Multichambered pump for a vapor compression refrigeration system

Details Multichambered pump for a vapor compression refrigeration system Multichambered pump for a vapor compression refrigeration system

1993-11-22

1998-02-24

Wayner, William E.

Refrigeration

Processes

Compressing, condensing and evaporating

622384, 60676, 417389, F25B 2700, F01K 1300

Patent

active

057201773

ABSTRACT:
A device and method of operating a diaphragm pump having at least three chambers is used in a vapor compression refrigeration system. Each chamber contains a fluid having a different set of pressure and temperature characteristics. Adjacent chambers are separated by movable barriers, such as flexible diaphragms or pistons, that are sequentially moved by pressure changes resulting from heating and cooling the fluids. The fluids are chosen so that driving fluids operate in a substantially narrower temperature range than a working fluid but have the same operating pressure range permitting use of a thermal energy source having a selected temperature to power the pump. Optimal selection of both driving fluids and the working fluid permits use of a low grade heat source for thermal energy.

REFERENCES:
patent: 2328462 (1943-08-01), Killeffer
patent: 3699779 (1972-10-01), Schlichtig
patent: 3763663 (1973-10-01), Schlichtig
patent: 4418547 (1983-12-01), Clark, Jr.
patent: 4429540 (1984-02-01), Burnham
patent: 4438633 (1984-03-01), Hiser
patent: 4450690 (1984-05-01), Clark, Jr.
patent: 4537036 (1985-08-01), Clark, III
patent: 4537037 (1985-08-01), Clark, Jr.
patent: 4850199 (1989-07-01), DiNovo et al.
patent: 5114318 (1992-05-01), Freeborn

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