Displacement control structure for a variable displacement compressor

A displacement control structure for a variable displacement compressor that includes a housing assembly having a pressure control chamber and a suction pressure region, wherein refrigerant in a discharge pressure region is supplied to the pressure control chamber through a supply passage while the refrigerant in the pressure control chamber flows into the suction pressure region through a bleed passage whereby pressure in the pressure control chamber is adjusted to control displacement of the compressor, comprising:

• a passage forming member connected to an exterior surface of the housing assembly for forming a refrigerant passage for allowing the refrigerant to be discharged out from the compressor to an external refrigerant circuit;
• a flat partition interposed between the passage forming member and the housing assembly, wherein a throttle penetrates through the partition, which divides the refrigerant passage into an upstream passage and a downstream passage;
• and
• a displacement control valve provided in the passage forming member, wherein the displacement control valve senses pressure of the refrigerant in the upstream passage and pressure of the refrigerant in the downstream passage to control the flow rate of the refrigerant flowing through the supply passage.