US4831844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser with improved flow path
Assignee: Motors Liquidation Co
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Filing: 1988-05-26
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Granted: 1989-05-23
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Expires: 2008-05-26
Abstract
Abstract A condenser for an air conditioning system has a tube and fin design. The tubular flow path divides into two parallel paths at the condenser inlet. The two paths combine at a junction at a point about two thirds of the distance to the outlet. A single path connects the junction to the outlet. In general condensation of the refrigerant occurs in the dual path and liquid flows at high velocity in the single path to the outlet for better heat transfer and reduced liquid volume in the tubular path.
Inventors
- 👤 Durgaprasad S. Kadle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:54
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; F25; F25B; F25B39/00; F25B39/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
105 words
A condenser for a refrigeration system having means for carrying refrigerant through a serpentine circuit comprising; an inlet port and an outlet port, a plurality of heat exchange tubes coupled to the inlet port and routed through a serpentine path, a single heat exchange tube coupled to the outlet port and routed through a serpentine path, and a junction intermediate the inlet and outlet ports for coupling the plurality of tubes to the single tube, whereby refrigerant flows part way from the inlet port to the outlet port in plural paths and flows the remainder of the way to the outlet port in one path.
Claim 2
Dependent Claim
105 words
A condenser for a refrigeration system having means for carrying refrigerant through a serpentine circuit comprising; an inlet port and an outlet port, a plurality of heat exchange tubes coupled to the inlet port and routed through a serpentine path, a single heat exchange tube coupled to the outlet port and routed through a serpentine path, and a junction intermediate the inlet and outlet ports for coupling the plurality of tubes to the single tube, whereby refrigerant flows part way from the inlet port to the outlet port in plural paths and flows the remainder of the way to the outlet port in one path.
Claim 3
Dependent Claim
17 words
The invention as defined in claim 1 wherein the plurality of heat exchange tubes comprise two tubes.
Claim 4
Dependent Claim
118 words
A condenser for a refrigeration system having means for carrying refrigerant through a serpentine circuit comprising; an inlet port and an outlet port, a pair of heat exchange tubes coupled to the inlet port and routed through a serpentine path, a single heat exchange tube coupled to the outlet port and routed through a serpentine path, each serpentine path being comprised of straight tube sections joined by U-shaped bends, and a junction intermediate the inlet and outlet ports for coupling the pair of tubes to the single tube, whereby refrigerant flows part way from the inlet port to the outlet port in two paths and flows the remainder of the way to the outlet port in one path.
Claim 5
Dependent Claim
118 words
A condenser for a refrigeration system having means for carrying refrigerant through a serpentine circuit comprising; an inlet port and an outlet port, a pair of heat exchange tubes coupled to the inlet port and routed through a serpentine path, a single heat exchange tube coupled to the outlet port and routed through a serpentine path, each serpentine path being comprised of straight tube sections joined by U-shaped bends, and a junction intermediate the inlet and outlet ports for coupling the pair of tubes to the single tube, whereby refrigerant flows part way from the inlet port to the outlet port in two paths and flows the remainder of the way to the outlet port in one path.
Claim 6
Dependent Claim
29 words
The invention as defined in claim 3 wherein the junction comprises a lateral branch coupled to a U-shaped bend for connecting the pair of tubes to the single tube.
Claim 7
Dependent Claim
144 words
A condenser for a refrigeration system having means for carrying refrigerant through a serpentine circuit comprising; an inlet port for admitting hot refrigerant gas to the condenser and an outlet port for discharging liquid refrigerant, a plurality of heat exchange tubes coupled to the inlet port and routed through a serpentine path for cooling the gas until it condenses to liquid state, a single heat exchange tube coupled to the outlet port and routed through a serpentine path for cooling the liquid, and a junction intermediate the inlet and outlet ports for coupling the plurality of tubes to the single tube at the approximate point that the refrigerant becomes wholly liquid, whereby refrigerant flows from the inlet port as a gas and as a two phase mixture primarily in plural paths and flows in liquid phase to the outlet port primarily in one path.
Claim 8
Dependent Claim
144 words
A condenser for a refrigeration system having means for carrying refrigerant through a serpentine circuit comprising; an inlet port for admitting hot refrigerant gas to the condenser and an outlet port for discharging liquid refrigerant, a plurality of heat exchange tubes coupled to the inlet port and routed through a serpentine path for cooling the gas until it condenses to liquid state, a single heat exchange tube coupled to the outlet port and routed through a serpentine path for cooling the liquid, and a junction intermediate the inlet and outlet ports for coupling the plurality of tubes to the single tube at the approximate point that the refrigerant becomes wholly liquid, whereby refrigerant flows from the inlet port as a gas and as a two phase mixture primarily in plural paths and flows in liquid phase to the outlet port primarily in one path.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |