Wobble plate type compressor with variable displacement mechanism

Claim 1

A wobble plate type compressor (1) including a housing (2) having a cylinder block (4) provided with a plurality of cylinders (13); a suction chamber (51) and a discharge chamber (52); a crank chamber (22) adjacent the cylinder block; a piston (12) slidable in each cylinder (13) and arranged to be reciprocated by a drive mechanism including a wobble plate (10); an input drive rotor (8); and a drive shaft (7) connected to the input rotor to drive the input rotor; slant angle control means having a control valve mechanism (16) including a first valve (163a) to control the communication between the crank chamber (22) and the discharge chamber (52), a second valve (163c) to control the communication between the crank chamber (22) and the suction chamber (51), and a pressure sensing means (162) to control operation of the first and second valves, characterized in that the pressure sensing means (162) is disposed within a pressure chamber (162c) unconnected with the suction chamber (51) and having a port (161h) to which refrigerant pressure at a position in a refrigerant circuit between an inlet port of the compressor and an evaporator can be introduced in use.