Variable-displacement swash plate type compressor
AssigneeValeo Japan Co., Ltd.
InventorYujiro Morita
Life of this patent
Estimating the term…
Abstract
A first bleeding passage 50 configured to allow a crank chamber 2 and a suction chamber 31 to constantly communicate with each other, and a second bleeding passage 60 configured to allow the crank chamber 2 and the suction chamber 31 to constantly communicate with each other are provided. The first bleeding passage 50 is made to communicate with the crank chamber 2 at least via a space (central hole space 54) defined by an insertion end portion of a shaft 7 in a central hole 12 that is formed in the center of a cylinder block 1 and into which the shaft 7 is inserted. The second bleeding passage 60 is opened in an end surface 1a of the cylinder block 1 that is opposed to a swash plate 19.
Claims8
A variable-displacement swash plate type compressor comprising:
- a cylinder block in which plural cylinder bores are formed;
- a front housing assembled with a front side of the cylinder block and defining a crank chamber;
- a rear housing that is attached to a rear side of the cylinder block and in which a suction chamber and a discharge chamber are formed;
- a shaft supported in a rotatable manner by the front housing and a central hole formed in a center of the cylinder block;
- a swash plate configured to rotate integrally with the shaft and attached at a variable inclination angle with respect to the shaft;
- pistons that are disposed in the plural cylinder bores disposed around the central hole of the cylinder block and that are configured to reciprocate by rotation of the swash plate;
- an intake passage configured to allow the discharge chamber and the crank chamber to communicate with each other;
- a pressure control valve disposed in the intake passage and configured to adjust an opening degree of the intake passage;
- a first bleeding passage configured to allow the crank chamber and the suction chamber to constantly communicate with each other;
- and
- a second bleeding passage configured to allow the crank chamber and the suction chamber to constantly communicate with each other,
- wherein the first bleeding passage is configured to communicate with the crank chamber at least via a space defined by an insertion end portion of the shaft in the central hole, and
- wherein the second bleeding passage is opened in an end surface of the cylinder block at a position that is opposed to the swash plate with respect to an axial direction defined by the shaft,
- wherein the second bleeding passage comprises an axial end and an oblique end, where the axial end has a larger diameter than a diameter of the oblique end, positioned to couple together,
- wherein the oblique end is positioned towards the swash plate and the axial end is positioned away from the swash plate, and
- wherein the axial end comprises a filter.
Dependencies are inferred from the claim text.