Fluid transportation device

Patent metadata

Field	Value
Publication number	US-10704544-B2
Application number	US-201815875469-A
Country	US
Kind code	B2
Filing date	Jan 19, 2018
Priority date	Jan 20, 2017
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A fluid transportation device for transportation fluid comprises a valve main body, a valve chamber base, a valve membrane, an actuator and a cover body, and locked and positioned by several locking elements, the electrically conductive locking elements are correspondingly penetrated through the penetration holes of the valve main body, the valve chamber base and the vibration plate of the valve membrane to lock with the corresponding screw holes, and a plurality of thread grooves respectively disposed on the vibration plate, the valve main body and the valve chamber base are corresponding to two thread grooves of the cover body, and an electrode lead of the piezoelectric element is embedded into the two thread grooves of the cover body and embedded into the thread grooves of the vibration plate, valve main body and the valve chamber base, so that the fluid transportation device is assembled.

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;
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 valve membrane having two valve plates, wherein a plurality of extension brackets are disposed around peripheries of the valve plates to provide elastic support, a hollow hole is formed between each two of the adjacent extension brackets, and the inlet valve passage and the outlet valve passage of the valve chamber base are correspondingly closed by the valve plates within two penetration regions of the valve membrane, in which each of the valve plates forms a valve switch structure;
an actuator assembled by a vibration plate and a piezoelectric element, wherein the vibration plate has a first surface and an opposing second surface, the piezoelectric element is attached on the first surface of the vibration plate, and the second surface of the vibration plate covers the compressible chamber of the valve chamber base, wherein a plurality of penetration holes and a plurality of opening portions are disposed on the vibration plate where a plurality of electrically conductive locking elements are penetrating through and be contacted therein, so that the locking elements are serving as a plurality of electrode leads of the vibration plate and the conductive area of the vibration plate is increased, wherein the piezoelectric element has an electrode lead;
a cover body made of a metal, covering the vibration plate of the actuator and in contact with the vibration plate by a large area, wherein a plurality of screw holes are penetrated through the cover body, and two lead grooves are recessed respectively on two perpendicular surfaces of the cover body that are vertically communicated with each other;
wherein the valve main body, the valve chamber base and the vibration plate respectively have a plurality of penetration holes in which the corresponding penetration holes are aligned with each other and corresponding to the screw holes of the cover body, the electrically conductive locking elements are correspondingly penetrated through the penetration holes to be locked with the corresponding screw holes, and a plurality of lead grooves respectively disposed on the vibration plate, the valve main body and the valve chamber base are corresponding to the two lead grooves of the cover body, and the electrode lead of the piezoelectric element is embedded into the two lead grooves of the cover body and embedded into the lead grooves of the vibration plate, valve main body and the valve chamber base, 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 seal ring to prevent fluid leakage.

4. The fluid transportation device according to claim 1 , wherein a plurality of latch grooves are disposed on the first assembling surface of the valve main body, a plurality of posts are disposed on the second assembling surface of the valve chamber base, and the posts are correspondingly accommodated within the latch grooves of the valve main body, so that the valve chamber base is positioned on the valve main body, wherein a plurality of positioning holes are disposed on the valve membrane corresponding to the posts of the valve chamber base, so that each of the posts is penetrated through corresponding positioned hole on the valve membrane, and the inlet valve passage and the outlet valve passage of the valve chamber base are correspondingly closed by the valve plates of the valve membrane, in which each of the valve plates forms the valve switch structures.

5. The fluid transportation device according to claim 1 , wherein the locking elements are screws.

Assignees

• Microjet Technology Co Ltd

Inventors

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

Classifications

• F04B43/046 Primary

  with piezoelectric drive · CPC title

• H10N30/20

  with electrical input and mechanical output, e.g. functioning as actuators or vibrators · CPC title

• F04B17/003

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

• F04B53/106

  the valve being a membrane · CPC title

• F04B19/006

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