Abstract: A compressor includes a fixed scroll, a movable scroll and a cover body. The cover body has an injection hole. The compressor has a compression chamber which is at least partially located between the fixed scroll and the movable scroll. The compressor includes a communication tube which defines a communication channel in communication with the enthalpy increasing channel. One end of the communication tube is at least partially located in the enthalpy increasing channel. A circumferential side wall of the one end of the communication tube is directly or indirectly in contact with an inner wall of the enthalpy increasing channel. Another end of the communication tube is at least partially located within the injection hole. A circumferential side wall of the another end of the communication tube is directly or indirectly in contact with an inner wall of the injection hole.

Abstract: A scroll compressor includes a movable scroll and a fixed portion. The fixed portion has a first bearing surface. The movable scroll has a second bearing surface. The scroll compressor includes a back pressure chamber located between the movable scroll and the fixed portion. At least one of the movable scroll and the fixed portion is provided with a groove disposed on a periphery of the back pressure chamber. The scroll compressor further includes a sealing assembly at least partially installed in the groove. One end of the sealing assembly is in contact with a groove bottom surface in the groove, and another end of the sealing assembly is in contact with the first bearing surface or the second bearing surface. The sealing assembly includes a wear-resistant ring and an elastic ring. The elastic ring has at least one recess on a surface thereof.