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US 2012/0073430 A1Published application
Variable Displacement Compressor
OwnerIwao Uchikadoinventor
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OwnerIwao Uchikadoinventor
Estimating the term…
Disclosed is a variable displacement compressor having improved compressor performance such as reduced pulsation and improved durability and resistance to pressure and allowing smooth and high-precision control of a swash plate tilt angle at a target tilt angle by using an axial movement member. The variable displacement compressor is provided with a cylinder head in which a suction chamber and a discharge chamber are formed, a cylinder block having a cylinder bore into which a piston is inserted at a condition capable of being reciprocated, a crank chamber formed by the cylinder block and a front housing, a swash plate which is disposed in the crank chamber and which is rotated with a main shaft and is supported so that the tilt angle thereof can be changed relative to the main shaft, and a movement conversion mechanism for converting the rotational movement of the swash plate to the reciprocating movement of the piston, wherein: a suction path for intake of a suction gas into the compressor is formed so as to open into the crank chamber; a communication path for communicating the crank chamber and the suction chamber is provided in the cylinder block; around the main shaft, an axial movement member is provided that can move in a direction along the axis of the main shaft in an essentially one to one correspondence with the tilt angle of the swash plate; the axial movement member is disposed such that one end is applied with the pressure in the crank chamber, and the other end is applied with an intermediate pressure between the pressure in the discharge chamber and the pressure in the suction chamber; and an intermediate pressure control mechanism which can control the intermediate pressure is also provided.
A variable displacement compressor provided with a cylinder head in which a suction chamber and a discharge chamber are formed, a cylinder block having a cylinder bore into which a piston is inserted at a condition capable of being reciprocated, a crank chamber formed by said cylinder block and a front housing, a swash plate which is disposed in said crank chamber and which is rotated with a main shaft and is supported so that a tilt angle thereof can be changed relative to said main shaft, and a movement conversion mechanism for converting rotational movement of said swash plate to reciprocating movement of said piston, characterized in that a suction path for intake of a suction gas into said compressor is formed so as to open into said crank chamber, a communication path for communicating said crank chamber and said suction chamber is provided in said cylinder block, an axial movement member, which can move in a direction along an axis of said main shaft in an essentially one to one correspondence with said tilt angle of said swash plate, is provided around said main shaft, said axial movement member is disposed such that one end is applied with a pressure in said crank chamber and the other end is applied with an intermediate pressure between a pressure in said discharge chamber and a pressure in said suction chamber, and an intermediate pressure control mechanism which can control said intermediate pressure is also provided.
Dependencies are inferred from the claim text.