Liquid accumulator, compressor assembly and air conditioner

The utility model provides a liquid storage device, a compressor assembly and an air conditioner. The liquid storage device comprises an inlet pipe connector, an outlet pipe connector and an upper sealing head. The inlet pipe joint comprises a first joint pressing plate and a first joint part, the first joint part is partially inserted into the first accommodating cavity, the other part of the first joint part is fixedly connected with the first inlet pipe, the first joint pressing plate sleeves the periphery of the first joint part and is fixedly connected with the upper sealing head, and the first joint part and the first inlet pipe form an integrated structure and can rotate relative to the first joint pressing plate; and/or the outlet pipe joint comprises a second joint pressing plate and a second joint part, part of the second joint part is inserted into the second containing cavity, the other part of the second joint part is fixedly connected with the first outlet pipe, the second joint pressing plate i