US4025326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat reclaiming system
Assignee: Carrier Corp
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Filing: 1975-05-30
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Granted: 1977-05-24
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Expires: 1995-05-30
Abstract
Abstract A refrigeration unit for providing both heating and cooling employing two, closed circuit, mechanical vapor compression systems operatively connected by an indirect heat exchanger positioned between the discharge of the compressor and the condenser of a first cooling system, the exchanger also serving as the evaporator in the second heating system.
Inventors
- 👤 Louis H. Leonard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:44
CPC Classifications
F; F25; F25B; F25B29/00; F25B29/003; F25B7/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
Apparatus for reclaiming energy from a refrigeration system including a first closed loop vapor compression refrigeration circuit having a mechanical compressor arranged to discharge vapors of a first refrigerant into a condenser, a heat exchanger interposed between the compressor and the first condenser of the first circuit being operatively arranged to bring vapors of the first refrigerant discharged from said compressor into contact with one side of a heat transfer surface prior to said refrigerant entering said condenser, a second closed loop vapor compression refrigeration circuit having a reciprocating compressor being capable of raising the temperature of a second refrigerant and being arranged to draw said second refrigerant from the opposite side of the heat transfer surface contained within the heat exchanger and discharging vapors thereof into a heat reclaiming evaporator wherein the energy contained within said second refrigerant is recovered by a heat reclaiming substance, control means for sensing the temperature of the heat reclaiming substance leaving the heat reclaiming evaporator and regulating the output of the reciprocating compressor in response thereto.
Claim 2
Dependent Claim
30 words
The apparatus of claim 1 wherein said heating evaporator is positioned above said cooling condenser and the first refrigerant is gravity fed from the heating evaporator into the cooling condenser.
Claim 3
Dependent Claim
28 words
The apparatus of claim 2 wherein the capacity of either the heating evaporator and the cooling condenser is sufficient to supply the condensate needs of the cooling circuit.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |