Heat exchanger with rolled-in capillary for refrigeration apparatus
Abstract
Abstract A FLUID FLOW STRUCTURE WHEREIN A FIRST FLUID FLOW DUCT IS PROVIDED WITH AN EXTERNAL, OUTWARDLY OPENING GROOVE. THE GROOVE IS COVERED BY AN OUTER ELEMENT WHICH, IN THE ILLUSTRATED EMBODIMENT, COMPRISES AN OUTER TUBE. THE GROOVE IS MADE TO BE SMALL IN CROSS-SECTION SO AS TO DEFINE A CAPILLARY RESTRICTOR RELATIVE TO FLUID FLOW THERETHROUGH. THE RESTRICTION OF FLOW IS ADJUSTED BY SUITABLY DEFORMING THE OUTER TUBE OVERLYING THE GROOVE SO AS TO ADJUSTABLY DECREASE THE CROSS-SECTION OF THE CAPILLARY RESTRICTOR PASSAGE. THE FLUID FLOW STRUCTURE MAY BE USED IN A REFRIGERATION SYSTEM FOR PROVIDING HEAT EXCHANGE BETWEEN REFRIGERANT FLUID DELIVERED FROM THE EVAPORATOR THROUGH THE FIRST TUBE AND REFRIGERANT FLUID DELIVERED FROM A CONDENSER TO THE EVAPORATOR THROUGH THE CAPILLARY PASSAGE.
Inventors
- 👤 John Roeder Jr
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |