(19)
(11) EP 2 096 314 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.09.2010 Bulletin 2010/36

(43) Date of publication A2:
02.09.2009 Bulletin 2009/36

(21) Application number: 08250657.7

(22) Date of filing: 27.02.2008
(51) International Patent Classification (IPC): 
F04C 18/08(2006.01)
F04C 28/12(2006.01)
 F04C 18/16(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 18.12.2007 TW 96221510 U

(71) Applicant: Hanbell Precise Machinery Co., Ltd.
Tao-Yuan Hsien, Taiwan (CN)

(72) Inventor:
  • Lee, Chun-Tsung
    Tao-Yuan Hsien Taiwan (CN)

(74) Representative: Tranter, Andrew David 
Barker Brettell LLP 138 Hagley Road
Edgbaston Birmingham, West Midlands B16 9PW
Edgbaston Birmingham, West Midlands B16 9PW (GB)

   


(54) Volume regulating structure for rotary helical screw compressors


(57) A volume regulating structure for a rotary helical screw compressor includes a housing, a male-female rotor pair, a slide valve, and an extending support. The housing is provided, inside, with a rotor chamber and a slide valve chamber which are opening at the discharge surface of the housing. The extending support is fixed on the discharge surface of the housing, and that an inner profile of the extending support is aligned with two lower-half arcs of an opening profile of the slide valve chamber. Accordingly, part of the slide valve moved out of the housing can be supported by the extending support so as to reduce shocking of the slide valve effectively.







Search report