US3900301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air treatment apparatus
Assignee: INTREPRINDEREA METALUL ROSU CLUJ
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Filing: 1974-07-16
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Granted: 1975-08-19
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Expires: 1994-07-16
Abstract
Abstract An air treatment apparatus having a pair of oppositely effective axial-flow fans in a centrally disposed blending chamber with a rectangular prismatic shape from which rectangular air ducts extend from either side for carrying air which has been cooled and humidified, heated and humidified, heated, fresh or recycled, with or without filtering. Each duct delivers similarly treated air or disimilarly treated air. The blending chambers is provided with adjustable dampers for admitting selected ratios of fresh and recycled air which passes through water sprays and is driven by the fans through heaters and demisters provided in the ducts.
Inventors
- 👤 Petre Constantinescu
- 👤 Emil Oachis
- 👤 Dorin Trimbitas
- 👤 Doina Alexandrescu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:04
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/04; F24F3/00; F24F3/12; F24F3/14; Y; Y10; Y10S; Y10S261/00; Y10S261/11; Y10S261/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
198 words
AN AIR TREATMENT APPARATUS COMPRISING: A RECTANGULAR PRISMATIC HOUSING DEFINING A BLENDING CHAMBER, RECTANGULAR EXTENSIONS OF TWO OPPOSITE SIDES OF SAID BLENDING CHAMBER DEFINING DUCTS FOR CARRYING AN AIR FLOW FROM SAID BLENDING CHAMBER, AIR INLETS FORMED IN THE TOP WALL AND TWO OPPOSITE FACING SAID WALLS OF SAID BLENDING CHAMBER AT RIGHT ANGLES TO SAID DUCTS, AIR OUTLETS FORMED IN THE TWO REMAINING SIDE WALLS OF SAID BLENDING CHAMBER FEEDING INTO SAID DUCTS, A PAIR OF OPPOSITELY EFFECTIVE AXIAL FLOW FANS MOUNTED ON A COMMON DRIVE SHAFT IN SAID BLENDING CHAMBER AND RESPECTIVELY JUXTAPOSED WITH SAID OUTLETS, MEANS FOR ROTATING SAID FANS IN THE SAME DIRECTION, RESPECTIVE MEANS ADJACENT EACH OF SAID FANS FOR HUMIDIFYING AIR DRAWN INTO SAID BLENDING CHAMBER BY SAID FANS, RESPECTIVE MEANS ADJACENT EACH OF SAID FANS FOR COOLING AIR DRAWN INTO SAID BLENDING CHAMBER BY SAID FAN, RESPECTIVE AIR HEATING MEANS DOWNSTREAM OF EACH OF SAID OUTLETS IN SAID DUCTS FOR HEATING THE AIR TRAVERSING SAME, RESPECTIVE TURBULENCE ABATEMENT CHAMBERS DOWNSTREAM OF EACH OF SAID OUTLETS, RESPECTIVE DEMISTERS SPANNING SAID DUCTS DOWNSTREAM OF EACH OF SAID OUTLETS, AND MEANS CONNECTING AT LEAST ONE OF SAID INLETS WITH A SOURCE OF FRESH AIR.
Claim 2
Dependent Claim
198 words
AN AIR TREATMENT APPARATUS COMPRISING: A RECTANGULAR PRISMATIC HOUSING DEFINING A BLENDING CHAMBER, RECTANGULAR EXTENSIONS OF TWO OPPOSITE SIDES OF SAID BLENDING CHAMBER DEFINING DUCTS FOR CARRYING AN AIR FLOW FROM SAID BLENDING CHAMBER, AIR INLETS FORMED IN THE TOP WALL AND TWO OPPOSITE FACING SAID WALLS OF SAID BLENDING CHAMBER AT RIGHT ANGLES TO SAID DUCTS, AIR OUTLETS FORMED IN THE TWO REMAINING SIDE WALLS OF SAID BLENDING CHAMBER FEEDING INTO SAID DUCTS, A PAIR OF OPPOSITELY EFFECTIVE AXIAL FLOW FANS MOUNTED ON A COMMON DRIVE SHAFT IN SAID BLENDING CHAMBER AND RESPECTIVELY JUXTAPOSED WITH SAID OUTLETS, MEANS FOR ROTATING SAID FANS IN THE SAME DIRECTION, RESPECTIVE MEANS ADJACENT EACH OF SAID FANS FOR HUMIDIFYING AIR DRAWN INTO SAID BLENDING CHAMBER BY SAID FANS, RESPECTIVE MEANS ADJACENT EACH OF SAID FANS FOR COOLING AIR DRAWN INTO SAID BLENDING CHAMBER BY SAID FAN, RESPECTIVE AIR HEATING MEANS DOWNSTREAM OF EACH OF SAID OUTLETS IN SAID DUCTS FOR HEATING THE AIR TRAVERSING SAME, RESPECTIVE TURBULENCE ABATEMENT CHAMBERS DOWNSTREAM OF EACH OF SAID OUTLETS, RESPECTIVE DEMISTERS SPANNING SAID DUCTS DOWNSTREAM OF EACH OF SAID OUTLETS, AND MEANS CONNECTING AT LEAST ONE OF SAID INLETS WITH A SOURCE OF FRESH AIR.
Claim 3
Dependent Claim
25 words
An air treatment apparatus as defined in claim 1, further comprising: adjustable dampers across all of said inlets for controlling the flow of air therethrough.
Claim 4
Dependent Claim
43 words
An air treatment apparatus as defined in claim 2, further comprising: means responsive to a predetermined level of humidity for automatically controlling said adjustable dampers interlockingly on each of said inlets; and a removable air filter on at least one of said inlets.
Claim 5
Dependent Claim
60 words
An air treatment apparatus as defined in claim 1, wherein: said humidifying and cooling means are arcuate spray pipes centered on said drive shaft; said spray pipes are provided with a plurality of nozzles; and said spray pipes are connected with a source of temperature-controlled water under pressure for creating an array of wateR particles adjacent each of said fans.
Claim 6
Dependent Claim
60 words
An air treatment apparatus as defined in claim 1 wherein: said air outlets are circular windows formed in said two remaining side walls of said blending chamber; and said circular windows are provided with circular inwardly converging flanges facing the interior of said blending chamber defining constrictions for increasing the velocity and mixing of water particles with air flowing therethrough.
Claim 7
Dependent Claim
26 words
An air treatment apparatus as defined in claim 1 wherein: said air heating means are annular heated-fluid passageways positioned in said ducts and surrounding said outlets.
Claim 8
Dependent Claim
22 words
An air treatment apparatus as defined in claim 1 wherein: said turbulence abatement chambers are defined by the walls of said ducts.
Claim 9
Dependent Claim
41 words
An air treatment apparatus as defined in claim 1 wherein: said means for rotating said fans is a motor mounted in said blending chamber in alignment with said outlets; and said fans are mounted on drive shafts extending from said motor.
Claim 10
Dependent Claim
218 words
An air treatment apparatus as defined in claim 1 further comprising: adjustable dampers across all of said inlets for controlling the flow of air therethrough; means responsive to a predetermined level of humidity for automatically controlling said adjustable dampers interlockingly on each of said inlets; a removable air filter on at least one of said inlets; and said humidifying and cooling means are arcuate spray pipes centered on said drive shaft; said spray pipes are provided with a plurality of nozzles; said spray pipes are connected with a source of temperature controlled water under pressure for creating an array of water particles adjacent each of said fans; and said air outlets are circular windows formed in said two remaining side walls of said blending chamber; said circular windows are provided with circular inwardly converging flanges facing the interior of said blending chamber defining constrictions for increasing the velocity and mixing of water particles with air flowing therethrough; and said air heating means are annular passageways carrying a heated fluid and positioned in said ducts surrounding said outlets; and said turbulence abatement chambers are defined by the walls of said ducts; said fans are mounted on a common drive shaft; and a catch basin is provided said housing for collecting excess water from said spray pipes and said demisters.
Claim 11
Dependent Claim
22 words
The apparatus defined in claim 9 wherein said means for rotating said fan is a motor on said shaft between said fans.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |