US4495986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a variable volume multizone air conditioning unit
Assignee: Carrier Corp
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Filing: 1982-06-21
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Granted: 1985-01-29
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Expires: 2002-06-21
Abstract
Abstract A variable volume multizone unit is disclosed for simultaneously supplying variable amounts of cool, warm or neutral air to each zone, as required. The unit is under the overall control of a computer and controls dampers located at the unit to regulate the flow of cool and neutral or warm air to each zone individually and to control the total amount of air supplied to all of the zone.
Inventors
- 👤 William E. Clark
- 👤 Donald C. Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:20
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/0442; F24F11/00; F24F11/0001; F24F2011/0006
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A method of simultaneously supplying a variable volume of warm, cool or neutral air, as required, to a plurality of zones including the steps of: supplying neutral air from a variable supply means through an air cooling means only to all zones requiring cool air; regulating the amount of cooled neutral air supplied by the variable supply means to each zone requiring cool air; supplying neutral air from the variable supply means to all zones requiring warm or neutral air; regulating the amount of neutral air supplied by the variable supply means to each zone requiring warm or neutral air; and heating the neutral air supplied to those zones requiring warm air.
Claim 2
Independent Claim
112 words
A method of simultaneously supplying a variable volume of warm, cool or neutral air, as required, to a plurality of zones including the steps of: supplying neutral air from a variable supply means through an air cooling means only to all zones requiring cool air; regulating the amount of cooled neutral air supplied by the variable supply means to each zone requiring cool air; supplying neutral air from the variable supply means to all zones requiring warm or neutral air; regulating the amount of neutral air supplied by the variable supply means to each zone requiring warm or neutral air; and heating the neutral air supplied to those zones requiring warm air.
Claim 3
Dependent Claim
29 words
The method of claim 1 further including the step of regulating the variable air supply means in accordance with the amount of air supplied to all of the zones.
Claim 4
Dependent Claim
24 words
The method of claim 2 further including the steps of maintaining a selected minimum air flow in each zone independent of temperature control requirements.
Claim 5
Independent Claim
155 words
A method of simultaneously supplying variable amounts of warm, cool and neutral air, as required, to a plurality of zones in a building comprising the steps of: supplying variable amounts of neutral air from a variable air supply means through an air cooling means then through individually controlled first dampers into the zones requiring cool air; individually controlling the amount of cool air supplied through the first dampers into the zones requiring cool air; supplying variable amounts of neutral air from the variable air supply means serially through individually controlled second dampers and heating means into the zones requiring warm or neutral air; heating the air passing through the second dampers in each zone requiring warm air; individually controlling the amount of air supplied through the second dampers to each zone requiring warm or neutral air; and regulating the air supply means in accordance with the total air flow required in each of the zones.
Claim 6
Independent Claim
155 words
A method of simultaneously supplying variable amounts of warm, cool and neutral air, as required, to a plurality of zones in a building comprising the steps of: supplying variable amounts of neutral air from a variable air supply means through an air cooling means then through individually controlled first dampers into the zones requiring cool air; individually controlling the amount of cool air supplied through the first dampers into the zones requiring cool air; supplying variable amounts of neutral air from the variable air supply means serially through individually controlled second dampers and heating means into the zones requiring warm or neutral air; heating the air passing through the second dampers in each zone requiring warm air; individually controlling the amount of air supplied through the second dampers to each zone requiring warm or neutral air; and regulating the air supply means in accordance with the total air flow required in each of the zones.
Claim 7
Dependent Claim
25 words
The method of claim 4 wherein the first and second dampers of each zone are individually controlled in response to the temperature in that zone.
Claim 8
Dependent Claim
33 words
The method of claim 4 wherein the first and second dampers of each zone are additionally individually controlled to maintain a selected minimum air flow in each zone independent of temperature control requirements.
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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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |