to said outlet, an inlet conduit connected to said inlet of said first annular chamber for directing said stream of dust-laden gases into said first annular chamber and along said spiral path, a second separator chamber extending downwardly from said lower wall of said first annular chamber, and a first exhaust conduit extending upwardly from said second separator chamber, said spiral channel means having an inlet end spaced along said path downstream of said inlet and upstream of said outlet and extending tangentially and progressively downwardly along said outer wall and into said second separator chamber for diverting dust particles separated from said exhaust gases along said outer wall and a first portion of said stream of exhaust gases from said first annular chamber into said second separator chamber while allowing the remaining portion of said stream of said exhaust gases to continue along said spiral path towards said outlet; (b) said second separator chamber for separating said dust particles from said first portion including means for diverting said first portion of said stream of exhaust gases upwardly through said first exhaust conduit; (c) a third annular separator chamber having a curved outer wall and an inlet tangential to said outer wall and connected to said outlet of said first annular separator chamber, said third annular chamber having spiral deflector means for directing said remaining portion of said stream of said exhaust gases from said first annular separator along a further spiral path substantially vertical in said third chamber, a second exhaust conduit spaced along said further path from said inlet of said third annular separator chamber and being disposed tangentially to said curved outer wall and extending downwardly for diverting further dust particles and a second portion of said stream of exhaust gases from said third annular separator chamber while allowing the remaining portion of said stream of exhaust gases to continue along said further spiral path, and a third exhaust conduit downstream along said further spiral path from said second exhaust conduit and disposed tangentially to said curved outer wall for exhausting said remaining portion of said exhaust gases in said third annular separator; and (d) separating means connected to said second exhaust conduit for separating said further dust particles from said second portion of said stream of exhaust gases and receiving said further dust particles.
Claim 3
Dependent Claim
36 words
A dual cyclone dust separator in accordance with claim 1 wherein said inlet end of said spiral channel means is located at an angle of 90° to 120° from said inlet in said first annular chamber.
Claim 4
Dependent Claim
34 words
A dual cyclone dust separator in accordance with claim 2 wherein said inlet end of said spiral channel means is located at an angle of 110° from said inlet in said first annular chamber.
Claim 5
Dependent Claim
32 words
A dual cyclone dust separator in accordance with claim 1 wherein said inlet conduit connected to said inlet of said first annular chamber extends axially with respect to said third annular chamber.
Claim 6
Dependent Claim
29 words
A dual cyclone dust separator in accordance with claim 1 wherein said second chamber extending downwardly from said lower wall of said first annular chamber is a conical chamber.
Claim 7
Dependent Claim
38 words
A dual cyclone dust separator in accordance with claim 5 further comprising a further separating chamber extending downwardly from said conical chamber for receiving said dust particles separated from said first portion of said stream of exhaust gases.
Claim 8
Dependent Claim
94 words
A dual cyclone dust separator in accordance with claim 6 wherein said separating means connected to said second exhaust conduit comprises wall means defining a housing surrounding said conical chamber and further separating chamber, said wall means including filter means, said second exhaust conduit being connected to said wall means for directing said further dust particles and second portion of said stream of exhaust gases from said third annular chamber into said housing and filtering said second portion of said stream of exhaust gases to separate said exhaust gases from said further dust particles.
Claim 9
Dependent Claim
61 words
A dual cyclone dust separator in accordance with claim 7 wherein said further separating chamber comprises outlet means communicating with the interior of said housing for permitting at least a part of said first portion of said stream of exhaust gases in said further separating chamber to pass through said housing whereby said exhaust gases are filtered by said filter means.
Claim 10
Dependent Claim
35 words
A dual cyclone dust separator in accordance with claim 1 wherein both said second exhaust conduit and said third exhaust conduit include valve means for controlling the relative proportions of said exhaust gases passing therethrough.
References Cited (Backward Citations)
US445390A
Cited
US821819A
Cited
US1908181A
Cited
US1897195A
Cited
US1928702A
Cited
US3091334A
Cited
US3960734A
Cited
US4246013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-26 | 1987-03-28 | 1987-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-26 | 1991-03-28 | 1991-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-26 | 1995-03-28 | 1995-09-27 | $7700.00 | Window Closed / Lapsed |