Swash-plate type compressor for air conditioning of vehicles

Claim 2

In a swash-plate compressor having a pair of horizontal axially aligned cylinder blocks forming a combined block, a swash-plate rotatably mounted between said cylinder blocks, and cylinder heads positioned at the ends of said combined block whereby the combined block defines an outer surface of the compressor, at least three bores axially extending through said cylinder blocks for slidably retaining compressor pistons, the bores thereby defining sectors in the blocks between adjacent bores; the improvement wherein said cylinder blocks are column shaped, comprising an axially extending lubricant reservoir in the lowermost of said sectors, suction and discharge chambers in said heads, axially extending suction and discharge refrigerant passageways formed in separate other of said sectors and connected to said suction and discharge chambers respectively, a partition positioned to divide said lubricant reservoir into a plurality of chambers, at least one conduit positioned to interconnect said divided chambers, one of said divided chambers enclosing a part of said swash-plate.

Claim 3

A swash-plate type compressor as claimed in claim 1 wherein said partition is axially elongated.

Claim 4

A swash-plate type compressor as claimed in claim 1 wherein said partition is a vertical partition.

Claim 5

In a swash-plate compressor having a pair of horizontal axially aligned cylinder blocks forming a combined block, a swash-plate rotatably mounted between said cylinder blocks, and cylinder heads positioned at the ends of said combined block whereby the combined block defines an outer surface of the compressor, at least three bores axially extending through said cylinder blocks for slidably retaining compressor pistons, the bores defining sectors in the blocks between adjacent bores; the improvement wherein said cylinder blocks are column shaped, comprising an axially extending lubricant reservoir in the lowermost of said sections, suction and discharge chambers in said heads, axially extending suction and discharge refrigerant passageways formed in separate other of said sectors and connected to said suction and discharge chambers respectively, said suction and discharge passageways being blocked at the junction of said cylinder blocks, and separate suction and discharge ports connected to said suction and discharge passageways respectively adjacent said junction of said cylinder blocks and extending to the exterior of said compressor.

Claim 6

In a swash-plate compressor having a pair of horizontal axially aligned cylinder blocks forming a combined block, a swash-plate rotatably mounted between said cylinder blocks, and cylinder heads positioned at the ends of said combined block whereby the combined block defines an outer surface of the compressor, at least three bores axially extending through said cylinder blocks for slidably retaining compressor pistons, the bores defining sectors in the blocks between adjacent bores; the improvement wherein said cylinder blocks are column shaped, comprising an axially extending lubricant reservoir in the lowermost of said sections, suction and discharge chambers in said heads, axially extending suction and discharge refrigerant passageways formed in separate other of said sectors and connected to said suction and discharge chambers respectively, said suction and discharge passageways being blocked at the junction of said cylinder blocks, and separate suction and discharge ports connected to said suction and discharge passageways respectively adjacent said junction of said cylinder blocks and extending to the exterior of said compressor.

Claim 7

A swash-plate type compressor as claimed in claim 4 comprising a suction flange having suction holes radially corresponding to said respective suction ports of said both cylinder blocks, and communicating with each other by a conduit of diameter B which runs concentrically with a conduit of diameter A communicating said one of suction holes for connection to a refrigerating circuit, said last mentioned conduits being in an axial alignment and the value of A is larger than the value of B, whereby the amount of sucked refrigerant from said circuit at both suction ports is equalized.

Claim 8

A swash-plate type compressor as claimed in claim 4 comprising a suction flange having suction holes radially corresponding to said respective suction ports of said both cylinder blocks, and first and second concentric conduits in said flange in communication with separate suction holes, said second conduit being adapted to be connected to a refrigerating circuit, both conduits being in axial alignment and the diameter of the latter being larger than that of the former.

Claim 9

In a swash-plate type compressor for air conditioning of vehicles, in which the compressor has a pair of horizontal axially aligned cylinder blocks forming a combined block, a swash-plate rotatably mounted between said cylinder blocks, three cylinder bores axially extending through said cylinder blocks for slidably retaining compressor pistons, and axially extending suction and discharge chambers formed between neighboring bores, whereby the cylinder blocks define an outer surface of the compressor; the improvement wherein said suction and discharge chambers are blocked in the vicinity of the junction of said cylinder blocks, and further comprising suction and discharge ports extending from exteriorly of said compressor to said suction and discharge chambers respectively adjacent the blocked ends of said chambers.

Claim 10

In a swash-plate type compressor for air conditioning of vehicles, in which the compressor has a pair of horizontal axially aligned cylinder blocks forming a combined block, a swash-plate rotatably mounted between said cylinder blocks, three cylinder bores axially extending through said cylinder blocks for slidably retaining compressor pistons, and axially extending suction and discharge chambers formed between neighboring bores, whereby the cylinder blocks define an outer surface of the compressor; the improvement wherein said suction and discharge chambers are blocked in the vicinity of the junction of said cylinder blocks, and further comprising suction and discharge ports extending from exteriorly of said compressor to said suction and discharge chambers respectively adjacent the blocked ends of said chambers.

Claim 11

A swash-plate type compressor as claimed in claim 7 wherein a lubricant reservoir is further provided between a pair of bores and said lubricant reservoir is divided into a plurality of chambers by means of a partition wall, said wall having at least one conduit communicating said chambers, one of said plurality of chambers enclosing a part of said swash-plate.