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Title:
COMPRESSION CAPACITY SWITCHING MECHANISM IN VARIABLE CAPACITY SWASH PLATE TYPE COMPRESSOR
Document Type and Number:
Japanese Patent JPS627983
Kind Code:
A
Abstract:

PURPOSE: To switch capacity in a moment by switching the acting pressure applied into a pressure acting chamber by a control valve operated by the pressure difference between before and behind the throttle part of a suction conduit, thus preventing the erroneous operation due to the external cause such as sharp variation of engine revolution.

CONSTITUTION: In a large-diameter part 39a formed onto a control valve F, a spool valve 42 is installed, holding a pair of pressure chambers 43 and 44. A pressure acting chamber 25 is connected to a discharge conduit 31 and a suction conduit 32 through sealing valves 48 and 48. These sealing valves 48 and 48 are opening/closing-operated by the small-diameter rods 42b and 42b extended from the spool valve 42. Each pressure before and behind a throttle part E formed in the suction conduit 32 is introduced into the pressure chambers 43 and 43, and the spool valve 42 is shifted by the pressure difference.


Inventors:
Kawai, Katsunori
Kobayashi, Hisao
Deguchi, Hiroyuki
Sugisono, Shuichi
Application Number:
JP1985000145399
Publication Date:
January 14, 1987
Filing Date:
July 02, 1985
Export Citation:
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Assignee:
TOYODA AUTOM LOOM WORKS LTD
International Classes:
F04B27/14; F04B25/04; F04B49/24; (IPC1-7): F04B1/14; F04B25/04