Abstract: A pump body assembly and a compressor are provided. The pump body includes: a spindle, wherein the spindle has a sliding vane chute, a back pressure oil cavity being at least a part of an oil passage is located at a tail end of the sliding vane chute, an oil outlet of the back pressure oil cavity is located at the top of the back pressure oil cavity, and a position of the oil inlet of the back pressure oil cavity is lower than that of an oil outlet of the back pressure oil cavity such that a lubrication medium enters the back pressure oil cavity through the oil inlet of the back pressure oil cavity and fills up the back pressure oil cavity and flows out from the top of the back pressure oil cavity.

Abstract: A pump body assembly and a compressor are provided. The pump body includes: a spindle, wherein the spindle has a sliding vane chute, a back pressure oil cavity being at least a part of an oil passage is located at a tail end of the sliding vane chute, an oil outlet of the back pressure oil cavity is located at the top of the back pressure oil cavity, and a position of the oil inlet of the back pressure oil cavity is lower than that of an oil outlet of the back pressure oil cavity such that a lubrication medium enters the back pressure oil cavity through the oil inlet of the back pressure oil cavity and fills up the back pressure oil cavity and flows out from the top of the back pressure oil cavity.

Abstract: A cylindrical microwave oven comprises a shell (1) an oven cavity (2) and a microwave generator (3) inside the shell radiating microwave into the cavity. A door (6) for closing or opening the cavity (2) is mounted in the front of the shell. An upper disk cover (21), a U-shaped board (22) and a lower disk cover (23) form a cavity (2) with a front opening (101). The U-shaped board is supported between the upper cover (21) and the lower cover (23). The door (6) is a circular arc board for closing or opening the front opening (101) of the cavity (2).