(19)
(11) EP 1 553 293 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.03.2006 Bulletin 2006/10

(43) Date of publication A2:
13.07.2005 Bulletin 2005/28

(21) Application number: 04030278.8

(22) Date of filing: 21.12.2004
(51) International Patent Classification (IPC): 
F04B 27/10(2006.01)
F04B 53/16(2006.01)
 F04B 53/08(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 25.12.2003 JP 2003431650

(71) Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Enokijima, Fuminobu
    Kariya-shi Aichi-ken (JP)
  • Ota, Masaki
    Kariya-shi Aichi-ken (JP)
  • Fukanuma, Tetsuhiko
    Kariya-shi Aichi-ken (JP)
  • Murase, Masakazu
    Kariya-shi Aichi-ken (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Heat insulating structure in piston type compressor


(57) A heat insulating structure in a piston type compressor includes a heat insulating member. The piston type compressor includes a cylinder block and a cover housing connected to the cylinder block, a piston is accommodated in a cylinder bore defined in the cylinder block to define a compression chamber. A suction pressure region and a discharge pressure region are defined in the cover housing. The piston is reciprocated in the cylinder bore in accordance with rotation of a rotary shaft so that refrigerant gas is drawn from the suction pressure region to the compression chamber and discharged from the compression chamber to the discharge pressure region. The heat insulating member has a predetermined shape and is located in the cylinder block. The heat insulating member has an inner peripheral surface that defines the cylinder bore.







Search report