Gear pump with ripple chamber for low noise and pressure ripples
AssigneeParker-Hannifin Corporation
InventorsJonathan Zhu, John Jones, Joseph Kovach, Chris Johnson
Life of this patent
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Abstract
A gear pump comprising a gear chamber having opposite side walls; a pair of gears disposed within the gear chamber with teeth thereof meshed with one another, the meshed teeth forming a trap region in which fluid becomes entrapped during rotation of the gears; inlet and outlet chambers on opposite sides of the meshed teeth of the gears and separated from one another by the meshed teeth of the gears; a ripple chamber; and a first passage connecting the ripple chamber to the trap region, whereby the trapped high pressure fluid will flow from the trap region to the ripple chamber to dampen the otherwise generated high pressure pulse.
Claims5
A gear pump comprising a gear chamber having opposite side walls;
- a pair of gears disposed within the gear chamber with teeth thereof meshed with one another, the meshed teeth forming a trap region in which fluid becomes entrapped during rotation of the gears;
- inlet and outlet chambers on opposite sides of the meshed teeth of the gears and separated from one another by the meshed teeth of the gears;
- a ripple chamber;
- and a first passage connecting the ripple chamber to the trap region, whereby the trapped high pressure fluid will flow from the trap region to the ripple chamber to dampen the otherwise generated high pressure pulse.
Dependencies are inferred from the claim text.