US3792594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction line accumulator
Assignee: Ardco Inc
•
Filing: 1971-09-20
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Granted: 1974-02-19
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Expires: 1991-09-20
Abstract
Abstract A refrigerant accumulator in the suction line of a closed refrigeration system, provided with a controllably heated metering tube between the bottom of the accumulator and a downstream point in the suction line, to ensure at least adequate re-evaporation of the refrigerant, to eliminate slugging and to return oil to the compressor, particularly during the hot gas defrosting portion of the refrigeration cycle, the heating being effected electrically or by means of hot gas from the compressor.
Inventors
- 👤 D Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:59
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/006; F25B47/00; F25B47/02; F25B47/022
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
An accumulator for a refrigeration system comprising a tank, an inlet connection, an outlet connection extending below the tank, a conduit mechanically coupled to the bottom of the tank and the outlet connection, extending only underneath the tank, constituting a trap which has a first leg, descending from the tank, a second leg rising to the outlet connection, heating means thermally connected to said first leg, and separated heating means thermally connected to said second leg.
Claim 2
Dependent Claim
76 words
An accumulator for a refrigeration system comprising a tank, an inlet connection, an outlet connection extending below the tank, a conduit mechanically coupled to the bottom of the tank and the outlet connection, extending only underneath the tank, constituting a trap which has a first leg, descending from the tank, a second leg rising to the outlet connection, heating means thermally connected to said first leg, and separated heating means thermally connected to said second leg.
Claim 3
Dependent Claim
66 words
An accumulator for a refrigeration system comprising a tank, an inlet connection, an outlet connection extending below the tank, a conduit mechanically coupled to the bottom of the tank and said outlet connection and extending only underneath said tank, and a heater thermally connected to said conduit, the outlet of the said conduit extending into said outlet connection and being provided with an opening facing upstream.
Claim 4
Dependent Claim
66 words
An accumulator for a refrigeration system comprising a tank, an inlet connection, an outlet connection extending below the tank, a conduit mechanically coupled to the bottom of the tank and said outlet connection and extending only underneath said tank, and a heater thermally connected to said conduit, the outlet of the said conduit extending into said outlet connection and being provided with an opening facing upstream.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |