Fluid transportation device

Patent metadata

Field	Value
Publication number	US-10662938-B2
Application number	US-201815875219-A
Country	US
Kind code	B2
Filing date	Jan 19, 2018
Priority date	Jan 20, 2017
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

A fluid transportation device comprises a valve main body, a valve chamber base, a valve membrane, an actuator and a cover body. The valve main body comprises an inlet passage and an outlet passage. The valve chamber base comprises an inlet valve passage, an outlet valve passage and a compressible chamber communicating therewith. The valve membrane is arranged between the valve main body and the valve chamber base, having two valve plates respectively form a valve switch structure which seal the inlet valve passage and the outlet valve passage. The actuator covers the compressible chamber. The cover body covers the actuator and has a plurality of screw holes, which are corresponding to the penetration holes of the valve main body, the valve chamber base and the actuator, and several locking elements are inserting the penetration holes and locked with the screw holes to assemble the fluid transportation device.

First claim

What is claimed is:

1. A fluid transportation device for transporting a fluid, comprising:
a valve main body having a first assembling surface, comprising an inlet passage and an outlet passage respectively communicated with an inlet opening and an outlet opening on the first assembling surface, and a plurality of latch grooves are disposed on the first assembling surface;
a valve chamber base having a second assembling surface and a third assembling surface, comprising an inlet valve passage and an outlet valve passage, wherein the inlet valve passage and the outlet valve passage are penetrating through the second assembling surface and the third assembling surface, the third assembling surface is partially sunken to form a compressible chamber which is communicated with the inlet valve passage and the outlet valve passage, a plurality of posts are protruding from the second assembling surface and correspondingly accommodated within the latch grooves of the valve main body, so that the valve chamber base is positioned on the valve main body;
a valve membrane, which is a plane and slim sheet structure having two penetration regions each of which is etched to form a valve plate and the two valve plates have the same thickness, wherein a plurality of extension brackets are disposed around the periphery of each of the valve plates to provide elastic support, and a hollow hole is formed between each two of the adjacent extension brackets, so that each of the valve plates deforms in a deformable displacement while enduring a force by which a valve switch structure is formed, wherein the valve membrane is disposed between the valve main body and the valve chamber base, having a plurality of positioning holes each of which is corresponding to one of the posts on the valve chamber base, so that the posts are penetrating through the positioning holes of the valve membrane to position the valve membrane, and the inlet valve passage and the outlet valve passage of the valve chamber base are closed by corresponding valve switch structures formed by the valve plates within the two penetration regions;
an actuator covering the compressible chamber of the valve chamber base;
a cover body covering the actuator and having a plurality of screw holes penetrating through the cover body;
a plurality of lead grooves, wherein two of the lead grooves are recessed respectively on two perpendicular surfaces of the cover body and are vertically communicated with each other, wherein each of the other lead grooves is disposed on a side surface of the actuator, the valve chamber base and the valve main body, wherein an electrode lead of the actuator is embedded into the lead grooves,
wherein each of the valve main body and the valve chamber base has a plurality of penetration holes, and the actuator has a plurality of through holes, the penetration holes and the through holes are respectively corresponding to the screw holes of the cover body, and a plurality of electrically conductive locking elements are correspondingly penetrating through the penetration holes of the valve main body, the penetration holes of the valve chamber base and the through holes of the actuator, and locked with the corresponding screw holes, so that the fluid transportation device is assembled.

2. The fluid transportation device according to claim 1 , wherein a protruded structure is disposed on each of a periphery of the outlet opening of the valve main body and a periphery of the inlet valve passage of the valve chamber base, the valve plates within the two penetration regions of the valve membrane are operable to abut against the protruded structures by which a prestress is produced to make the valve plates seal tighter to prevent backflow.

3. The fluid transportation device according to claim 1 , wherein a concave groove is disposed on each of the peripheries of the inlet opening and the outlet opening of the valve main body, the peripheries of the inlet valve passage and the outlet valve passage on the second assembling surface of the valve chamber base, and a periphery of the compressible chamber on the third assembling surface, for disposing a plural seal rings to prevent fluid leakage.

4. The fluid transportation device according to claim 3 , wherein the valve membrane is made of polyimide polymer material.

5. The fluid transportation device according to claim 4 , wherein the thickness of the valve membrane is 50 micrometers, the diameter of the valve plate is 17 millimeters, and the width of the extension bracket is 100 micrometers.

6. The fluid transportation device according to claim 5 , wherein the actuator is assembled by a vibration plate and a piezoelectric element attached on a surface of the vibration plate, the vibration plate has an opening portion where one of the locking elements is penetrating through and in contact with the vibration plate, and the one of the locking elements is serving as an electrode lead of the vibration plate.

7. The fluid transportation device according to claim 6 , wherein the cover body is made of a metal, the cover body is in contact with the vibration plate by a large area, and the locking elements are penetrating through the through holes of the actuator which are formed on the vibration plate and the opening portion of the vibration plate, and locked with the screw hole, thereby increasing the electrically conductive area of the vibration plate.

8. The fluid transportation device according to claim 1 , wherein the locking element is a screw.

Assignees

• Microjet Technology Co Ltd

Inventors

• Liao jia-yu
• Chen Shih-Chang
• Huang Chi-Feng
• Han Yung-Lung

Classifications

• F04B19/006

  Micropumps (F04B43/043 and F04B43/095 take precedence) · CPC title

• F04B53/106

  the valve being a membrane · CPC title

• F04B17/003

  driven by piezoelectric means (F04B43/046 and F04B43/095 take precedence) · CPC title

• F04B43/028

  with in- or outlet valve arranged in the plate-like flexible member (valve arranged in the piston F04B53/12) · CPC title

• F04B43/046 Primary

  with piezoelectric drive · CPC title