Patent US4533080A successfully refreshed from Google Patents.
US4533080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air terminal--air handler interface
Assignee: Carrier Corp
•
Filing: 1985-01-16
•
Granted: 1985-08-06
•
Expires: 2005-01-16
Abstract
Abstract In each zone of a variable volume air distribution system, terminal satisfaction is determined. Responsive to the determination of the number of dissatisfied terminals, the air handling unit is controlled to minimize the output of the air handling unit while providing a predetermined degree of terminal satisfaction. The determination of the satisfaction of the terminals is based upon a direct or indirect sensing of temperature in the zones.
Inventors
- 👤 William E. Clark
- 👤 James Carucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:07
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1925; F; F24; F24F; F24F11/00; F24F11/62; F24F11/63; F24F11/70; F24F11/72; F24F11/74; F24F11/77; F24F11/88; G05D23/1917; F24F11/30; F24F13/00; F24F13/08; F24F13/082; F24F2013/087; F24F2110/00; F24F2110/10; F24F2110/40; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
142 words
A variable air volume distribution system for conditioned air comprising: duct means including a main duct and a plurality of branches; fan means for supplying variable amounts of conditioned air to said duct means; means for controlling the amount of conditioned air supplied by said fan means; at least one variable air volume terminal means connected to each of said branches for variably controlling the amount of conditioned air continuously supplied by each of said branches to its related zone; and means for determining terminal satisfaction for at least one of said terminal means connected to each of said branches and for regulating said means for controlling the amount of conditioned air supplied responsive to terminal satisfaction and including means for maintaining the number of dissatisfied terminals within a predetermined range whereby a minimum acceptable output for said fan means is maintained.
Claim 2
Dependent Claim
142 words
A variable air volume distribution system for conditioned air comprising: duct means including a main duct and a plurality of branches; fan means for supplying variable amounts of conditioned air to said duct means; means for controlling the amount of conditioned air supplied by said fan means; at least one variable air volume terminal means connected to each of said branches for variably controlling the amount of conditioned air continuously supplied by each of said branches to its related zone; and means for determining terminal satisfaction for at least one of said terminal means connected to each of said branches and for regulating said means for controlling the amount of conditioned air supplied responsive to terminal satisfaction and including means for maintaining the number of dissatisfied terminals within a predetermined range whereby a minimum acceptable output for said fan means is maintained.
Claim 3
Dependent Claim
148 words
A variable air volume distribution system for conditioned air comprising: duct means including a main duct and a plurality of branches; fan means for supplying variable amounts of conditioned air to said duct means; means for controlling the amount of conditioned air supplied by said fan means; at least one variable air volume terminal means connected to each of said branches for variably controlling the amount of conditioned air continuously supplied by each of said branches to its related zone; and means for determining terminal satisfaction for at least one of said terminal means connected to each of said branches and for regulating said means for controlling the amount of conditioned air supplied responsive to terminal satisfaction and including means for periodically reducing the output of said fan means when a predetermined number of terminals are satisfied whereby a minimum acceptable output for said fan means is maintained.
Claim 4
Dependent Claim
148 words
A variable air volume distribution system for conditioned air comprising: duct means including a main duct and a plurality of branches; fan means for supplying variable amounts of conditioned air to said duct means; means for controlling the amount of conditioned air supplied by said fan means; at least one variable air volume terminal means connected to each of said branches for variably controlling the amount of conditioned air continuously supplied by each of said branches to its related zone; and means for determining terminal satisfaction for at least one of said terminal means connected to each of said branches and for regulating said means for controlling the amount of conditioned air supplied responsive to terminal satisfaction and including means for periodically reducing the output of said fan means when a predetermined number of terminals are satisfied whereby a minimum acceptable output for said fan means is maintained.
Claim 5
Independent Claim
129 words
A method for variably controlling the distribution of conditioned air comprising the steps of: supplying conditioned air to a plurality of zones; determining terminal satisfaction by sampling at least on terminal in each zone; variably controlling the amount of conditioned air supplied to each of the plurality of zones responsive to terminal satisfaction by: (a) determining the number of dissatisfied terminals; (b) comparing the number of dissatisfied terminals to a first predetermined number; (c) if the number of dissatisfied terminals is greater than or equal to the first predetermined number, increasing the amount of conditioned air supplied to the plurality of zones; and (d) if the number of dissatisfied terminals is less than the second predetermined number, decreasing the amount of conditioned air supplied to the plurality of zones.
Claim 6
Independent Claim
129 words
A method for variably controlling the distribution of conditioned air comprising the steps of: supplying conditioned air to a plurality of zones; determining terminal satisfaction by sampling at least on terminal in each zone; variably controlling the amount of conditioned air supplied to each of the plurality of zones responsive to terminal satisfaction by: (a) determining the number of dissatisfied terminals; (b) comparing the number of dissatisfied terminals to a first predetermined number; (c) if the number of dissatisfied terminals is greater than or equal to the first predetermined number, increasing the amount of conditioned air supplied to the plurality of zones; and (d) if the number of dissatisfied terminals is less than the second predetermined number, decreasing the amount of conditioned air supplied to the plurality of zones.
Claim 7
Dependent Claim
39 words
The method of claim 3 further including the step of maintaining the amount of conditioned air supplied as long as the number of dissatisfied terminals is less than the first predetermined number and greater than the second predetermined number.
Claim 8
Independent Claim
109 words
A method for variably controlling the distribution of conditioned air comprising the steps of: supplying conditioned air to a plurality of zones; determining terminal satisfaction by sampling at least one terminal in each zone; variably controlling the amount of conditioned air supplied to each of the plurality of zones responsive to terminal satisfaction by: (a) periodically determining if there are any dissatisfied terminals; (b) if there are no dissatisfied terminals, periodically reducing the amount of conditioned air supplied until at least one terminal is dissatisfied; and (c) if any of the terminals is dissatisfied, periodically increasing the amount of conditioned air supplied until all of the terminals are satisfied.
Claim 9
Independent Claim
109 words
A method for variably controlling the distribution of conditioned air comprising the steps of: supplying conditioned air to a plurality of zones; determining terminal satisfaction by sampling at least one terminal in each zone; variably controlling the amount of conditioned air supplied to each of the plurality of zones responsive to terminal satisfaction by: (a) periodically determining if there are any dissatisfied terminals; (b) if there are no dissatisfied terminals, periodically reducing the amount of conditioned air supplied until at least one terminal is dissatisfied; and (c) if any of the terminals is dissatisfied, periodically increasing the amount of conditioned air supplied until all of the terminals are satisfied.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |