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US4523637A Expired / Lapsed US ⏱️ 0.0 years remaining

System for the refrigeration of liquids and/or gases

Assignee: Individual
•
Filing: 1981-11-25
•
Granted: 1985-06-18
•
Expires: 2001-11-25
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Abstract

Abstract The invention consists of a central tube (1) manufactured of high thermal conductivity materials in which a liquid or gas is made to pass at low temperature thus refrigerating other tubes (2) around its periphery also made of high conductivity materials which are in contact with the central tube. The system may be joined and insulated by an external tube (4) of insulating material and which forms a cold chamber (3) among the internal tube (1) and the peripherals (2) which assists the heat exchange. The number and the diameter of the peripheral tubes (2) for heat exchange is a function of the desired capacity and of the number of liquids and/or gases that it is desired to refrigerate at the same time. In order to further increase the efficiency of the system, the peripheral tubes (2) may be wound around the central tube (1), thereby increasing the total difference of the length between the tubes and the performance of the system. The system thus conceived may be maintained in a straight line or wound, permitting easy installation, low cost and manufacturing facility.

Inventors

  • 👤 Carlos A. D. Abramo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 18:10
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/06

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 134 words
Heat exchange system comprising a central internal tube through which a refrigerating medium passes, a plurality of external heat exchanger tubes completely surrounding the periphery of said central internal tube, each and every heat exchanger tube in surface to surface contact with the periphery of said central internal tube through which the medium to be refrigerated passes, each and every said heat exchanger tube in surface to surface contact with two adjacent ones of said heat exchanger tubes as well as in surface to surface contact with the periphery of said central internal tube and an outer insulating tube surrounding and engaging all said external heat exchanger tubes and maintaining them in contact with each other and in contact with said central internal tube thereby creating a cold chamber enclosing all of said tubes.
Claim 2
Dependent Claim 134 words
Heat exchange system comprising a central internal tube through which a refrigerating medium passes, a plurality of external heat exchanger tubes completely surrounding the periphery of said central internal tube, each and every heat exchanger tube in surface to surface contact with the periphery of said central internal tube through which the medium to be refrigerated passes, each and every said heat exchanger tube in surface to surface contact with two adjacent ones of said heat exchanger tubes as well as in surface to surface contact with the periphery of said central internal tube and an outer insulating tube surrounding and engaging all said external heat exchanger tubes and maintaining them in contact with each other and in contact with said central internal tube thereby creating a cold chamber enclosing all of said tubes.
Claim 3
Dependent Claim 22 words
A heat exchange system according to claim 1 wherein, said external heat exchanger tubes each contain the same medium to be cooled.
Claim 4
Dependent Claim 22 words
A heat exchange system according to claim 1 wherein, each said external heat exchanger tube contains a different medium to be cooled.
Claim 5
Dependent Claim 28 words
A heat exchange system according to claim 1 wherein, said external heat exchanger tubes are disposed with their axes parallel to the axis of said central internal tube.
Claim 6
Dependent Claim 22 words
A heat exchange system according to claim 1 wherein, said external heat exchanger tubes are disposed spirally around said central internal tube.
Claim 7
Dependent Claim 23 words
A heat exchanger system according to claim 1 wherein, said central internal tube and external heat exchanger tubes are of the same diameter.
Claim 8
Dependent Claim 23 words
A heat exchanger system according to claim 1 wherein, said external heat exchanger tubes are of smaller diameter than said central internal tube.

References Cited (Backward Citations)

US1544159A Cited
US2430774A Cited
US2576558A Cited
US2621903A Cited
US2578280A Cited
DE1116247B Cited
GB938372A Cited
US3269422A Cited
GB1427586A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-06-17 1988-12-17 1989-06-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-06-17 1992-12-17 1993-06-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-06-17 1996-12-17 1997-06-18 $7700.00 Window Closed / Lapsed

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