Integral suction system

Claim 2

In a hermetic reciprocating piston compressor including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a rotor and a stator, and a cylinder in said cylinder block having a piston therein that reciprocates in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinder, aid cylinder head having walls defining a closed discharge chamber in fluid communication with the cylinder and a discharge port in fluid communication with said discharge chamber, a cylinder suction opening axially outwardly disposed of the cylinder; motor cooling means for cooling the motor by flowing refrigerant through said motor; a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including a conduit extending transverse to the axial direction of said cylinder, a first adjutage extending transverse to said conduit and extending through said cylinder suction opening, a motor flowthrough opening communicating with said internal low pressure cavity and adapted to receive refrigerant from said motor cooling means, said first adjutage extending substantially to said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the cylinder.

Claim 3

The gas flow system of claim 1, wherein said motor cooling means comprises: a suction passage formed in said cylinder block adjacent the stator, said suction passage in fluid communication with said motor flowthrough suction opening; and a rotor/stator gap defined by a space between the rotor and the stator, said gap in fluid communication with both the internal low pressure cavity and said suction passage.

Claim 4

The gas flow system of claim 1, wherein said motor flowthrough opening is in said cylinder head, and said suction tube further comprises a second adjutage extending transverse to said conduit and extending through said motor flowthrough opening.

Claim 5

The gas flow system of claim 1, wherein said suction tube is made from a thermally low conductivity plastic.

Claim 6

The gas flow system of claim 1, wherein said walls defining said cylinder suction opening and said motor flowthrough suction opening are each defined by a surface that includes a groove, wherein O-rings are disposed in said grooves.

Claim 7

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a stator and a rotor, and a plurality of parallel cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by walls, said discharge chambers corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders; a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including an elongate conduit extending transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said first adjutages extending transverse to said elongate conduit and extending through said plurality of cylinder suction openings, said plurality of first adjutages extending toward said valve plate but terminating short of extending into said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders.

Claim 8

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a stator and a rotor, and a plurality of parallel cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by walls, said discharge chambers corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders; a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including an elongate conduit extending transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said first adjutages extending transverse to said elongate conduit and extending through said plurality of cylinder suction openings, said plurality of first adjutages extending toward said valve plate but terminating short of extending into said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders.

Claim 9

The gas flow system of claim 6, wherein said suction tube is made from a thermally low conductivity plastic.

Claim 10

The gas flow system of claim 6, wherein said walls defining said plurality of cylinder suction openings include grooves formed therein, wherein O-rings are disposed in said grooves.

Claim 11

The gas flow system of claim 6, wherein a first gap is defined between each said plurality of first adjutages and each said cylinder head walls which define said plurality of cylinder suction openings, each said first gap including an O-ring disposed therein for separating said adjutages from said walls defining said cylinder suction openings, whereby said adjutages are thermally and vibrationally isolated from said walls.

Claim 12

The gas flow system of claim 6, wherein a first gap is defined between each said plurality of first adjutages and said valve plate, said second gaps separating said adjutages from said valve plate, whereby said adjutages are thermally and vibrationally isolated from said valve plate.

Claim 13

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a stator and a rotor, and a plurality of parallel cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by walls, said discharge chambers corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders; motor cooling means for cooling the motor by drawing refrigerant through said motor; and a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including an elongate conduit extending transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said adjutages extending transverse to said elongate conduit and extending through said plurality of cylinder suction openings, said plurality of first adjutages extending substantially to said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders, said suction tube including a motor flowthrough opening communicating with said internal low pressure cavity and adapted to receive refrigerant from said motor cooling means.

Claim 14

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a stator and a rotor, and a plurality of parallel cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by walls, said discharge chambers corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders; motor cooling means for cooling the motor by drawing refrigerant through said motor; and a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including an elongate conduit extending transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said adjutages extending transverse to said elongate conduit and extending through said plurality of cylinder suction openings, said plurality of first adjutages extending substantially to said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders, said suction tube including a motor flowthrough opening communicating with said internal low pressure cavity and adapted to receive refrigerant from said motor cooling means.

Claim 15

The gas flow system of claim 9, wherein said motor flowthrough opening is in said cylinder head, and said suction tube further comprising a second adjutage extending transverse to said elongate conduit and extending through said motor flowthrough opening.

Claim 16

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, a cylinder block, a crankshaft, a valve plate with a suction aperture and a plurality of cylinder suction apertures, a motor having a stator and a rotor, and a plurality of cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by integrally formed walls corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said integrally formed walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders and defining a motor flowthrough suction opening in fluid communication with said suction aperture in said valve plate; motor cooling means in the cylinder block for cooling the motor with the refrigerant gas, said motor cooling means in fluid communication with said suction aperture in said valve plate; and a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said adjutages extending transverse to said elongate conduit and extending towards said plurality of cylinder suction openings, a second adjutage extending transverse to said elongate conduit and extending toward said motor flowthrough suction opening, said plurality of first adjutages extending substantially to said plurality of cylinder apertures in said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders, said second adjutage extending substantially to said suction aperture in said valve plate whereby a portion of the refrigerant is received from the motor.

Claim 17

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, a cylinder block, a crankshaft, a valve plate with a suction aperture and a plurality of cylinder suction apertures, a motor having a stator and a rotor, and a plurality of cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by integrally formed walls corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said integrally formed walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders and defining a motor flowthrough suction opening in fluid communication with said suction aperture in said valve plate; motor cooling means in the cylinder block for cooling the motor with the refrigerant gas, said motor cooling means in fluid communication with said suction aperture in said valve plate; and a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said adjutages extending transverse to said elongate conduit and extending towards said plurality of cylinder suction openings, a second adjutage extending transverse to said elongate conduit and extending toward said motor flowthrough suction opening, said plurality of first adjutages extending substantially to said plurality of cylinder apertures in said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders, said second adjutage extending substantially to said suction aperture in said valve plate whereby a portion of the refrigerant is received from the motor.

Claim 18

The gas flow system of claim 13, wherein said suction tube is made from a thermally low conductivity plastic.

Claim 19

The gas flow system of claim 13, wherein said walls defining said plurality of cylinder suction openings include grooves formed therein, wherein O-rings are disposed in said grooves.

Claim 20

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a stator and a rotor, and a plurality of parallel cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by walls, said discharge chambers corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders; a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including an elongate conduit extending transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said first adjutages extending transverse to said elongate conduit and extending through said plurality of cylinder suction openings being retained thereby, said plurality of first adjutages extending toward said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders.

Claim 21

In a hermetic reciprocating piston compressor for a refrigerant gas including a housing, an internal low pressure cavity defined by the housing, a cylinder block, a crankshaft, a valve plate disposed on said cylinder block, a motor having a stator and a rotor, and a plurality of parallel cylinders having a plurality of pistons disposed therein which reciprocate in an axial direction, a gas flow system comprising: a cylinder head disposed on the valve plate axially outwardly of the cylinders having a discharge port and a plurality of discharge chambers defined by walls, said discharge chambers corresponding to the number of cylinders, said discharge chambers in fluid communication with the cylinders and said discharge port, said walls also defining a plurality of cylinder suction openings axially outwardly disposed over the cylinders; a low thermal conductivity suction tube defining a suction plenum disposed on said cylinder head having a suction inlet in fluid communication with the internal low pressure cavity, said suction tube including an elongate conduit extending transverse to the axial direction of said cylinders, a plurality of first adjutages corresponding to the number of cylinders, said first adjutages extending transverse to said elongate conduit and extending through said plurality of cylinder suction openings being retained thereby, said plurality of first adjutages extending toward said valve plate for substantially bypassing said cylinder head whereby the refrigerant flows directly to the plurality of cylinders.

Claim 22

The gas flow system of claim 16, wherein a first gap is defined between each said plurality of first adjutages and each said cylinder head walls which define said plurality of cylinder suction openings, each said first gap including an O-ring disposed therein for separating said adjutages from said walls defining said cylinder suction openings, whereby said adjutages are thermally and vibrationally isolated from said walls.

Claim 23

The gas flow system of claim 16, wherein a first gap is defined between each said plurality of first adjutages and said valve plate, said second gaps separating said adjutages from said valve plate, whereby said adjutages are thermally and vibrationally isolated from said valve plate.