(19)
(11)EP 4 067 619 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
12.10.2022 Bulletin 2022/41

(43)Date of publication A2:
05.10.2022 Bulletin 2022/40

(21)Application number: 22159827.9

(22)Date of filing:  02.03.2022
(51)International Patent Classification (IPC): 
F01C 21/00(2006.01)
F04C 23/00(2006.01)
F04C 18/16(2006.01)
F04C 29/00(2006.01)
(52)Cooperative Patent Classification (CPC):
F04C 18/16; F04C 23/001; F04C 29/005; F01C 21/007; F04C 2240/30
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 25.03.2021 CN 202110319342

(71)Applicant: Carrier Corporation
Palm Beach Gardens, FL 33418 (US)

(72)Inventor:
  • WU, Hu
    Shanghai, 201206 (CN)

(74)Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

  


(54)TWO-STAGE SCREW COMPRESSOR AND AIR CONDITIONING SYSTEM


(57) Air conditioning system and two-stage screw compressor (100) comprising: a housing (110) with an intake port (111) and an exhaust port (112) provided thereon; a low-pressure stage screw set (120) axially arranged in the housing (110) and connected to the intake port (111); a high-pressure stage screw set (130) axially arranged in the housing (110) and connected to the exhaust port (112); a drive motor (140) axially arranged in the housing (110); and a transmission gear set (150) for simultaneously transmitting a torque provided by the drive motor (140) to the low-pressure stage screw set (120) and the high-pressure stage screw set (130); wherein, the drive motor (140), the low-pressure stage screw set (120) and the high-pressure stage screw set (130) are axially arranged on the same side of the transmission gear set (150).







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