Bleed valve apparatus
AssigneeDenso Corporation
InventorAkinori Hirano
Life of this patent
Estimating the term…
Abstract
A bleed valve apparatus includes a valve body having a sliding hole in which a spool is axially movable. A seat member and the spool define a bleed chamber. An open-close unit opens and doses a bleed port of the seat member to control exhaust of fluid from the bleed chamber through the bleed port. The spool has a spool end surface at the side of the seat member. The spool end surface and a seated surface of the seat member are inclined with respect to each other to therebetween define an inclination clearance, which communicates a supply port with the bleed chamber to supply fluid to the bleed chamber through the supply port when the spool is seated to the seated surface.
Claims9
A bleed valve apparatus comprising:
- a valve body having a sliding hole, which axially extends;
- a spool axially movable in the sliding hole;
- a seat member having a bleed port, the seat member and the spool defining a bleed chamber;
- and
- an open-close unit configured to open and close the bleed port to control communication between the bleed chamber and a low-pressure component through the bleed port,
- wherein the spool has a spool end surface, which is located at the side of the seat member,
- the seat member has a seated surface, to which the spool is configured to be seated,
- the spool is configured to substantially blockade a supply port, which is for supplying fluid to the bleed chamber from the bleed chamber by being seated to the seat member, and
- the spool end surface of the spool and the seated surface of the seat member are inclined with respect to each other to therebetween define an inclination clearance, which is configured to communicate the supply port with the bleed chamber when the spool is seated to the seat member.
Dependencies are inferred from the claim text.