Hydraulic pressure intensifier
AssigneePistonpower Aps
InventorsJorgen P. Todsen, Jorgen Mads Clausen, Tom Tychsen
Life of this patent
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Abstract
A hydraulic pressure intensifier (1) is described comprising a housing (2) having a low pressure chamber (3) and a high pressure chamber (4), force transmitting means (5) between the low pressure chamber (3) and the high pressure chamber (4), and a switching valve (8) connecting the low pressure chamber (3) to a first pressure or to a second pressure different from the first pressure. It is intended to have a large volume on the high pressure side of the pressure intensifier. To this end the switching valve (8) is controlled by a pilot valve 18.
Claims21
A hydraulic pressure intensifier comprising a housing having a low pressure chamber and a high pressure chamber, force transmitting means between the low pressure chamber and the high pressure chamber, and a switching valve connecting the low pressure chamber to a first pressure or to a second pressure different from the first pressure, wherein the switching valve is controlled by a pilot valve, wherein the switching valve comprises a valve element having a first control pressure area and a second control pressure area, wherein the pilot valve controls a pressure difference between the first control pressure area and the second control pressure area, wherein the valve element comprises a flange extending radially, wherein the control pressure areas are located on opposite faces of the flange, and wherein the valve element in a first position connects the low pressure chamber to the first pressure and not to the second pressure, and in a second position connects the low pressure chamber to the second pressure and not to the first pressure.
A hydraulic pressure intensifier comprising a housing having a low pressure chamber and a high pressure chamber, force transmitting means between the low pressure chamber and the high pressure chamber, and a switching valve connecting the low pressure chamber to a first pressure or to a second pressure different from the first pressure, wherein the switching valve is controlled by a pilot valve, wherein the switching valve comprises a valve element having a first control pressure area and a second control pressure area, wherein the pilot valve controls a pressure difference between the first control pressure area and the second control pressure area, wherein the housing comprises control channels for supplying pilot pressure to the control pressure areas and supply channels for supplying pressure to the low pressure chamber, wherein the control channels have a smaller cross sectional area than the supply channels.
A hydraulic pressure intensifier comprising a housing having a low pressure chamber and a high pressure chamber, a piston extending between the low pressure chamber and the high pressure chamber, and a switching valve connecting the low pressure chamber to a first pressure or to a second pressure different from the first pressure, wherein the switching valve is controlled by a pilot valve, wherein the switching valve comprises a valve element having a first control pressure area and a second control pressure area, wherein the pilot valve controls a pressure difference between the first control pressure area and the second control pressure area, wherein the housing comprises control channels for supplying pilot pressure to the control pressure areas and supply channels for supplying pressure to the low pressure chamber, and
- wherein hydraulic pressure in the low pressure chamber acts directly on the piston to drive the piston, and wherein the valve element does not contact the piston.
Dependencies are inferred from the claim text.