US-12624689-B1 - Modular piezoelectric ceramic pump

Abstract

The present invention provides a modular piezoelectric ceramic pump comprising a casing with an air inlet port and an air outlet port, and pump core components, wherein more than two pump core components are provided and stacked in the casing; in each pump core component, a conducting component is connected to a piezoelectric ceramic plate connected to an external power supply driving the piezoelectric ceramic plate to vibrate, thereby driving gas to flow into an air cavity and to be discharged from the air cavity; the air inlet port is connected to the air inlet of the top pump core component, and the air outlet port is connected to the air outlet of the bottom pump core component. Different numbers of pump core components can be assembled according to required output pressure of a pump body or required range of flow rate to provide greater transmission power.

Inventors

• Guoping TONG

Assignees

• Foshan SD Technology Co., Ltd.

Dates

Publication Date

20260512

Application Date

20241216

Priority Date

20241108

Claims (7)

1. 1 . A modular piezoelectric ceramic pump, characterized by comprising a casing provided with an air inlet port and an air outlet port, and pump core components arranged in the casing; wherein each of the pump core components comprises a pump core support ( 21 ), a conducting component ( 22 ), a piezoelectric ceramic plate ( 23 ), an air inlet valve body plate ( 24 ), and an air outlet valve body plate ( 25 ); the piezoelectric ceramic plate ( 23 ), the air inlet valve body plate ( 24 ), and the air outlet valve body plate ( 25 ) are stacked in sequence, so that an air cavity is formed between the piezoelectric ceramic plate ( 23 ) and the air outlet valve body plate ( 25 ); the air inlet valve body plate ( 24 ) is provided with an air inlet ( 26 ), and the air outlet valve body plate ( 25 ) is provided with an air outlet ( 27 ); more than two of the pump core components are provided and stacked in the casing, and the orientations of the air inlet ( 26 ) and the air outlet ( 27 ) of each of the pump core component are the same; in each of the pump core components the respective conducting component ( 22 ) is electrically connected to the respective piezoelectric ceramic plate ( 23 ); an external power supply is connected to the respective piezoelectric ceramic plate ( 23 ) of each of the pump core components through the respective conducting component ( 22 ) of each of the pump core components; the external power supply drives each of the piezoelectric ceramic plates ( 23 ) to vibrate, thereby driving gas to flow into each of the air cavities through the air inlet ( 26 ) and driving the gas to be discharged from each of the air cavities through the air outlet ( 27 ); the air inlet port is connected to the air inlet ( 26 ) of a top pump core component of the more than two pump core components, and the air outlet port is connected to the air outlet ( 27 ) of a bottom pump core component of the more than two pump components; further characterized in that, in each of the pump core components, that a through hole is formed in a middle of the respective air inlet valve body plate ( 24 ); the respective piezoelectric ceramic plate ( 23 ) covers the respective through hole; the respective air inlet ( 26 ) is arranged around a periphery of a coverage area of the respective piezoelectric ceramic plate ( 23 ) further characterized in that, in each of the pump core components, a raised portion is arranged in the middle of the respective air inlet valve body plate ( 24 ), and the respective through hole and/or the respective air inlet ( 26 ) is formed in the raised portion further characterized in that, in each of the pump core components, the rigidity of the raised portion of the respective air inlet valve body plate ( 24 ) is smaller than a rigidity of the peripheral area of the respective air inlet valve body plate ( 24 ).
2. 2 . The modular piezoelectric ceramic pump according to claim 1 , further characterized in that the casing comprises an upper casing ( 11 ) and a lower casing ( 12 ); a shape of each of the pump core supports ( 21 ) is adapted to the shape of the casing; the pump core components are stacked and sandwiched between the upper casing ( 11 ) and the lower casing ( 12 ); adjacent pump core components of the more than two pump core components are abutted against each other via the respective pump core support ( 21 ) to form a sealed connection; the pump core component adjacent to the upper casing ( 11 ) is abutted against a lower end surface of the upper casing ( 11 ) via the respective pump core support ( 21 ) to form the sealed connection; the pump core component adjacent to the lower casing ( 12 ) is abutted against an upper end surface of the lower casing ( 12 ) via the respective pump core support ( 21 ) to form the sealed connection.
3. 3 . The modular piezoelectric ceramic pump according to claim 1 , further characterized in that, in each of the pump core components the respective air inlet valve body plate ( 24 ) is flexibly connected to the respective pump core support ( 21 ) or the respective air outlet valve body plate ( 25 ).
4. 4 . The modular piezoelectric ceramic pump according to claim 1 , further characterized in that, in each of the pump core components, the pump core support ( 21 ) is provided with a conducting through hole, and the respective conducting component ( 22 ) penetrates the respective conducting through hole and is flexibly connected to the respective piezoelectric ceramic plate ( 23 ).
5. 5 . The modular piezoelectric ceramic pump according to claim 4 , further characterized in that, in each of the pump core components, the respective conducting component ( 22 ) and the respective conducting through hole are flexibly matched.
6. 6 . The modular piezoelectric ceramic pump according to claim 1 , further characterized in that, in each of the pump core components, the respective air inlet valve body plate ( 24 ) is made of a conducting material, and the respective conducting component ( 22 ) is electrically connected to the respective piezoelectric ceramic plate ( 23 ) by being connected to the respective air inlet valve body plate ( 24 ).
7. 7 . The modular piezoelectric ceramic pump according to claim 1 , further characterized in that the casing is a metal casing.

Description

REFERENCE TO PRIOR APPLICATION This application claims priority to Chinese Patent Application 202422719593.9, filed on Nov. 8, 2024, which is incorporated herein by reference. TECHNICAL FIELD The present invention belongs to the technical field of air pumps, and more specifically, particularly relates to a modular piezoelectric ceramic pump. BACKGROUND As the requirements for pump body usage scenarios by people become higher and higher, piezoelectric ceramic pumps with advantages of small volume and low noise are gradually being widely used in home appliances and personal care products. However, since the traditional piezoelectric ceramic pumps adopt single-layer laminated ceramic structures, and the air outlet pressure and air outlet flow rate are generally small, the traditional piezoelectric ceramic pumps are difficult to be widely used in scenarios where the requirement on pump body output power is high and the pump operating power adjustment range is wide. It is usually necessary to configure pump structures of different sizes and shapes based on different application scenarios. Therefore, providing a piezoelectric ceramic pump that can be applied to high power requirements and can adapt to the power adjustment range is a problem that urgently needs to be solved in the field. SUMMARY In order to solve the aforementioned technical problems, the present invention provides a modular piezoelectric ceramic pump to solve the problems in the prior art that the piezoelectric ceramic pumps are low in air outlet pressure and small in air flow and cannot meet the needs of a wide range of power adjustment. The purpose and effect of the modular piezoelectric ceramic pump of the present invention are achieved by the following specific technical means: A modular piezoelectric ceramic pump comprises a casing provided with an air inlet port and an air outlet port, and pump core components arranged in the casing, wherein each pump core component comprises a pump core support, a conducting component, a piezoelectric ceramic plate, an air inlet valve body plate, and an air outlet valve body plate; the piezoelectric ceramic plate, the air inlet valve body plate, and the air outlet valve body plate are stacked in sequence, so that an air cavity is formed between the piezoelectric ceramic plate and the air outlet valve body plate; the air inlet valve body plate is provided with an air inlet, and the air outlet valve body plate is provided with an air outlet; more than two pump core components are provided and stacked in the casing, and the orientations of the air inlet and the air outlet of each pump core component are the same; the conducting component is electrically connected to the piezoelectric ceramic plate; the piezoelectric ceramic plate is connected to an external power supply through the conducting component; the external power supply drives the piezoelectric ceramic plate to vibrate, thereby driving gas to flow into an air cavity through an air inlet and to be discharged from the air cavity through an air outlet; the air inlet port is connected to the air inlet of the top pump core component, and the air outlet port is connected to the air outlet of the bottom pump core component. Compared with the prior art, the present invention has the following beneficial effects: due to the modular design of the pump core components, in different application scenarios, different numbers of pump core components can be selectively assembled according to required output pressure and flow of a pump body and required range of power adjustment. The modular piezoelectric ceramic pump has the advantages of wide application range and simplicity. Further, the casing comprises an upper casing and a lower casing; the shape of the pump core support is adapted to the shape of the casing; the pump core components are stacked and sandwiched between the upper casing and the lower casing; adjacent pump core components are abutted against each other via the pump core support to form a sealed connection; the pump core component adjacent to the upper casing is abutted against the lower end surface of the upper casing via the pump core support to form a sealed connection; the pump core component adjacent to the lower casing is abutted against the upper end surface of the lower casing via the pump core support to form a sealed connection. The matching structure of the upper casing and the lower casing can realize the assembly of other pump core components by welding, gluing and the like, and the structure is simple and has high adaptability. Further, a through hole is formed in the middle of the air inlet valve body plate; the piezoelectric ceramic plate covers the through hole; the air inlet is arranged around the periphery of the coverage area of the piezoelectric ceramic plate. The arrangement of a through hole structure enables the pump core component to have a larger air cavity with the same volume. Further, the air inlet valve body plate is f