Cylinder-rotation compressor with a discharge valve

A cylinder-rotation compressor comprising:

• a rotatable cylinder that includes a cylindrical member which extends in an axial direction of a rotating axis, and a closing member which closes an end of the cylindrical member in the axial direction;
• a columnar member which is housed inside the rotatable cylinder and extends in the axial direction of the rotating axis of the rotatable cylinder;
• and
• a partition member which is slidably fitted into a groove portion provided in one of the rotatable cylinder and the columnar member, and partitions a compression chamber provided between the rotatable cylinder and the columnar member, wherein
• the closing member includes a discharge hole through which a fluid compressed in the compression chamber flows out of the compression chamber,
• the cylinder-rotation compressor further comprising a discharge valve that limits backward flow of the fluid into the compression chamber through the discharge hole,
• the discharge valve is a plate-shaped member, and includes a valve body portion that closes the discharge hole, a fixing portion that is fixed to the rotatable cylinder, and a support portion that couples the valve body portion with the fixing portion,
• a shape of the valve body portion and a shape of the support portion are substantially symmetrical with respect to a line segment extending in a radial direction of the rotating axis when viewed from the axial direction of the rotating axis, and
• the valve body portion is disposed on a radially outer side of a connection portion connecting the fixing portion and the support portion.