Fluid transferring system and micropump suitable therefor
AssigneeMinolta Co., Ltd.
InventorsKusunoki Higashino, Yasuhisa Fujii, Shunichi Hayamizu, Yasuhiro Sando
Life of this patent
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Abstract
Disclosed herein is a micro fluid transferring system that comprises a micropump having a chamber, a first fluid transferring portion connected to the chamber, and a second fluid transferring portion connected to the chamber. This system is characterized in that at least one of the first and second fluid transferring portions comprises a pressure absorbing section for absorbing or alleviating a liquid vibrational pressure therein.
Claims18
-16. (canceled)
A fluid transferring system comprising a plurality of micropumps arranged in series with each other, each micropump being connected to a neighboring one of the plurality of micropumps through a connecting section of which a length is shorter than a half wavelength of a pressure compressional wave corresponding to a driving cycle of the micropumps.
A fluid transferring system comprising a plurality of micropumps arranged in series with each other, each micropump being connected to a neighboring one of the plurality of micropumps through a connecting section of which a length is not shorter ¼ times a wavelength of a pressure compressional wave corresponding to a driving cycle of the micropumps.
A micropump comprising:
- a chamber;
- a first opening section including a plurality of sub-opening sections, each of the sub-opening sections being for connecting the chamber with a first fluid transferring portion, the sub-opening sections having an effective sectional area smaller than that of the first fluid transferring portion and showing, as a whole, a first flow channel resistance that changes depending on change in differential pressure between the chamber and the first fluid transferring portion;
- and
- a second opening section for connecting the chamber with a second fluid transferring portion, the second opening section having an effective sectional area smaller than that of a the second fluid transferring portion, the second opening section showing a second flow channel resistance that changes depending on change in differential pressure between the chamber and the second fluid transferring portion,
- wherein the differential pressure dependency of the first flow channel resistance is smaller than that of the second flow channel resistance.
A fluid transferring system comprising:
- a chamber;
- a first opening section for connecting the chamber with a first fluid transferring portion, the first opening section having an effective sectional area smaller than that of the first fluid transferring portion and showing a first flow channel resistance that changes depending on change in differential pressure between the chamber and the first fluid transferring portion;
- a second opening section for connecting the chamber with a second fluid transferring portion, the second opening section having an effective sectional area smaller than that of a the second fluid transferring portion, the second opening section showing a second flow channel resistance that changes depending on change in differential pressure between the chamber and the second fluid transferring portion;
- and
- a third opening section for connecting the chamber with a third fluid transferring portion, the third opening section having an effective sectional area smaller than that of a the third fluid transferring portion, the third opening section showing a third flow channel resistance that changes depending on change in differential pressure between the chamber and the third fluid transferring portion,
- wherein the differential pressure dependency of the first flow channel resistance is different from those of the second and third flow channel resistances.
-32. (canceled)
A fluid transferring system comprising:
- a first micropump;
- a second micropump;
- a fluid transferring section having first and second head stream sections which are communicated with the first and the second micropumps, respectively, and which merge each other at a merging point,
- wherein the fluid transferring section further has a pressure absorbing section that is provided at at least one of the merging point, a middle point of the first head stream section, and a middle point of the second head stream section.
Dependencies are inferred from the claim text.