Piezoelectric motor having a main body structured as a polygonal prism

Patent metadata

Field	Value
Publication number	US-11530696-B2
Application number	US-201815860903-A
Country	US
Kind code	B2
Filing date	Jan 3, 2018
Priority date	Jan 13, 2017
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

An air motor is provided for converting electrical energy into kinetic energy, and using the kinetic energy to generate a specified air pressure and a specified airflow rate. The air motor comprises plural air motor units, each of which includes a main body and a piezoelectric actuator. The piezoelectric actuator is disposed within the main body. When the piezoelectric actuator is enabled, the air within the main body is controlled and driven to flow. The air motor can be used to replace various types of motors, compressors or engines.

First claim

What is claimed is:

1. An air motor for converting electrical energy into kinetic energy and using the kinetic energy to generate a specified air pressure and an air flow at a specified airflow rate, the air motor comprising:
a main body comprising at least one unit structure; and
a piezoelectric actuator disposed within the main body and comprising:
a suspension plate, wherein the suspension plate is a square plate and has a length in a range between 0.6 mm and 1 m, a width in a range between 0.6 mm and 1 m, and a thickness in a range between 0.1 nm and 1 m,
an outer frame having at least one bracket connected to the suspension plate; and
a piezoelectric plate attached on a first surface of the suspension plate, wherein the piezoelectric plate is a square plate and does not extend over the suspension plate, wherein the piezoelectric plate has a length in a range between 0.6 mm and 1 m, a width in a range between 0.6 mm and 1 m, and a thickness in a range between 0.1 nm and 50 mm,

wherein the first surface of the suspension plate, a first surface of the outer frame and a first surface of the at least one bracket are coplanar with each other, and a second surface of the suspension plate, a second surface of the outer frame and a second surface of the at least one bracket are coplanar with each other,
wherein the specified air pressure is in a range between 10 mmHg and 10000 mmHg, and the specified airflow rate is in a range between 0.1 liter/min and 1000 liter/min, and
wherein when the piezoelectric actuator is enabled, air within the main body is controlled and driven to flow, wherein the air motor is applicable to replace various types of motors, compressors or engines,
wherein the main body is a combination of a gas inlet plate and a gas collecting plate, wherein the gas collecting plate comprises a bottom plate and a sidewall protruding from the edges of the bottom plate, and an accommodation space is defined by the bottom plate and the sidewall collaboratively, wherein the piezoelectric actuator and the gas inlet plate are disposed within the accommodation space.

2. The air motor according to claim 1 , wherein the at least one unit structure is a polygonal prism or a cylinder.

3. The air motor according to claim 2 , wherein the at least one unit structure is the polygonal prism.

4. The air motor according to claim 2 , wherein the polygonal prism is a triangular prism, a square prism, a rectangular prism, a rhombic prism, a pentagonal prism, a hexagonal prism, an octagonal prism, a dodecagonal prism or an irregular polygonal prism.

5. The air motor according to claim 4 , wherein the triangular prism is a regular triangular prism, an obtuse triangular prism or an acute triangular prism.

6. The air motor according to claim 2 , wherein the cylinder is a circular cylinder with a hemispherical end, an elliptic cylinder or an irregular cylinder.

7. The air motor according to claim 1 , wherein the at least one unit structure is a polygonal pyramid or a cone.

8. The air motor according to claim 7 , wherein the at least one unit structure is the polygonal pyramid having a base and an apex, and the sizes of the surface areas of the base and the apex are different.

9. The air motor according to claim 7 , wherein the polygonal pyramid is a triangular pyramid, a square pyramid, a rectangular pyramid, a rhombic pyramid, a pentagonal pyramid, a hexagonal pyramid, an octagonal pyramid, a dodecagonal pyramid or an irregular polygonal pyramid.

10. The air motor according to claim 9 , wherein the triangular pyramid is a regular triangular pyramid, an obtuse triangular pyramid or an acute triangular pyramid.

11. The air motor according to claim 7 , wherein the cone is a circular cone with a hemispherical end, an elliptic cone or an irregular cone.

12. The air motor according to claim 1 , wherein the at least one unit structure and adjacent unit structures are connected with each other in series, in parallel or in series/parallel or stacked on each other so as to form a combination structure affecting the air pressure and the airflow rate.

13. The air motor according to claim 12 , wherein the combination structure is an assembly structure comprising the at least one unit structure and the adjacent unit structures connected to each other in a specified arrangement, wherein the specified arrangement includes one of a linear arrangement, an array arrangement and a ring-shaped arrangement.

14. The air motor according to claim 1 , wherein the length of the suspension plate is in a range between 2 cm and 20 cm, the width of the suspension plate is in a range between 2 cm and 20 cm, and the thickness of the suspension plate is in a range between 2 cm and 20 cm.

15. The air motor according to claim 1 , wherein the air motor further comprises a resonance plate, wherein the gas inlet plate, the resonance plate, the piezoelectric actuator and the gas collecting plate are stacked on each other sequentially, a gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber, and a gas-collecting chamber is formed between the piezoelectric actuator and the gas collecting plate, wherein when the piezoelectric actuator is enabled, air is fed into the gas inlet plate, transferred through the resonance plate to the first chamber, and downwardly transferred to the gas-collecting chamber.

Assignees

• Microjet Technology Co Ltd

Inventors

• Mou Hao-Jan
• Han Yung-Lung
• Huang Chi-Feng

Classifications

• F04B43/046

  with piezoelectric drive · CPC title

• F04B45/10

  having plate-like flexible members · CPC title

• F04B41/06

  Combinations of two or more pumps · CPC title

• F04B53/16

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title

• F04B45/047 Primary

  Pumps having electric drive · CPC title