COMPRESSOR

WIPO Patent Application WO/2023/040643

A1

A compressor, comprising: a housing (101) provided with a rotor accommodating cavity (105) and an exhaust cavity (180); 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.

ZHANG HAIXIAN (CN)
LIN KUN (CN)
XI YE (CN)
CUI LIQI (CN)
JIANG CHENG (CN)
KUANG YI (CN)

PCT/CN2022/115501

March 23, 2023

August 29, 2022

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JOHNSON CONTROLS AIR CONDITIONING AND REFRIGERATION WUXI CO LTD (CN)
JOHNSON CONTROLS TYCO IP HOLDINGS LLP (US)

F04C18/16; F04C29/12

CN113982916A	2022-01-28
CN110578690A	2019-12-17
CN210769318U	2020-06-16
US4544333A	1985-10-01
JPH03121291A	1991-05-23
JP2008240579A	2008-10-09

TUO YING LAW OFFICES (SHANGHAI) (CN)

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