PURPOSE: To perform such an efficient fluid conveyance that is less in a reflected wave by supplying a medium, generating a proceeding wave along a flow passage, of a passage forming member transferring a fluid from a supplying means, and transmitting a wave of the medium to the fluid in making a flexible film body an interface.
CONSTITUTION: A double pipe structure 10 is constituted with an inner cylinder 15 and an outer cylinder 11, and a flow passage 17 of fluid being transferred in the inner cylinder and a clearance between inside and outside cylinders are set down to a medium passage 16, thereby generating a horizontal wave in the inner cylinder 15. An interface between both passages 16 and 17 is made up into a filmy form. A medium transfer pump 20 is installed in an upstream part of the outer cylinder 11, circulating a medium by a circulating passage 23. When the pump 20 is driven and flow velocity increases, a progressive wave in the same direction as a flow of the medium is produced there. A reflected wave being produced in a downstream side end 13 by the medium flow is negated, and a surface of the inner cylinder goes into a crawling motion through the progressive wave, thereby transferring the fluid in the same direction as the medium flow. Thus transfer efficiency of the fluid is well improved owing to a pumping action less in the reflected wave.
ARAI TORU
ISHIBASHI YOJI
MIZUNO TADASHI
