Fluidic device
AssigneeHitachi Industrial Equipment System Co., Ltd.
InventorsHiroshi Mukai, Keiichi Honma, Takeshi Honda, Tetsuo Kimiya
Life of this patent
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Abstract
For achieving a fluidic device, being able to be made small in sizes, comprising a fluid inflow opening 1, a connector duct 2, and a fluid jet nozzle, wherein the connector duct 2 is constructed with curves, and is further constructed with two (2) pieces of flow passages, being symmetric on both sides. Constructing the connector duct with the curves reduces resistance of fluid within the duct, and further dividing the connector duct into two (2) parts in both side enhances the flows at confluent point in the duct (increase of the flow velocity).
Claims20
A fluidic device, comprising:
- a fluid inflow opening;
- a connector duct;
- and
- a fluid jet nozzle portion, wherein fluid flow within said connector duct is driven by a pressure difference at said fluid jet nozzle portion, said pressure difference being reversed as a result of fluid flow, and again being driven, thereby oscillating, and further said connector duct is constructed with curved surfaces delimiting two pieces of flow passages that are symmetric with respect to each other;
- wherein said two pieces of flow passages are joined at a joining portion of said connector duct, so as to increase the velocity of the fluid flowing out of said fluid jet nozzle portion.
A fluidic device, comprising:
- a fluid flow opening;
- a connector duct;
- and
- a fluid jet nozzle portion, wherein fluid flow within said connector duct is driven by a pressure difference at said fluid jet nozzle portion, said pressure difference being reversed as a result of fluid flow, and again being driven, thereby oscillating, and further said connector duct is constructed with a plural number of flow passages;
- wherein said connector duct is made of curved surfaces delimiting two pieces of flow passages, being symmetric with each other, and said fluid inflow opening and said fluid jet nozzle portion are disposed in a center between said two pieces of flow passages;
- and
- wherein said two pieces of flow passages are joined at a joining portion of said connector duct, so as to increase the velocity of the fluid flowing out of said fluid jet nozzle portion.
Dependencies are inferred from the claim text.