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US3783629A Expired / Lapsed US ⏱️ 0.0 years remaining

Refrigeration system

Assignee: Individual
•
Filing: 1972-09-13
•
Granted: 1974-01-08
•
Expires: 1992-09-13
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Abstract

Abstract A refrigeration system having a compressor and a condenser, a pipeline connected between the compressor and condenser and a filter-dryer heat exchanger connected to a high gas velocity ejector built into a pipeline between the compressor and condenser. This ejector is formed by a port through which passes refrigerant gas at high velocity. At the discharge end of this port a pipe of small diameter is inserted to the exact spot which will cause a suction to be drawn on it, thus creating the ejector effect. The suction on the small-diameter pipe causes hot refrigerant gas to be drawn from a hot gas discharge line through a filter-dryer heat exchanger of large size where the hot gas is filtered and cooled so it will change to a liquid in the small diameter pipe and be ejected back into the main hot gas line as a cool liquid refrigerant by the action of the ejector. The ejector is of large port design so as not to cause back pressure on the main refrigerant system.

Inventors

  • 👤 C Phillips

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 10:58
CPC Classifications
F; F25; F25B; F25B1/00; F25B43/00; F25B2341/00; F25B2341/001; F25B2341/0014

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 59 words
A refrigeration system comprising, in combination: a. a compressor; b. a heat exchanger; c. means connected to the compressor and heat exchanger for providing a refrigerant passage therebetween; d. means connected to the passage means for filtering a refrigerant passing between the compressor and heat exchanger; and e. an ejector for causing refrigerant to flow through the filtering means.
Claim 2
Dependent Claim 59 words
A refrigeration system comprising, in combination: a. a compressor; b. a heat exchanger; c. means connected to the compressor and heat exchanger for providing a refrigerant passage therebetween; d. means connected to the passage means for filtering a refrigerant passing between the compressor and heat exchanger; and e. an ejector for causing refrigerant to flow through the filtering means.
Claim 3
Dependent Claim 41 words
A structure as defined in claim 1, wherein a capillary tube is connected to said passage means between said heat exchanger and a port discharge of the ejector, and to the filtering means for controlling the fluid flow through the filter.
Claim 4
Dependent Claim 16 words
A structure as defined in claim 2, wherein the filtering means is a filter-dryer heat exchanger.
Claim 5
Dependent Claim 15 words
A structure as defined in claim 3, wherein said heat exchanger is a vapor condenser.
Claim 6
Dependent Claim 16 words
A structure as defined in claim 1, wherein the filtering means is a filter-dryer heat exchanger.
Claim 7
Dependent Claim 15 words
A structure as defined in claim 1, wherein said heat exchanger is a vapor condenser.
Claim 8
Independent Claim 63 words
A method for filtering, drying and liquefying a refrigerant, comprising the steps of: a. using a standard high velocity gas ejector between a compressor and a cooling heat exchanger; b. diverting hot refrigerant gas upstream from a port of the ejector to a filter-dryer heAt exchanger; and c. mixing fluid from the filter-dryer heat exchanger with undiverted refrigerant gas downstream of the ejector.
Claim 9
Independent Claim 63 words
A method for filtering, drying and liquefying a refrigerant, comprising the steps of: a. using a standard high velocity gas ejector between a compressor and a cooling heat exchanger; b. diverting hot refrigerant gas upstream from a port of the ejector to a filter-dryer heAt exchanger; and c. mixing fluid from the filter-dryer heat exchanger with undiverted refrigerant gas downstream of the ejector.

References Cited (Backward Citations)

US2119201A Cited
US2705405A Cited
US2767554A Cited
US3070977A Cited
US3175342A Cited
US3276216A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-07 1977-07-09 1978-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-07 1981-07-09 1982-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-07 1985-07-09 1986-01-08 $7700.00 Window Closed / Lapsed

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