US3748997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical insulated fan and temperature conditioning penthouse unit
Assignee: TEMPMASTER CORP
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Filing: 1972-04-06
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Granted: 1973-07-31
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Expires: 1992-04-06
Abstract
Abstract A penthouse type air conditioning unit has an acoustically insulated fan which separates the fan motor from the fan discharge end portion by compartments within the unit. Each compartment is acoustically insulated with the discharge compartment being interconnectable with the conventional air conditioning ductwork. The fan impeller is mounted for exposed rotation without the use of the usual enclosure directional scroll and creates the pressure differential for conditioned air flow through the interconnected air ductwork. A target sound attenuator is mounted in the motor compartment at a preselected distance from the fan inlet to attenuate the predominant sound wave frequency generated by the fan. A second embodiment separates the fan motor and the fan impeller by an acoustical compartment which encloses the impeller and interconnects with air conditioning ductwork. A target sound attenuator is supported a preselected distance away from the fan inlet, said distance corresponding to the predominant sound wave frequency generated by the fan.
Inventors
- 👤 F Dean
- 👤 J Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:52
CPC Classifications
F; F24; F24F; F24F3/00; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D29/00; F04D29/66; F04D29/661; F04D29/663; F04D29/664; F24F13/00; F24F13/24; Y; Y10; Y10S; Y10S454/00; Y10S454/906
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
140 words
An air conditioning penthouse, said penthouse forming a substantially enclosed structure having side walls and a top cover, said penthouse comprising an inlet, said inlet being connectable with return or outside air conveyance system, at least one outlet, said outlet being connectable with conditioned air conveyance system, a fan means, said fan means having an impeller of the centrifugal type without a scroll surrounding same and a motor means, said motor means operable to drive said impeller, and an acousticAl insulating wall, said insulating wall acoustically separating said motor means from said impeller, said impeller located in communicating relationship with said outlet and operable to create conditioned air flow out of said penthouse through said outlet, said acoustically insulating wall substantially attenuating objectionable noise produced by said motor means and precluding same from accompanying said air flow through said outlet.
Claim 2
Dependent Claim
140 words
An air conditioning penthouse, said penthouse forming a substantially enclosed structure having side walls and a top cover, said penthouse comprising an inlet, said inlet being connectable with return or outside air conveyance system, at least one outlet, said outlet being connectable with conditioned air conveyance system, a fan means, said fan means having an impeller of the centrifugal type without a scroll surrounding same and a motor means, said motor means operable to drive said impeller, and an acousticAl insulating wall, said insulating wall acoustically separating said motor means from said impeller, said impeller located in communicating relationship with said outlet and operable to create conditioned air flow out of said penthouse through said outlet, said acoustically insulating wall substantially attenuating objectionable noise produced by said motor means and precluding same from accompanying said air flow through said outlet.
Claim 3
Dependent Claim
37 words
A combination as in claim 1 including a target sound attenuator, means for mounting said target sound attenuator within said penthouse on said motor side of said acoustical insulating wall a preselected distance away from said fan.
Claim 4
Dependent Claim
30 words
A combination as in claim 2 including means mounted within said penthouse on said motor side of said acoustical wall for conditioning air flow entering said penthouse through said inlet.
Claim 5
Dependent Claim
21 words
A combination as in claim 2 including means for acoustically insulating said side walls and said top cover of said penthouse.
Claim 6
Dependent Claim
30 words
A combination as in claim 4 including means mounted within said penthouse on said motor side of said acoustical wall for conditioning air flow entering said penthouse through said inlet.
Claim 7
Dependent Claim
45 words
A combination as in claim 2 wherein said acoustical insulating wall has an aperture defined therein, said fan having an inlet structure interconnecting with said impeller, and means for resiliently mounting said inlet structure in communicating relationship with said aperture in said acoustically insulating wall.
Claim 8
Dependent Claim
31 words
A combination as in claim 6 including means mounted within said penthouse on said motor side of said acoustical wall on conditioning return air flow entering said penthouse through said inlet.
Claim 9
Dependent Claim
21 words
A combination as in claim 7 including means for acoustically insulating said side walls and said top cover of said penthouse.
Claim 10
Dependent Claim
32 words
A combination as in claim 6 wherein said penthouse has an acoustically insulated floor structure interconnected with said side walls, means for resiliently mounting said motor and said impeller on said floor.
Claim 11
Dependent Claim
27 words
The combination as in claim 1 including means at least partially enclosing said impeller for producing a uniform velocity profile for the air leaving through said outlet.
Claim 12
Dependent Claim
101 words
A self contained fan unit, said fan unit comprising an acoustically insulated structure, said structure having an inlet and an outlet, a fan means, said fan means having an impeller of the centrifugal type without a scroll surrounding same and a motor means, said motor means operable to drive said impeller, means for mounting said impeller within said acoustically insulated structure, means for mounting said motor exterior of said acoustically insulated structure, said fan unit thereby operable to acoustically attenuate noise produced by said impeller and to create an air flow out said outlet being substantially free of objectionable impeller noise.
Claim 13
Dependent Claim
101 words
A self contained fan unit, said fan unit comprising an acoustically insulated structure, said structure having an inlet and an outlet, a fan means, said fan means having an impeller of the centrifugal type without a scroll surrounding same and a motor means, said motor means operable to drive said impeller, means for mounting said impeller within said acoustically insulated structure, means for mounting said motor exterior of said acoustically insulated structure, said fan unit thereby operable to acoustically attenuate noise produced by said impeller and to create an air flow out said outlet being substantially free of objectionable impeller noise.
Claim 14
Dependent Claim
29 words
A combination as in claim 10 an inlet target sound attenuator, means for mounting said target sound attenuator exteriorally of said structure a preselected distance away from said fan.
Claim 15
Dependent Claim
31 words
The combination as in claim 11 wherein said structure includes a means at least partially enclosing said impeller for producing a uniform velocity profile for the air leaving through said outlet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |