Compressor having insulation plate

A compressor, comprising:

• a casing having a suction tube through which refrigerant is introduced into the casing and a discharge tube though which the refrigerant is discharged from the casing;
• a compression device including an electric motor, a rotational shaft, and a compression chamber, wherein the compression device is installed inside of the casing and compresses the refrigerant in the compression chamber while rotating by receiving a rotational force of the electric motor through the rotational shaft;
• a backpressure assembly installed at an upper portion of the compression device and having a backpressure piston installed inside of the backpressure assembly, the backpressure piston being configured to move upward and downward in an axial direction of the rotational shaft;
• a high/low pressure separation plate installed at an upper portion of the backpressure assembly and that separates a refrigerant suction space from a refrigerant discharge space, the refrigerant suction space being connected to the suction tube and the refrigerant discharge space being connected to the discharge tube;
• and
• an insulation plate provided in the casing, at least a portion of the insulation plate surrounding the compression device or the backpressure assembly and allowing an insulation space to be defined between the insulation plate and the high/low pressure separation plate, wherein a first end of the insulation plate is connected to the compression device located at a center of the insulation plate, and a second end of the insulation plate extends toward an inner surface of the casing.