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US 12,372,075 B2Granted
Valve plate with notch arrangement for fluid pump
AssigneeDanfoss Power Solutions II Technology A/S
InventorsKashyap Suraj Raktim, Ghambir Shivank, Salutagi Shivayogi Sidram, Hande Nitin
Life of this patent
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Abstract
A valve plate for a fluid pump includes a body having a first surface and an oppositely disposed second surface. The body defines a first kidney slot that extends through the first and second surfaces and a second kidney slot that extends through the first and second surfaces. A first notch is disposed in the first surface of the body and extends outwardly from the first kidney slot in a direction toward the second kidney slot. A second notch is disposed in the first surface and extends outwardly from the first kidney slot in a direction toward the second kidney slot. The second notch is separated from the first notch.
Claims27
A valve plate of a fluid pump comprising:
- a body having a first surface and an oppositely disposed second surface, the body defining:
- a first kidney slot extending through the first and second surfaces;
- a second kidney slot extending through the first and second surfaces;
- and a plurality of notches including:
- a first notch disposed in the first surface of the body, the first notch contacting the first kidney slot and extending outwardly from the first kidney slot in a direction toward the second kidney slot, the first notch having a first notch distal end;
- and
- a second notch disposed in the first surface extending outwardly from the first kidney slot in a direction toward the second kidney slot, the second notch having a second notch distal end, wherein the second notch is separated from the first notch;
- wherein the first notch is disposed the most radially outward of the plurality of notches with respect to a central axis of the valve plate;
- and
- wherein a radial extending from the central axis of the valve plate and aligned with the first notch distal end is closer to a radial extending from the central axis of the valve plate and aligned with an end of the second kidney slot than a radial extending from the central axis of the valve plate and aligned with the second notch distal end.
7 more elements
A fluid pump comprising:
- a barrel defining a plurality of cylinder bores and a plurality of fluid passages in fluid communication with the plurality of cylinder bores;
- a plurality of pistons disposed in the plurality of cylinder bores, the pistons being adapted to reciprocate in the cylinder bores;
- a valve plate in fluid communication with the barrel, the valve plate including:
- a body defining:
- a first kidney slot having a first end and a second end;
- a second kidney slot having a first end and a second end, the second kidney slot being disposed in the body so that the second end of the second kidney slot is adjacent to the first end of the first kidney slot;
- and
- a plurality of notches including:
- a first notch contacting the first kidney slot and extending outwardly from the first end of the first kidney slot;
- and
- a second notch extending outwardly from the first end of the first kidney slot, the first notch being separated from the second notch, wherein a length of the first notch is greater than a length of the second notch;
- wherein the first notch is disposed the most radially outward of the plurality of notches with respect to a central axis of the valve plate;
- wherein the first notch and the second notch are configured such that the first notch comes into fluid communication with a first fluid passage of the plurality of fluid passages prior to the second notch coming into fluid communication with the first fluid passage.
10 more elements
A fluid pump comprising:
- a barrel defining a plurality of cylinder bores and a plurality of fluid passages in fluid communication with the plurality of cylinder bores;
- a plurality of pistons disposed in the plurality of cylinder bores, the pistons being adapted to reciprocate in the cylinder bores;
- a valve plate in fluid communication with the barrel, the valve plate including:
- a first kidney slot in intermittent fluid communication with the plurality of fluid passages;
- a second kidney slot in intermittent fluid communication with the plurality of fluid passages;
- a transition land disposed between the first and second kidney slots;
- and
- a plurality of notches including:
- a first notch contacting the first kidney slot and extending outwardly from the first kidney slot into the transition land;
- and
- a second notch extending outwardly from the first kidney slot into the transition land, the second notch being separated from the first notch;
- wherein the first notch is disposed the most radially outward of the plurality of notches with respect to a central axis of the valve plate;
- and
- wherein the first notch and the second notch are configured such that the first notch comes into fluid communication with a first fluid passage of the plurality of fluid passages prior to the second notch coming into fluid communication with the first fluid passage.
11 more elements
Dependencies are inferred from the claim text.