초록 ▼

A variable capacity single-headed piston type compressor having a cylinder block defining therein a plurality of cylinder bores in which single-headed pistons are reciprocated so as to compress refrigerant gas in response to a rotation of rotation-to-reciprocation converting unit arranged in a crank

A variable capacity single-headed piston type compressor having a cylinder block defining therein a plurality of cylinder bores in which single-headed pistons are reciprocated so as to compress refrigerant gas in response to a rotation of rotation-to-reciprocation converting unit arranged in a crank shaft defined by the cylinder block and a front housing hermetically attached to a front end of the cylinder block, the crank chamber being provided with a suction gas inlet port formed so as to open into the crank chamber, a rear housing hermetically attached to a rear end of the cylinder block and defining a suction chamber for the refrigerant gas before compression and a discharge chamber for the refrigerant gas after compression, the suction chamber being in fluid communication with the crank chamber so as to receive the refrigerant gas from the crank chamber via a fluid passageway for the suction of the refrigerant gas, and a flow regulating valve arranged in the fluid passageway to adjustably change the cross-sectional area of the fluid passageway to thereby control the pressure in the suction chamber.

대표청구항 ▼

[ We claim:] [1.] A variable capacity single-headed piston type compressor suitable for being incorporated in an external refrigerating system comprising:a cylinder block having axial front and rear ends and defining a plurality of axial cylinder bores therein around a central axis thereof;a front h

[ We claim:] [1.] A variable capacity single-headed piston type compressor suitable for being incorporated in an external refrigerating system comprising:a cylinder block having axial front and rear ends and defining a plurality of axial cylinder bores therein around a central axis thereof;a front housing hermetically attached to said front end of said cylinder block so as to define a crank chamber therein;a rear housing hermetically attached to said rear end of said cylinder block so as to define therein a suction chamber for a refrigerant gas before compression and a discharge chamber for said refrigerant gas after compression;an axial drive shaft rotatably supported in said front housing and said cylinder block to be rotated about an axis of rotation thereof, said axial drive shaft having a front end receiving a drive power thereat;a plurality of single-headed pistons slidably received in said plurality of cylinder bores for implementing suction, compression and discharge of said refrigerant gas;a rotation-to-reciprocation converting plate-like means arranged to be rotated together with said drive shaft and provided with a plate portion angularly inclined from a plane perpendicular to said axis of rotation of said axial drive shaft, wherein the angle of inclination thereof can change in response to a change in a differential between pressures prevailing in said crank chamber and said suction chamber, said rotation-to-reciprocation converting plate-like means being operatively connected to said plurality of single-headed pistons to thereby generate reciprocation of said pistons;a suction gas inlet means for providing a fluid connection between said crank chamber and said external refrigerating system so as to introduce said refrigerant gas, before compression, directly into said crank chamber from said external refrigerating system;a discharge gas outlet means for providing a fluid connection between said discharge chamber and said external refrigerating system so as to deliver said refrigerant gas, after compression, to said refrigerating system;a fluid passageway means extending between said crank chamber and said suction chamber for providing a constant fluid connection therebetween, said fluid passageway means including at least one port portion formed therein to have a predetermined cross-sectional area; anda flow regulating valve means disposed in said fluid passageway means and cooperating with said port portion of said fluid passageway means so as to regulate said cross-sectional area of said port portion with respect to said predetermined cross-sectional area thereof to thereby adjustably change the pressure prevailing in said suction chamber.