Compressors for fluids

Claim 2

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motorcompressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, and a diaphragm subdividing said interior chamber of the piston, said diaphragm having a central restrictor orifice through which the fluid flows during induction strokes in operation of the compressor, whereby silencing of the suction or induction side of the piston is effected.

Claim 3

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, said compressor piston being provided with a suction antechamber and an external conduit interconnecting said suction antechamber with said interior chamber of the piston, and means communicating the suction antechamber with the interior of the casing, whereby silencing of the suction or induction side of the piston is effected.

Claim 4

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, said compressor piston being provided with a suction antechamber and an external conduit interconnecting said suction antechamber with said interior chamber of the piston, and means communicating the suction antechamber with the interior of the casing, whereby silencing of the suction or induction side of the piston is effected.

Claim 5

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, a crosshead carried by the piston, and a slide mounted for reciprocation in the crosshead by means of the motor, said slide being formed with two suction antechambers each communicating with the interior of the casing and cooperating parts in the slide and the crosshead communicating the suction antechambers with said interior chamber of the piston, whereby silencing of the suction or induction side of the piston is effected.

Claim 6

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, a crosshead carried by the piston, and a slide mounted for reciprocation in the crosshead by means of the motor, said slide being formed with two suction antechambers each communicating with the interior of the casing and cooperating parts in the slide and the crosshead communicating the suction antechambers with said interior chamber of the piston, whereby silencing of the suction or induction side of the piston is effected.

Claim 7

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, an inlet nonreturn valve on said piston through which valve fluid is admitted from said interior chamber of the piston into the cylinder upon induction strokes of the piston, whereby silencing of the suction or induction side of the piston is effected.

Claim 8

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, an inlet nonreturn valve on said piston through which valve fluid is admitted from said interior chamber of the piston into the cylinder upon induction strokes of the piston, whereby silencing of the suction or induction side of the piston is effected.

Claim 9

Compressor as claimed in claim 4, in which the said inlet nonreturn valve comprises a metal flap valve.

Claim 10

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, said piston being arranged for vertical reciprocation and including a lubricating pump carried by the piston and comprising a downwardly extending conduit, a one-way valve at the lower end of the conduit disposed below the level of the lubricant in the casing interior over at least part of the piston stroke, said valve opening to admit lubricant into said conduit on each descending piston stroke, and closing to trap lubricant in the conduit on each ascending piston stroke, whereby silencing of the suction or induction side of the piston is effected.

Claim 11

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, said piston being arranged for vertical reciprocation and including a lubricating pump carried by the piston and comprising a downwardly extending conduit, a one-way valve at the lower end of the conduit disposed below the level of the lubricant in the casing interior over at least part of the piston stroke, said valve opening to admit lubricant into said conduit on each descending piston stroke, and closing to trap lubricant in the conduit on each ascending piston stroke, whereby silencing of the suction or induction side of the piston is effected.

Claim 12

Compressor as claimed in claim 6, in which said one-way valve has a movable element comprising a metal plate and means supporting the metal plate in an inclined plane subdividing the said conduit into upper and lower chambers.

Claim 13

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, said resilient suspension means comprise a continuous frame of resilient wire and means securing the wire frame to the casing at opposite ends of the casing, said frame comprising two longitudinal members formed with loops for enhancing their flexibility, and upraised end portions interconnecting opposite ends of the longitudinal members and meeting the respective longitudinal members in respective acute-angled corners, whereby silencing of the suction or induction side of the piston is effected.

Claim 14

Compressor for fluids, particularly the working fluid in a refrigerator, comprising a sealed casing, a motor-compressor unit, and resilient suspension means supporting said motor-compressor unit within said casing, said unit including a motor, a cylinder and a compressor piston reciprocable in the cylinder, said piston including at least one interior chamber through which fluid to be compressed is drawn from the interior of the casing into the cylinder, said resilient suspension means comprise a continuous frame of resilient wire and means securing the wire frame to the casing at opposite ends of the casing, said frame comprising two longitudinal members formed with loops for enhancing their flexibility, and upraised end portions interconnecting opposite ends of the longitudinal members and meeting the respective longitudinal members in respective acute-angled corners, whereby silencing of the suction or induction side of the piston is effected.

Claim 15

Compressor as claimed in claim 8, in which the motor-compressor unit has a support provided with parts which engage the longitudinal members of the frame to support the unit from the frame.