(19)
(11) EP 0 283 963 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.08.1989 Bulletin 1989/31

(43) Date of publication A2:
28.09.1988 Bulletin 1988/39

(21) Application number: 88104389.7

(22) Date of filing: 18.03.1988
(51) International Patent Classification (IPC)4: F04B 1/28, F04B 27/08
(84) Designated Contracting States:
DE FR GB IT SE

(30) Priority: 24.03.1987 JP 42022/87 U

(71) Applicant: SANDEN CORPORATION
Isesaki-shi Gunma, 372 (JP)

(72) Inventors:
  • Kobayashi, Hideto
    Isesaki-shi Gunma, 372 (JP)
  • Terauchi, Kiyoshi
    Isesaki-shi Gunma, 372 (JP)

(74) Representative: Prüfer, Lutz H., Dipl.-Phys. 
Harthauser Strasse 25d
81545 München
81545 München (DE)


(56) References cited: : 
   
       


    (54) Wobble plate type compressor with variable displacement mechanism


    (57) A reciprocating piston type refrigerant compressor (1) includes a compressor housing (10) having a cylinder block (101) provided with a plurality of cylinders (32) and a crank chamber (13) adjacent to the cylinder block (101). A piston (33) slides within each cylinder (32) and is reciprocated by a wobble plate (17) driven by a cam rotor (14) mounted on a drive shaft (12). The cam rotor (14) includes an adjustable slant angle in close proximity to the wobble plate (17). Accordingly, the stroke of the pistons (33) within the cylinders (32) can be changed by adjusting the slant angle of the sloping surface. The slant angle of the sloping surface is adjusted in response to the change of pressure in the crank chamber (13). The crank chamber (13) communicates with the suction chamber (35) through a passageway and a valve control mechanism (46) controls the opening and closing of the passageway. Thus, the capacity of the compressor (1) can be adjusted by changing the slant angle of the sloping surface of the slant plate (16) in response to the operation of the valve control mechanism (46).







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