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US 6,264,437 B1Granted
High pressure pump for all liquids
AssigneeHydro Rene Leduc
InventorLouis-Claude Porel
Life of this patent
Estimating the term…
Abstract
A device enables the pumping of any kind of liquid while giving the liquid very high delivery pressure. The units that cause pumped liquid suction and then its delivery are driven exclusively by hydraulic means excluding mechanical means. So that there is no material contact between the driving units and the pumped product and that the product cannot damage the mechanical driving units, the chamber receiving the hydraulic fluid is, at the end of each compression cycle, placed again in direct communication with the hydraulic fluid reservoir.
Claims25
A pump including a first hydraulic pump component in fluid communication with a second pump component,
- wherein the first hydraulic pump component comprises:
- a hydraulic fluid chamber,
- at least one piston in intermittent fluid communication with the hydraulic fluid chamber, the at least one piston being a tubular piston defining a piston chamber therein that receives hydraulic fluid from the hydraulic fluid chamber, the piston comprising (1) a piston head abutting the slanted plate via a sliding contact piece, wherein the sliding contact piece includes a bore therein in fluid communication with the piston chamber, and (2) a spring engaging the piston head,
- a slanted plate piston driving mechanism coupled with the at least one piston, the piston driving mechanism reciprocating the piston between a suction position and a delivery position, and the spring urging the piston toward the suction position, wherein the piston driving mechanism comprises a crescent opening therein in fluid communication with the hydraulic fluid chamber and in intermittent fluid communication with the piston chamber of the tubular piston when the driving mechanism reciprocates the piston from the delivery position toward the suction position;
- and
- wherein the second pump component comprises:
- at least one pump chamber, corresponding to the at least one piston, including a flexible diaphragm therein dividing the pump chamber into a pumping section and a delivery section, the pumping section of the pump chamber being in fluid communication with the piston chamber of the tubular piston such that the flexible diaphragm is reciprocated by displacement of hydraulic fluid by the first hydraulic pump and such that when the driving mechanism of the first hydraulic pump reciprocates the piston from the delivery position toward the suction position, the pumping section, the piston chamber and the hydraulic fluid chamber are in fluid communication with one another.
4 more elements
An internal combustion engine including fuel injectors receiving high pressure fuel from a pump including a first hydraulic pump component in fluid communication with a second pump component,
- wherein the first hydraulic pump component comprises:
- a hydraulic fluid chamber,
- at least one piston in intermittent fluid communication with the hydraulic fluid chamber, the at least one piston being a tubular piston defining a piston chamber therein that receives hydraulic fluid from the hydraulic fluid chamber, the piston comprising (1) a piston head abutting the slanted plate via a sliding contact piece, wherein the sliding contact piece includes a bore therein in fluid communication with the piston chamber, and (2) a spring engaging the piston head,
- a slanted plate piston driving mechanism coupled with the at least one piston, the piston driving mechanism reciprocating the piston between a suction position and a delivery position, and the spring urging the piston toward the suction position, wherein the piston driving mechanism comprises a crescent opening therein in fluid communication with the hydraulic fluid chamber and in intermittent fluid communication with the piston chamber of the tubular piston when the driving mechanism reciprocates the piston from the delivery position toward the suction position;
- and
- wherein the second pump component comprises:
- at least one pump chamber, corresponding to the at least one piston, including a flexible diaphragm therein dividing the pump chamber into a pumping section and a delivery section, the pumping section of the pump chamber being in fluid communication with the piston chamber of the tubular piston such that the flexible diaphragm is reciprocated by displacement of hydraulic fluid by the first hydraulic pump and such that when the driving mechanism of the first hydraulic pump reciprocates the piston from the delivery position toward the suction position, the pumping section, the piston chamber and the hydraulic fluid chamber are in fluid communication with one another.
4 more elements
Dependencies are inferred from the claim text.