Patent US2597355A successfully refreshed from Google Patents.
US4414818A
Expired / Lapsed
US
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Environmental control system
Assignee: BORG WARNER Ltd A BRITISH Co
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Filing: 1982-03-02
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Granted: 1983-11-15
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Expires: 2002-03-02
Abstract
Abstract An environmental control system has an evaporator section comprising an evaporator for extracting heat from (and dehumidifying) air destined for the controlled space or for exhaust--this air may be a controlled mixture of fresh and recycled air--and a chiller for extracting heat from a source such as well water and from a thermal store. The heat pump condenser section comprises a condenser for rejecting heat to air entering the space and a condenser receiver for rejecting heat to the store. The system includes a system controller (not shown) programmed to control operation in a manner tending to minimize the prime energy requirement.
Inventors
- 👤 Alan M. Turbard
- 👤 Peter N. Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:53
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/24; A01G9/246; F; F24; F24D; F24D11/00; F24D11/02; F24D11/0257; F24D11/0278; F24D11/0285; F24F; F24F12/00; F24F12/001; F24F12/002; F24F12/003; F25; F25B; F25B29/00; F25B29/003; F25B30/00; F25B30/06; F25B49/00; F25B49/02; F25B5/00; F25B5/02; F25B6/00; F25B6/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y02B; Y02B10/00; Y02B10/70; Y02B30/00; Y02B30/13; Y02B30/52; Y02B30/56; Y02P; Y02P60/00; Y02P60/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
An environmental control system comprising in combination: a non-reverse cycle heat pump, said heat pump including means for selectively extracting heat from a plurality of different heat sources, at least one of said sources being an airstream, said means including an evaporator for extracting heat energy from an air stream through which recirculated space air, fresh air, or mixtures thereof may be circulated; means for selectively rejecting the extracted heat into an air stream to provide heated environmental space air; means for recovering at least a portion of the rejected heat and utilizing the same to increase the heat content of at least one of said heat sources; and control means for selecting the heat sources and uses of the extracted heat in accordance with prevailing conditions and arranged so that, when available, heat is preferentially extracted from said air-stream source, said control means including means for selecting fresh air, recirculated space air, or a
Claim 2
Dependent Claim
155 words
An environmental control system comprising in combination: a non-reverse cycle heat pump, said heat pump including means for selectively extracting heat from a plurality of different heat sources, at least one of said sources being an airstream, said means including an evaporator for extracting heat energy from an air stream through which recirculated space air, fresh air, or mixtures thereof may be circulated; means for selectively rejecting the extracted heat into an air stream to provide heated environmental space air; means for recovering at least a portion of the rejected heat and utilizing the same to increase the heat content of at least one of said heat sources; and control means for selecting the heat sources and uses of the extracted heat in accordance with prevailing conditions and arranged so that, when available, heat is preferentially extracted from said air-stream source, said control means including means for selecting fresh air, recirculated space air, or a
Claim 3
Dependent Claim
33 words
A system as claimed in claim 1 including means to determine the proportions of fresh air and re-circulated space air in said mixture in accordance with the relative humidity of the space air.
Claim 4
Dependent Claim
68 words
A system as claimed in claim 1 including a condenser in said heat pump for delivering heat energy to a stream of air to be delivered to said control space, a thermally insulated storage tank and a condenser-receiver for delivering heat energy to water in said storage tank, and wherein an air stream out-flow from said evaporator is connected to said condenser for delivery to the controlled space.
Claim 5
Dependent Claim
25 words
A system as claimed in claim 3 including means to supply a further stream of air to said condenser for delivery to said controlled space.
Claim 6
Dependent Claim
24 words
A system as claimed in claim 4 including a damper arrangement for selectively supplying fresh air or re-circulated air as said further air stream.
References Cited (Backward Citations)
US4242872A
Cited
US4336692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |