Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
EXTRA-HIGH PRESSURE CONTROLLER
Document Type and Number:
Japanese Patent JP3019671
Kind Code:
B2
Abstract:

PURPOSE: To reduce fluctuation of delivery hydraulic pressure sufficiently without using an accumulator for superhigh pressure so as to enhance the performance and life of hydraulic equipment such as a booster by connecting two boosters in parallel with each other, and subjecting the boosters to phase difference control using two switching valves.
CONSTITUTION: A first and second booster 2, wherein water sucked into water- compressing plunger chambers 3a, 3b is compressed by the reciprocating movements of hydraulic cylinders 6a, 6b and then delivered to a water delivery line 8, are provided. After a second switch means 10 is switched from a suction position to a pre- compression position in accordance with the output of a first stroke sensor 30' under the compression stroke of the first booster 1, a first switch means 9 is switched from a compression position to the suction position and the second switch means 10 from the pre-compression position to the suction position in accordance with the output of a second stroke sensor 29. (on the side of the second booster 2 the switch means 9, 10 are switched reversely). Thus the first booster 1 is shifted from the compression stroke to the suction stroke whereas the second booster 2 is shifted from the pre- compression stroke to the compression stroke, whereby the water can be delivered at a reduced fluctuation rate.


Inventors:
Yoshio Tanino
Feather Hiro Takuichi
Takaaki Noda
Kouichi Hayashi
Application Number:
JP17417493A
Publication Date:
March 13, 2000
Filing Date:
July 14, 1993
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Daikin Industries, Ltd.
International Classes:
F04B9/117; F15B3/00; B26F3/00; (IPC1-7): B26F3/00; F04B9/109; F04B9/117; F15B3/00
Domestic Patent References:
JP6339799A
JP5027189A
JP6330851A
JP63158588U
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)