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US 11,767,840 B2Granted
Diaphragm pump
AssigneeIngersoll-Rand Industrial U.S., Inc.
InventorsDaniel Brocker, Mark Anthony Ezzo, James Gregory Simmons, Jeremy S. Ferden
Life of this patent
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Abstract
A diaphragm structured for use in a diaphragm pump useful to pump a working fluid includes a first non-planar layer and a second non-planar layer. The second non-planar layer is independent from the first non-planar layer, but engaged to the first non-planar layer so that the first non-planar layer and the second non-planar layer form a closed space therebetween and travel together while flexing in an intake direction or a discharge direction within a pumping assembly of a diaphragm pump.
Claims20
A diaphragm pump comprising:
- an inlet structured to receive a fluid;
- an outlet structured to convey the fluid discharged by the diaphragm pump;
- a pumping assembly disposed between the inlet and the outlet;
- and
- a split-layer diaphragm disposed within the pumping assembly and comprised of two or more unbonded, non-planar diaphragm layers that each extend radially from an inner section of the split-layer diaphragm to an exterior section of the split-layer diaphragm and travel together, the two or more unbonded, non-planar diaphragm layers comprising a first sealing feature protruding from the exterior section of the split-layer diaphragm, and a second sealing feature protruding from one of the two or more unbonded, non-planar diaphragm layers at the inner section of the split-layer diaphragm and pressing into an other of the two or more unbonded, non-planar diaphragm layers at the inner section of the split-layer diaphragm, wherein opposing faces of the two or more unbonded, non-planar diaphragm layers, the first sealing feature, and the second sealing feature form a sealed, fixed volume of closed space entirely within the split-layer diaphragm, and wherein the split-layer diaphragm is configured to flex in an intake direction to draw a working fluid into a pumping chamber defined by the split-layer diaphragm within the pumping assembly, and to flex in a discharge direction to expel the working fluid from the pumping chamber,
- wherein the closed space is free of lubricant and communicates pressure between the two or more unbonded, non-planar diaphragm layers so that the two or more unbonded, non-planar diaphragm layers travel together when the split-layer diaphragm flexes in the intake direction or the discharge direction, and
- wherein each diaphragm layer of the split-layer diaphragm comprises an inwardly cupping, annular convolute extending towards the intake direction, and the annular convolutes conform to one another to render the split-layer diaphragm non-planar and suitable for mechanical actuations.
4 more elements
A diaphragm structured for use in a diaphragm pump useful to pump a working fluid comprising:
- a first non-planar layer extending radially from a first inner section to a first exterior section, the first non-planar layer defining a first inwardly cupping, annular convolute extending toward a first direction that corresponds to an intake direction for the diaphragm;
- a second non-planar layer extending radially from a second inner section to a second exterior section, the second non-planar layer defining a second inwardly cupping, annular convolute extending toward the first direction and conforming to the first inwardly cupping, annular convolute;
- a first sealing feature protruding from one of the first exterior section and the second exterior section;
- and
- a second sealing feature protruding form one of the first inner section and the second inner section and configured to press into an other of the first inner section and the second inner section;
- wherein the second non-planar layer is independent from the first non-planar layer, but engaged to the first non-planar layer via the first sealing feature and the second sealing feature so that the first non-planar layer and the second non-planar layer form a sealed, fixed volume of closed space that is free of lubricant entirely within the diaphragm, and the closed space communicates pressure between the first non-planar layer and the second non-planar layer so that the first non-planar layer and the second non-planar layer travel together while flexing in the intake direction or a discharge direction within a pumping assembly.
3 more elements
Dependencies are inferred from the claim text.