Title:
SCROLL FLUID MACHINE
Document Type and Number:
Japanese Patent JPS58172401
Kind Code:
A
Abstract:
PURPOSE:To easily further surely obtain pressing force of a turning scroll to a fixed scroll, by communicating the delivery side of a scroll compressive element part to a back pressure chamber provided to the back side of a turning scroll through an accumulative air tank with an oil separator and a pressure reducing valve. CONSTITUTION:A fixed scroll 1 comprises an end plate 1a and a lap 1b and is fixed to a casing 7, while a turning scroll 2 comprises an end plate 2a and a lap 2b and its boss part 2c is rotatably supported to the point end of a main shaft 3 through a bearing 4c. Then said both laps 1b, 2b are mutually combined. Here an accumulative air tank 8 with a built-in oil separator 9 is communicated to a delivery hole 1c of the scroll 1 through the first delivery pressure line 11. Then the second delivery pressure line 12 and a back pressure line 13 equipped with a pressure reducing valve 10 communicated to a back pressure chamber 6 are connected to the separator 9. In this way, the scroll 2 is pressed to the scroll 1 by pressure in the tank 8.
Inventors:
NAYA KOUTAROU
NAKAMURA YOUZOU
NAKAMURA YOUZOU
Application Number:
JP5383082A
Publication Date:
October 11, 1983
Filing Date:
April 02, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F04C18/02; F01C1/02; F01C21/04; F04C27/00; F04C29/04; (IPC1-7): F01C1/02; F01C21/04; F04C18/02; F04C29/02
Attorney, Agent or Firm:
Toshiyuki Usuda