US 4,790,727 AGranted

Swashplate compressor for air conditioning systems

AssigneeFord Motor Company

InventorDuane F. Steele

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Abstract

A swashplate air conditioning compressor comprising a two-part compressor housing with a generally cylindrical region and integral end plates, a pair of cylinder blocks disposed in said cylindrical region and defining axially disposed cylinder openings, a centrally disposed swashplate and shaft assembly within the cylinder blocks, and cast refrigerant intake and discharge passages in each end plate that cooperate with valve plate assemblies between the cylinder heads and the end plates.

Claims9

Dependent claims

An air conditioning compressor comprising:

two generally cylindrical housing portions, one end of each housing portion being open and having an end wall closing the other end;
the open ends of said housing portions being assembled in end-to-end relationship thus defining an internal cylindrical cavity;
a pair of cylinder blocks in said cavity disposed in juxtaposed relationship, each cylinder block having a plurality of axially disposed cylinder openings arranged in angularly spaced relationship about the axis of said cavity, each cylinder opening in one cylinder block being aligned with an opening in the other cylinder block, a plurality of double acting pistons each having one end thereof received in the corresponding cylinder opening of said one cylinder block and the opposite end received in the aligned cylinder opening of said other cylinder block whereby said double acting pistons align said cylinder blocks with respect to each other;
the end wall of each housing portion being formed with refrigerant pressure discharge and supply cavities forming refrigerant flow passages;
each said piston being axially movable with reciprocating motion in its cylinder, sliding slipper bearings on each said piston;
a swashplate and driveshaft assembly journalled in said cylinder blocks including a swashplate disposed in a plane forming an angle relating to the axis of said cylinder blocks, the swashplate being slidably engaged by said slipper bearings whereby said pistons are reciprocated when said swashplate and driveshaft assembly is rotated;
a valve assembly disposed adjacent each of said end walls whereby refrigerant is distributed therethrough from said supply cavity and to said cylindrical openings and from said cylindrical openings to said pressure discharge cavity from said cylindrical openings;
and
each cylinder block being formed with axial refrigerant supply passages that communicate with the supply cavities in said end walls, and a refrigerant supply passage including an inlet port in one of said housing portions and a through passage in each cylinder block that distributes refrigerant from said inlet port to the region of said swashplate whereby said refrigerant supply passages are supplied with refrigerant with a relative uniform distribution of refrigerant.

6 more elements

Dependencies are inferred from the claim text.

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Abstract

An air conditioning compressor comprising:

two generally cylindrical housing portions, one end of each housing portion being open and having an end wall closing the other end;
the open ends of said housing portions being assembled in end-to-end relationship thus defining an internal cylindrical cavity;
a pair of cylinder blocks in said cavity disposed in juxtaposed relationship, each cylinder block having a plurality of axially disposed cylinder openings arranged in angularly spaced relationship about the axis of said cavity, each cylinder opening in one cylinder block being aligned with an opening in the other cylinder block, a plurality of double acting pistons each having one end thereof received in the corresponding cylinder opening of said one cylinder block and the opposite end received in the aligned cylinder opening of said other cylinder block whereby said double acting pistons align said cylinder blocks with respect to each other;
the end wall of each housing portion being formed with refrigerant pressure discharge and supply cavities forming refrigerant flow passages;
each said piston being axially movable with reciprocating motion in its cylinder, sliding slipper bearings on each said piston;
a swashplate and driveshaft assembly journalled in said cylinder blocks including a swashplate disposed in a plane forming an angle relating to the axis of said cylinder blocks, the swashplate being slidably engaged by said slipper bearings whereby said pistons are reciprocated when said swashplate and driveshaft assembly is rotated;
a valve assembly disposed adjacent each of said end walls whereby refrigerant is distributed therethrough from said supply cavity and to said cylindrical openings and from said cylindrical openings to said pressure discharge cavity from said cylindrical openings;
and
each cylinder block being formed with axial refrigerant supply passages that communicate with the supply cavities in said end walls, and a refrigerant supply passage including an inlet port in one of said housing portions and a through passage in each cylinder block that distributes refrigerant from said inlet port to the region of said swashplate whereby said refrigerant supply passages are supplied with refrigerant with a relative uniform distribution of refrigerant.

6 more elements