Patent US3779035A successfully refreshed from Google Patents.
US3779035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction accumulators for refrigeration systems
Assignee: Ardco Inc
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Filing: 1971-12-17
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Granted: 1973-12-18
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Expires: 1991-12-17
Abstract
Abstract In a suction accumulator for refrigeration systems, the improvement which comprises an external conduit for the flow of oil and of trapped liquid refrigerant which conduit passes in heat exchange relation with a heat storage means allowing the stored heat to be transferred to the liquid refrigerant and oil as it flows through the conduit.
Inventors
- 👤 D Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:16
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/006
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
152 words
An improvement in an accumulator for installation in the suction line of a refrigerating system, said accumulator having a tank with a top and bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube, having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line, whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet whose inlet is connected to the port and whose outlet is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a restriction in the metering tube and means for heating an unrestricted portion of the metering tube.
Claim 2
Dependent Claim
152 words
An improvement in an accumulator for installation in the suction line of a refrigerating system, said accumulator having a tank with a top and bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube, having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line, whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet whose inlet is connected to the port and whose outlet is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a restriction in the metering tube and means for heating an unrestricted portion of the metering tube.
Claim 3
Dependent Claim
17 words
An accumulator as in claim 1 where the restriction is near the outlet of the metering tube.
Claim 4
Dependent Claim
177 words
An improvement in an accumulatoR for installation in the suction line of a refrigerating system, said accumulator comprising a tank with a top and bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube, having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line, whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet whose inlet is connected to the port and whose outlet is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a heat storage in heat exchange relation to the oil metering tube for storing heat and transferring it to the metering tube and where the heat storage is a container of liquid and the metering tube only is immersed in the liquid.
Claim 5
Dependent Claim
177 words
An improvement in an accumulatoR for installation in the suction line of a refrigerating system, said accumulator comprising a tank with a top and bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube, having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line, whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet whose inlet is connected to the port and whose outlet is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a heat storage in heat exchange relation to the oil metering tube for storing heat and transferring it to the metering tube and where the heat storage is a container of liquid and the metering tube only is immersed in the liquid.
Claim 6
Dependent Claim
13 words
An accumulator as in claim 3 where the heat storage includes heating means.
Claim 7
Dependent Claim
15 words
An accumulator as in claim 3 where the tube has a portion of reduced diameter.
Claim 8
Dependent Claim
15 words
An accumulator as in claim 5 where the portion is adjacent the vapor outlet tube.
Claim 9
Dependent Claim
164 words
An improved refrigerating system comprising, in combination, conduit-connected compressor, condenser, receiver, expansion valve, evaporator and suction accumulator where the accumulator comprises a tank with a top and bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet where the inlet of the metering tube is connected to the port and the outlet of the metering tube is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a restriction in the metering tube and means for heating an unrestricted portion of the metering tube.
Claim 10
Dependent Claim
164 words
An improved refrigerating system comprising, in combination, conduit-connected compressor, condenser, receiver, expansion valve, evaporator and suction accumulator where the accumulator comprises a tank with a top and bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet where the inlet of the metering tube is connected to the port and the outlet of the metering tube is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a restriction in the metering tube and means for heating an unrestricted portion of the metering tube.
Claim 11
Dependent Claim
157 words
An improved refrigeration system which comprises, in combination, conduit-connected compressor, condenser, reciever, expansion valve, evaporator and a suction accumulator where the accumulator comprises a tank with a top and a bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line, whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet whose inlet is connected to the port and whose outlet is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a heat storage means containing liquid where the metering tube only is immersed in the liquid.
Claim 12
Dependent Claim
157 words
An improved refrigeration system which comprises, in combination, conduit-connected compressor, condenser, reciever, expansion valve, evaporator and a suction accumulator where the accumulator comprises a tank with a top and a bottom for separating liquid from vapor, an inlet to the tank for connection to the suction line for receiving suction vapor and liquid, a vapor outlet tube having an inlet and an outlet for receiving vapor from the tank and discharging it to the suction line, whose inlet is near the top of the tank and whose outlet is below the bottom of the tank, a port in the bottom of the tank and an oil metering tube with an inlet and an outlet whose inlet is connected to the port and whose outlet is connected to the vapor outlet tube at a point outside the tank wherein the improvement comprises a heat storage means containing liquid where the metering tube only is immersed in the liquid.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |