Abstract: A static scroll and a scroll compressor are provided. The static scroll has a scroll body, a partition, and a protrusion of a closed annular shape. The scroll body has a working fluid inlet and a working fluid outlet, and defines a working fluid flow groove having an open end. The partition is disposed in the working fluid flow groove to divide the working fluid flow groove into a working fluid entry cavity and a working fluid compression cavity. The working fluid entry cavity connects the working fluid inlet with the working fluid compression cavity, and the working fluid outlet is in communication with the working fluid compression cavity. The protrusion is disposed on the scroll body and surrounds the open end of the working fluid flow groove.

Abstract: A scroll structure and a compressor are provided. The scroll structure has a first scroll plate, a second scroll plate matching the first scroll plate, a back pressure plate and a floating plate. The first scroll plate and the second scroll plate can move relative to each other. A recess is provided at one end of the second scroll plate facing away from the first scroll plate. A first through hole is provided on the second scroll plate. The back pressure plate is arranged in the recess. A gap is provided between the back pressure plate and a side wall of the recess. The floating plate is movably arranged on the back pressure plate. The floating plate covers the gap. A first chamber is formed among the second scroll plate, the back pressure plate and the floating plate. The first through hole is in communication with the first chamber.

Abstract: A compressor and a refrigeration device are provided. The compressor has a casing and a main frame disposed in the casing. The main frame has a guide structure configured to position the main frame. By coordination between the guide structure and a tooling, the process for positioning the main frame can be effectively simplified, the efficiency of positioning the main frame can be improved, and the assembly operation by workers can be facilitated.