US4601179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dryer for a refrigeration plant
Assignee: Danfoss AS
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Filing: 1985-07-05
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Granted: 1986-07-22
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Expires: 2005-07-05
Abstract
Abstract The invention relates to a dryer unit for an encapsulated refrigerant compressor unit. The capsule of the compressor unit has suction and compression nipples and an auxiliary nipple. A dead end housing unit containing a drying agent is connected to the auxiliary nipple.
Inventors
- 👤 Gustav A. Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
B; B01; B01D; B01D15/00; F; F25; F25B; F25B43/00; F25B43/003; Y; Y10; Y10S; Y10S210/00; Y10S210/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
An encapsulated refrigerant compressor unit, comprising, a capsule casing for housing a compressor, suction and compression nipples and an auxiliary nipple for providing fluid communication between the interior and exterior of said casing each connected separately to said capsule casing, a flow through housing unit having an inner end thereof connected to said auxiliary nipple, a drying agent in said housing unit, and means for selectively opening and closing the outer end of said flow through housing to permit adding a refrigerant therethrough to the interior of said capsule casing.
Claim 2
Dependent Claim
90 words
An encapsulated refrigerant compressor unit, comprising, a capsule casing for housing a compressor, suction and compression nipples and an auxiliary nipple for providing fluid communication between the interior and exterior of said casing each connected separately to said capsule casing, a flow through housing unit having an inner end thereof connected to said auxiliary nipple, a drying agent in said housing unit, and means for selectively opening and closing the outer end of said flow through housing to permit adding a refrigerant therethrough to the interior of said capsule casing.
Claim 3
Dependent Claim
25 words
A unit according to claim 1 including a dead end tube connected to said housing unit at the opposite end thereof from said auxiliary nipple.
Claim 4
Dependent Claim
17 words
A unit according to claim 2 wherein said dead end tube is also a refrigerant filling tube.
Claim 5
Dependent Claim
27 words
A unit according to claim 2 characterized in that said housing unit and said dead end tube and said auxiliary nipple are made in a single piece.
Claim 6
Dependent Claim
23 words
A unit according to claim 1 characterized in that said housing unit has a connecting end which is pushed over said auxiliary nipple.
Claim 7
Dependent Claim
24 words
A unit according to claim 1 characterized in that said housing unit contains a cross-sectional constriction between said auxiliary nipple and said drying agent.
Claim 8
Dependent Claim
29 words
A unit according to claim 6 characterized in that said housing unit is sleeve-shaped and said constriction is formed by a depression in the wall of said housing unit.
Claim 9
Dependent Claim
33 words
A unit according to claim 6 characterized in that said drying agent consists of loosely filled particles and the internal width of said constriction is less than the smallest dimension of said particles.
Claim 10
Dependent Claim
29 words
A unit according to claim 8 characterized in that said internal width of said constriction is smaller than the smallest dimension of particles rubbed off said drying agent particles.
Claim 11
Dependent Claim
27 words
A unit according to claim 1 characterized in that at least a part of said housing unit containing said drying agent is disposed below said auxiliary nipple.
Claim 12
Dependent Claim
26 words
A unit according to claim 1 characterized in that at least the part of said housing unit containing said drying agent has a substantially vertical axis.
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) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |