Patent US4242885A successfully refreshed from Google Patents.
US4242885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for a refrigeration circuit
Assignee: Linde GmbH
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Filing: 1978-12-18
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Granted: 1981-01-06
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Expires: 1998-12-18
Abstract
Abstract An ejector is used in place of a compressor with moving parts in the refrigeration apparatus. The ejector has an intake side connected to the gas space of a liquefied gas tank, a propellant jet input connected to a delivery side of the compressor to receive a high pressure flow of gas and a delivery side in the form of a diffusor output connected to the intake side of the compressor. A pair of ejectors can be connected in series or, where more than two liquefied gas tanks are used, in parallel.
Inventors
- 👤 Hans Quack
- 👤 Armin E. Senn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:54
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/003; F25J1/0032; F25J1/004; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F25J1/0002; F25J1/0005; F25J1/0007; F25J1/0047; F25J1/0052; F25J1/006; F25J1/0062; F25J1/0065; F25B; F25B2341/00; F25B2341/001; F25B2341/0012; F25B2341/0015; F25J2240/00; F25J2240/60; F25J2270/00; F25J2270/90; F25J2270/912; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/888; Y10S505/894
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
Apparatus for a refrigeration circuit comprising a compressor for compressing a gas, said compressor having an intake side for receiving gas and a delivery side for expelling compressed gas; an after-cooler downstream of said compressor for cooling the compressed gas; cooling means downstream of said after-cooler for at least partially liquefying the compressed gas; a pair of tanks connected in series to said cooling means to receive the at least partially liquefied compressed gas, a first one of said tanks having a gas space connected to said intake of said compressor to recycle gas thereto; and an ejector having an intake side connected to a gas space of the other of said tanks to receive gas therefrom, a propellant jet input connected to said delivery side of said compressor and a delivery side connected to said intake side of said compressor.
Claim 2
Dependent Claim
141 words
Apparatus for a refrigeration circuit comprising a compressor for compressing a gas, said compressor having an intake side for receiving gas and a delivery side for expelling compressed gas; an after-cooler downstream of said compressor for cooling the compressed gas; cooling means downstream of said after-cooler for at least partially liquefying the compressed gas; a pair of tanks connected in series to said cooling means to receive the at least partially liquefied compressed gas, a first one of said tanks having a gas space connected to said intake of said compressor to recycle gas thereto; and an ejector having an intake side connected to a gas space of the other of said tanks to receive gas therefrom, a propellant jet input connected to said delivery side of said compressor and a delivery side connected to said intake side of said compressor.
Claim 3
Dependent Claim
26 words
An apparatus as set forth in claim 1 wherein said propellant jet input is connected to said delivery side of said compressor downstream of said after-cooler.
Claim 4
Dependent Claim
26 words
An apparatus as set forth in claim 1 wherein said propellant jet input is connected to said delivery side of said compressor upstream of said after-cooler.
Claim 5
Dependent Claim
62 words
An apparatus as set forth in claim 1 which further comprises a second ejector connected in series with said first ejector, said second ejector having an intake side connected to said gas space of said other tank, a propellant jet input connected to said delivery side of said compressor and a delivery side connected to said intake side of said first ejector.
Claim 6
Dependent Claim
17 words
An apparatus as set forth in claim 1 which further comprises a vacuum tank housing said ejector.
Claim 7
Dependent Claim
22 words
An apparatus as set forth in claim 5 wherein said vacuum tank forms part of a cold box housing said cooling means.
Claim 8
Dependent Claim
40 words
An apparatus as set forth in claim 1 wherein said cooling means includes a second ejector for expanding a flow of gas passing therethrough said second ejector having an intake side connected to said gas space of said second tank.
Claim 9
Dependent Claim
73 words
An apparatus as set forth in claim 1 which further comprises a third tank connected in series with said pair of tanks, and a second ejector connected in parallel with said first ejector, said second ejector having an intake side connected to a gas space of said third tank, a propellant jet input connected to said delivery side of said compressor and a delivery side connected to said intake side of said compressor.
References Cited (Backward Citations)
US3159008A
Cited
US3427817A
Cited
US3447339A
Cited
US3434298A
Cited
US3442093A
Cited
US3456456A
Cited
US3464230A
Cited
US3496735A
Cited
US3932158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |