(19)
(11) EP 4 006 346 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.06.2022 Bulletin 2022/23

(43) Date of publication A2:
01.06.2022 Bulletin 2022/22

(21) Application number: 21209445.2

(22) Date of filing: 22.11.2021
(51) International Patent Classification (IPC): 
F04C 18/32(2006.01)
 F04C 29/12(2006.01)
(52) Cooperative Patent Classification (CPC):
F04C 18/322; F04C 29/124; F04C 2240/806; F04C 2250/00
(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: 25.11.2020 JP 2020195464

(71) Applicant: DAIKIN INDUSTRIES, LTD.
Osaka-shi, Osaka 530-8323 (JP)

(72) Inventors:
  • IRIKAWA, Kouichi
    Osaka-shi, Osaka, 530-8323 (JP)
  • ENDOU, Chihiro
    Osaka-shi, Osaka, 530-8323 (JP)
  • INADA, Yukihiro
    Osaka-shi, Osaka, 530-8323 (JP)
  • WADA, Ryousuke
    Osaka-shi, Osaka, 530-8323 (JP)
  • SUNAHARA, Yuuya
    Osaka-shi, Osaka, 530-8323 (JP)
  • KATO, Emu
    Osaka-shi, Osaka, 530-8323 (JP)

(74) Representative: Goddar, Heinz J. 
Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22
80336 München
80336 München (DE)

   


(54) ROTARY COMPRESSOR AND REFRIGERATION APPARATUS


(57) A compressor includes a cylinder (101); a cylinder chamber (103); a piston turning along an inner peripheral surface (101a) of the cylinder (101); a blade that partitions the cylinder chamber (103) into a high pressure side region and a low pressure side region together with the piston; a blade hole (104) allowing the blade to advance and retract; a suction passage (120) that extends from an outer peripheral surface of the cylinder (101) to the inner peripheral surface (101a) of the cylinder (101) and guides a refrigerant to the cylinder chamber (103); and a pipe connection member (200) having a press-fitting portion (201b) press-fitted into the suction passage (120) from a radially outer side of the cylinder (101). A distance (R2) from a center point (O1) of the cylinder chamber (103) to the press-fitting portion (201b) is equal to or longer than a distance (R1) to a radially outer end of the blade hole (104).







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