Asymmetric dual diaphragm pump
First Claim
Patent Images
1. A micro pump comprising:
- a chamber having a chamber midline;
a first surface including a first portion extending at a first acute angle with respect to the chamber midline;
a second surface opposite the first surface, the second surface including a second portion extending at a second acute angle with respect to the chamber midline;
a first diaphragm disposed within the chamber, at least one first aperture disposed within the first diaphragm; and
a second diaphragm disposed within the chamber, at least one second aperture disposed with the second diaphragm;
wherein the second angle is less than the first angle when the first angle and the second angle are measured at a common lateral position along the chamber midline.
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Abstract
An asymmetric micro pump may be adapted to provide a greater fluid compression between input and output ports of the micro pump, as well as increased flow rate due to higher actuation frequency. In some instances, asymmetric dual diaphragm micro pumps may be combined into assemblies to provide increased pressure build, improved pumping volume, or both, as desired.
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Citations
16 Claims
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1. A micro pump comprising:
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a chamber having a chamber midline; a first surface including a first portion extending at a first acute angle with respect to the chamber midline; a second surface opposite the first surface, the second surface including a second portion extending at a second acute angle with respect to the chamber midline; a first diaphragm disposed within the chamber, at least one first aperture disposed within the first diaphragm; and a second diaphragm disposed within the chamber, at least one second aperture disposed with the second diaphragm; wherein the second angle is less than the first angle when the first angle and the second angle are measured at a common lateral position along the chamber midline. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vertical stack micro pump array comprising:
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a first dual diaphragm chamber comprising; a first angled upper surface having a first input port; an opposing first angled lower surface having a first output port, wherein the first angled upper surface is situated at a different relative angle, measured at a common lateral position, than the opposing first angled lower surface; and a first dual diaphragm comprising a first upper diaphragm and a first lower diaphragm; and a second dual diaphragm chamber comprising; a second angled upper surface having a second input port; an opposing second angled lower surface having a second output port, wherein the second angled upper surface is situated at a different relative angle, measured at a common lateral position, than the opposing second angled lower surface; and a second dual diaphragm comprising a second upper diaphragm and a second lower diaphragm; wherein the second input port is in fluid communication with the first output port. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification