公开(公告)号：EP4403777A1

公开(公告)日：2024-07-24

申请号：EP22869015.2

申请日：2022-08-29

申请人： Johnson Controls Air Conditioning And Refrigeration (Wuxi) Co., Ltd. ,  Tyco Fire & Security GmbH

发明人： ZHANG, Haixian ,  LIN, Kun ,  XI, Ye ,  CUI, LIqi ,  JIANG, Cheng ,  KUANG, Yi

IPC分类号： F04C18/16 ,  F04C29/12

摘要： A compressor, comprising: a housing (101) provided with a rotor accommodating cavity (105) and an exhaust cavity (180); and a pair of screw rotors (110) at least partially located in the rotor accommodating cavity (105), a compression accommodating cavity (150) being formed between teeth of the pair of screw rotors (110) and the housing (101), and the pair of screw rotors (110) having a suction end (112) and an exhaust end (113), wherein the housing (101) further comprises an unloading channel (208) and a connecting channel (308), the unloading channel (208) is provided with an unloading channel inlet (216) and an unloading channel outlet (217), the unloading channel inlet (216) can be communicated with the compression accommodating cavity (150) through the connecting channel (308), and the unloading channel outlet (217) is communicated with a suction side of the compressor; and an unloading device (109) configured to controllably open or close the connecting channel (308), such that the compression accommodating cavity (150) can be controllably communicated with or disconnected from the connecting channel (308). The compressor can reduce the load upon startup.