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Patent Searching and Data


Title:
VARIABLE CAPACITY COMPRESSOR
Document Type and Number:
Japanese Patent JPS61286591
Kind Code:
A
Abstract:

PURPOSE: To keep pressure in the crank chamber of a variable capacity compressor always at a predetermined level for good response and improve the controllability of capacity by letting said pressure control each open/close valve at a passage between the crank chamber and the delivery chamber, and between the crank chamber and the suction chamber.

CONSTITUTION: A primary open/close valve 34 is provided at an air feed passage 35 between the crank chamber 7 of a variable capacity compressor used for the airconditioning of vehicles and the like, and the delivery chamber 5 thereof. Also, a secondary open/close valve 39 is provided at a bleed passage 40 between the crank chamber 7 and the suction chamber 4 of said compressor. Both of said valves 34 and 49 are controlled for opening and closing by a single actuating lever 25 through the application of pressure in the crank chamber 7 to a bellows 34. And the opening and closing control is so made that the primary open/close valve 34 opens and the opening of the secondary open/close valve 39 is throttled, when pressure in the crank chamber 7 is equal or below a predetermined level. On the contrary, when said pressure is above the predetermined level, the primary open/close valve 34 closes and the opening of the secondary open/close valve 39 is made wide.


Inventors:
Oota, Masaki
Takenaka, Kenji
Application Number:
JP1985000129362
Publication Date:
December 17, 1986
Filing Date:
June 13, 1985
Export Citation:
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Assignee:
TOYODA AUTOM LOOM WORKS LTD
International Classes:
F04B27/14; F04B1/14; F04B25/04; (IPC1-7): F04B1/14; F04B25/04