US3710585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing moisture from a refrigeration system
Assignee: York International Corp
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Filing: 1971-04-07
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Granted: 1973-01-16
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Expires: 1991-04-07
Abstract
Abstract An improved method and apparatus for purging moisture from a refrigeration system includes means for withdrawing a mixture of refrigerant vapor and moisture from the system, removing moisture from this mixed stream and then reintroducing the dried vapor into said evaporator, all of said operation taking place during a normal shutdown period of said system.
Inventors
- 👤 W Dillenbeck
- 👤 P Muench
- 👤 E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:48
CPC Classifications
F; F25; F25B; F25B47/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
48 words
In a refrigeration system of the closed circuit, vapor cycle type, the improvement comprising refrigerant drier means; and means for circulating a stream of refrigerant vapor and moisture through said drier means from the vapor space of said system during periods when the system is not in operation.
Claim 2
Dependent Claim
48 words
In a refrigeration system of the closed circuit, vapor cycle type, the improvement comprising refrigerant drier means; and means for circulating a stream of refrigerant vapor and moisture through said drier means from the vapor space of said system during periods when the system is not in operation.
Claim 3
Dependent Claim
47 words
Apparatus as defined in claim 1 wherein said means for circulating said stream includes conduit means connecting said system and said refrigerant drier means in a closed circuit fluid path, and a heater element adapted to induce circulation of vapor through said conduit means and said drier.
Claim 4
Dependent Claim
20 words
Apparatus as defined in claim 1 wherein said means for circulating said stream includes a blower in said conduit means.
Claim 5
Independent Claim
83 words
A method of removing moisture from a refrigeration system of the type utilizing a flooded evaporator including an evaporator shell, a tube bundle in said shell, and a body of refrigerant therein, the refrigerant level being below the upper portion of said shell; the steps which include withdrawing a stream of refrigerant vapor and moisture only during periods when said system is not in operation, removing moisture from said vapor and moisture stream and returning the dried refrigerant vapor to the evaporator shell.
Claim 6
Independent Claim
83 words
A method of removing moisture from a refrigeration system of the type utilizing a flooded evaporator including an evaporator shell, a tube bundle in said shell, and a body of refrigerant therein, the refrigerant level being below the upper portion of said shell; the steps which include withdrawing a stream of refrigerant vapor and moisture only during periods when said system is not in operation, removing moisture from said vapor and moisture stream and returning the dried refrigerant vapor to the evaporator shell.
Claim 7
Independent Claim
60 words
A method of removing moisture from a refrigeration system of the type utilizing a shell and tube condenser, the steps which include withdrawing a stream of refrigerant vapor and moisture from said condenser only during periods when said system is not in operation, removing moisture from said vapor and moisture stream and returning the dried refrigerant vapor to said condenser.
Claim 8
Independent Claim
60 words
A method of removing moisture from a refrigeration system of the type utilizing a shell and tube condenser, the steps which include withdrawing a stream of refrigerant vapor and moisture from said condenser only during periods when said system is not in operation, removing moisture from said vapor and moisture stream and returning the dried refrigerant vapor to said condenser.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |