Shape of suction hole and discharge hole of refrigerant compressor

A compressor having a suction valve mechanism, comprising:

• a valve plate having at least one suction passage for providing fluid communication between a suction chamber and a piston cylinder, a suction valve reed, and means for limiting a motion of said suction valve reed;
• and
• said at least one suction passage comprises a first piston cylinder-side opening having a first piston cylinder-side opening area, a suction chamber-side opening having a suction chamber-side opening area, and a sidewall extending between said openings, wherein at least a portion of said suction passage sidewall is continuously tapered throughout said passage, and wherein said first piston cylinder-side opening area is greater than said suction chamber-side opening area.

A compressor having a discharge valve mechanism, comprising:

• a valve plate having at least one discharge passage for providing fluid communication between a piston cylinder and a discharge chamber, a discharge valve reed, and a valve retainer;
• and
• said at least one discharge passage comprising a first piston cylinder-side opening having a first cylinder-side opening area, a discharge chamber-side opening having a discharge chamber-side opening area, and a sidewall extending between said openings, wherein at least a portion of said discharge passage sidewall is tapered, and wherein a rate of taper of said tapered portion is non-linear and non-uniform and increases between said first cylinder-side opening area and said discharge chamber-side opening area, and wherein said discharge chamber-side opening area is greater than said first piston cylinder-side opening area.

A compressor having a discharge valve mechanism, comprising:

• a valve plate having at least one discharge passage for providing fluid communication between a piston cylinder and a discharge chamber, a discharge valve reed, and a valve retainer;
• and
• said at least one discharge passage comprising a first piston cylinder-side opening having a first cylinder-side opening area, a discharge chamber-side opening having a discharge chamber-side opening area, and a sidewall extending between said openings, wherein at least a portion of said discharge passage sidewall is tapered to said first piston cylinder-side opening, and wherein said discharge chamber-side opening area is greater than said first piston cylinder-side opening area.

A compressor having a discharge valve mechanism, comprising:

• a valve plate having at least one discharge passage for providing fluid communication between a piston cylinder and a discharge chamber, a discharge valve reed positioned in the same plane as said valve plate, and a valve retainer,
• said at least one discharge passage comprising a first piston cylinder-side opening having a first cylinder-side opening area, a discharge chamber-side opening having a discharge chamber-side opening area, and a sidewall extending between said openings, wherein at least a portion of said discharge passage sidewall is tapered, and wherein a rate of taper of said tapered portion is non-linear and increases between said first cylinder-side opening area and said discharge chamber-side opening area, and wherein said discharge chamber-side opening area is greater than said first piston cylinder-side opening area.

A compressor having a discharge valve mechanism, comprising:

• a valve plate having at least one discharge passage for providing fluid communication between a piston cylinder and a discharge chamber, a discharge valve reed positioned in the same plane as said valve plate, and a valve retainer,
• said at least one discharge passage comprising a first piston cylinder-side opening having a first cylinder-side opening area, a discharge chamber-side opening having a discharge chamber-side opening area, and a sidewall extending between said openings, wherein at least a portion of said discharge passage sidewall is tapered to said first piston cylinder-side opening, and wherein said discharge chamber-side opening area is greater than said first piston cylinder-side opening area.