Suction duct with adjustable diametric fit

A compressor for compressing a fluid, comprising:

• a housing having an inlet for receiving the fluid and an outlet returning the fluid;
• a compressor mechanism adapted to compress the fluid toward the outlet, the compressor mechanism housed in the housing;
• a drive unit operatively connected to the compressor mechanism for driving the compression mechanism to compress fluid;
• a suction duct in the housing having an inlet region arranged over the inlet of the housing, the suction duct having a sealing face about the inlet region, the sealing face being spring biased against an internal surface of the housing;
• wherein the housing comprises a generally cylindrical shell section, wherein the housing defines an inlet flow axis surrounded by the inlet in which flow initially enters the housing, the suction duct comprising a ring body;
• and
• wherein the ring body has a maximum span in the inlet flow axis, to cause the ring body to be squeezed along the inlet flow axis by the shell section, thereby creating a spring biasing force to spring bias the sealing face against the internal surface of the housing.

A compressor for compressing a fluid, comprising;

• a housing having an inlet for receiving the fluid and an outlet returning the fluid;
• a compressor mechanism adapted to compress the fluid toward the outlet, the compressor mechanism housed in the housing;
• a drive unit operatively connected to the compressor mechanism for driving the compression mechanism to compress fluid;
• and
• a suction duct in the housing having an inlet region arranged over the inlet of the housing, the suction duct having a sealing face about the inlet region, the sealing face being spring biased against an internal surface of the housing;
• wherein the suction duct comprises a ring body surrounding the drive unit in the form of an electrical motor, the suction duct defining an inlet port extending through the ring body, the inlet port aligned with the inlet to communicate fluid from the inlet directly into the electrical motor.

A compressor for compressing a fluid, comprising:

• a housing having an inlet for receiving the fluid and an outlet returning the fluid, the housing comprising a generally cylindrical shell section surrounding a vertical axis, wherein the housing defines an inlet flow axis surrounded by the inlet in which flow initially enters the housing, the inlet flow axis being generally perpendicular to the vertical axis;
• a compressor mechanism adapted to compress the fluid toward the outlet, the compressor mechanism housed in the housing, the compressor mechanism comprising scroll compressor bodies having respective bases and respective scroll ribs that project from the respective bases and which mutually engage about an axis for compressing fluid;
• a drive unit operatively connected to the compressor mechanism for driving the compression mechanism to compress fluid, the drive unit being in the form of an electrical motor, the electrical motor operative to facilitate relative orbiting movement between the scroll compressor bodies;
• and
• a suction duct in the housing having an inlet region arranged over the inlet of the housing, the suction duct having a sealing face about the inlet region, the sealing face being spring biased against an internal surface of the housing, a spring bias mechanism is unitarily formed into a body of the suction duct, the suction duct being formed of resilient plastic material that is resiliently deflected as installed in the housing, the suction duct comprising a ring body, wherein the sealing face comprises an arcuate face generally forming to a generally cylindrical surface of the internal surface of the housing, further comprising a screen situated in an inlet port of the ring body and arranged to filter out large particles prior to fluid reaching the electrical motor, the inlet port comprising a window completely surrounded by the sealing face;
• wherein the ring body has a maximum span in a transverse axis that is greater than a maximum span along the inlet flow axis, with the ring body being squeezed along the transverse axis by the shell section, thereby creating spring biasing force to spring bias the sealing face against an internal surface of the housing.

A compressor for compressing a fluid, comprising:

• a housing having an inlet for receiving the fluid and an outlet returning the fluid, the housing comprising a generally cylindrical shell section surrounding a vertical axis, wherein the housing defines an inlet flow axis surrounded by the inlet in which flow initially enters the housing, the inlet flow axis being generally perpendicular to the vertical axis;
• a compressor mechanism adapted to compress a fluid toward the outlet, the compressor mechanism housed in the housing, the compressor mechanism comprising scroll compressor bodies having respective bases and respective scroll ribs that project from the respective bases and which mutually engage about an axis for compressing fluid;
• a drive unit operatively connected to the compressor mechanism for driving the compression mechanism to compress fluid the drive unit being in the form of an electrical motor, the electrical motor operative to facilitate relative orbiting movement between the scroll compressor bodies;
• and
• a suction duct in the housing having an inlet region arranged over the inlet of the housing, the suction duct having a sealing face about the inlet region, the sealing face being spring biased against an internal surface of the housing, a spring bias mechanism is unitarily formed into a body of the suction duct, the suction duct being formed of resilient plastic material that is resiliently deflected as installed in the housing, the suction duct comprising a ring body, wherein the sealing face comprises an arcuate face generally forming to a generally cylindrical surface of the internal surface of the housing, further comprising a screen situated in an inlet port of the ring body and arranged to filter out large particles prior to fluid reaching the electrical motor, the inlet port comprising a window completely surrounded by the sealing face;
• wherein the ring body has a maximum span in the inlet flow axis that is greater than a maximum span along a transverse axis of the ring body, with the ring body being squeezed along the inlet flow axis by the shell section, thereby creating spring biasing force to spring bias the sealing face against an internal surface of the housing.

A compressor for compressing a fluid, comprising:

• a housing having an inlet for receiving the fluid and an outlet returning the fluid the housing comprising a generally cylindrical shell section surrounding a vertical axis, wherein the housing defines an inlet flow axis surrounded by the inlet in which flow initially enters the housing, the inlet flow axis being generally perpendicular to the vertical axis;
• a compressor mechanism adapted to compress the fluid toward the outlet, the compressor mechanism housed in the housing, the compressor mechanism comprising scroll compressor bodies having respective bases and respective scroll ribs that project from the respective bases and which mutually engage about an axis for compressing fluid;
• a drive unit operatively connected to the compressor mechanism for driving the compression mechanism to compress fluid, the drive unit being in the form of an electrical motor, the electrical motor operative to facilitate relative orbiting movement between the scroll compressor bodies;
• and
• a suction duct in the housing having an inlet region arranged over the inlet of the housing, the suction duct having a sealing face about the inlet region, the sealing face being spring biased against an internal surface of the housing, a spring bias mechanism is unitarily formed into a body of the suction duct, the suction duct being formed of resilient plastic material that is resiliently deflected as installed in the housing, the suction duct comprising a ring body, wherein the sealing face comprises an arcuate face generally forming to a generally cylindrical surface of the internal surface of the housing further comprising a screen situated in an inlet port of the ring body and arranged to fitter out large particles prior to fluid reaching the electrical motor, the inlet port comprising a window completely surrounded by the sealing face;
• wherein the ring body comprises a plurality of outer peripheral arcuate wall sections connected by recessed walled sections, and a transverse axis extending generally perpendicular to the vertical axis and the inlet flow axis, the plurality of outer peripheral arcuate wall sections including a first cooperating pair intersecting the inlet flow axis, one outer peripheral arcuate wall section of the first cooperating pair acting upon a generally cylindrical surface of the internal surface of the housing to provide the sealing face, a second cooperating pair intersecting the transverse axis, wherein said one outer peripheral arcuate wall section of the first cooperating pair that acts upon a generally cylindrical surface of the internal surface of the housing to provide the sealing face spans a greater angular dimension than the other arcuate sections, and wherein the recessed walled sections define a smaller outer perimeter than the outer peripheral arcuate wall sections, gaps formed between the recessed walled sections and the generally cylindrical shell section providing oil flow passageways past the ring body, and wherein the recessed wall sections comprise an inner perimeter, each of the outer peripheral arcuate wall sections comprising interior reliefs along the inner perimeter that extend at radii larger than the inner perimeter.

A method for providing a compressor, comprising:

• housing a compressor mechanism in a housing having an inlet for receiving a fluid and an outlet returning the fluid, the compressor mechanism adapted to compress the fluid toward the outlet;
• driving the compressor mechanism to compressor the fluid;
• spring biasing a suction duct in the housing to substantially seal a sealing face of the suction duct against the housing;
• and
• inletting fluid through the suction duct with an inlet region having an inlet port formed into the suction duct at least partially surrounded by the sealing face, the inlet port aligned with the inlet;
• wherein the housing defines an inlet flow axis surrounded by the inlet in which flow initially enters the housing, further comprising forming the suction duct in the shape of a ring, dimensioning the ring to interfere and compress along an axis transverse to the inlet flow axis and expand along the inlet flow axis to provide the spring biasing.

A method for providing a compressor, comprising:

• housing a compressor mechanism in a housing having an inlet for receiving a fluid and an outlet returning the fluid, the compressor mechanism adapted to compress the fluid toward the outlet;
• driving the compressor mechanism to compressor the fluid;
• spring biasing a suction duct in the housing to substantially seal a sealing face of the suction duct against the housing;
• and
• inletting fluid through the suction duct with an inlet region having an inlet port formed into the suction duct at least partially surrounded by the sealing face, the inlet port aligned with the inlet;
• wherein the housing defines an inlet flow axis surrounded by the inlet in which flow initially enters the housing, further comprising forming the suction duct in the shape of a ring, dimensioning the ring to interfere and compress along the inlet flow axis and expand along an axis transverse to the inlet flow axis to provide the spring biasing.