Piezoelectric ceramic micro pump body

Abstract

The utility model discloses a piezoelectric ceramic micro pump body, relates to the technical field of piezoelectric micro pumps, and aims to solve the problems that in the prior art, a cooling fan is arranged on a shell to serve as a cooling structure, a spring serves as a buffering mechanism, and the occupied space of a piezoelectric ceramic pump is increased; according to the technical scheme, the piezoelectric ceramic pump comprises a pump body and a pump shell, the pump body is arranged in the pump shell, the pump body comprises an FPC flat cable, a piezoelectric vibration valve plate upper cover plate, a valve plate body and a valve plate lower cover plate, the FPC flat cable is arranged on a piezoelectric vibrator, and the FPC flat cable is arranged on the piezoelectric vibrator. The piezoelectric vibrator is arranged at the upper end of the valve plate upper cover plate, the valve plate upper cover plate is arranged at the upper end of the valve plate main body, and the valve plate main body is arranged on the valve plate lower cover plate. The micro pump has the advantages that the piezoelectric vibrator, the valve plate upper cover plate, the valve plate main body, the valve plate lower cover plate and the pump shell are integrally formed through the FPC flat cable, so that the structure is compact; the number of structural layers is reduced, processing is more convenient, and the thickness is thinner.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric micro pumps, in particular to a piezoelectric ceramic micro pump body. Background Art

[0002] With the continuous advancement of technology, it is now common on the market to use liquid-cooled piezoelectric ceramic micropumps to dissipate heat from mobile phones. Piezoelectric ceramic pumps are micropumps made by utilizing the inverse piezoelectric effect of piezoelectric ceramics. They have no motor and no rotating parts. Chinese patent CN218118002U discloses a piezoelectric ceramic pump, including a piezoelectric ceramic pump body, with a first connecting pipe and a second connecting pipe connected to the two sides of the piezoelectric ceramic pump body, respectively. A mounting plate is provided on the rear side of the piezoelectric ceramic pump body, and buffer structures are provided on the left and right sides between the rear side of the piezoelectric ceramic pump body and the mounting plate. A heat dissipation structure is provided on the outer shell of the piezoelectric ceramic pump body. The buffer structure can effectively buffer the piezoelectric ceramic pump when it generates strong vibrations, thereby achieving the purpose of reducing the overall noise of the piezoelectric ceramic pump, thereby solving the problem of high operating noise in piezoelectric ceramic pumps in the prior art. At the same time, the heat dissipation structure can timely guide the heat inside the piezoelectric ceramic pump to the heat sink, and ultimately discharge the heat to the external environment through a fan to achieve the purpose of effective heat dissipation.

[0003] The above-mentioned prior art suffers from the following deficiencies: The prior art incorporates a cooling fan as a heat dissipation structure and a spring as a buffer mechanism on the housing, further increasing the space occupied by the piezoelectric ceramic pump. Furthermore, the first and second connecting pipes in the piezoelectric ceramic pump are oriented in opposite directions, making pipe arrangement difficult. Existing micropumps are constructed from multiple layers of thin sheets (formed by laser cutting or stamping) assembled together through welding or gluing processes. Traditional welding processes can easily cause deformation, reducing pump efficiency, while gluing processes lack long-term weather resistance. Therefore, a piezoelectric ceramic micropump body is provided to address these issues. Utility Model Content

[0004] In order to solve the problems in the above background technology, the technical solution adopted by the utility model to solve the technical problems is: a piezoelectric ceramic micro pump body, which includes: a pump body, the pump body includes an FPC cable, a piezoelectric vibrator, a valve upper cover plate, a valve main body, and a valve lower cover plate, the FPC cable is arranged on the piezoelectric vibrator, the piezoelectric vibrator is arranged on the upper end of the valve upper cover plate, the valve upper cover plate is arranged on the upper end of the valve main body, and the valve main body is arranged on the valve lower cover plate.

[0005] As a preferred technical solution of the present invention, a liquid outlet is provided on one side of the valve plate lower cover, and a liquid inlet is provided on the side of the valve plate lower cover close to the liquid inlet.

[0006] As a preferred technical solution of the present invention, a first valve disc is provided on the side of the valve disc body facing the liquid outlet, and a second valve disc is provided on the side of the valve disc body facing the liquid inlet.

[0007] As a preferred technical solution of the present invention, a water outlet is provided on the side of the valve plate upper cover facing the first valve plate, and a through opening is provided on the side of the valve plate upper cover facing the second valve plate.

[0008] The utility model has the following advantages: the utility micro pump adopts FPC wiring, piezoelectric vibrator, valve upper cover, valve body, valve lower cover and pump casing as an integral part, with compact structure, effectively reducing occupied space, and controls the opening and closing of the valve through the vibration of the piezoelectric valve, thereby causing the medium to move in one direction, and can adjust the opening and closing speed and size of the valve by controlling the voltage and frequency, and reduces the overall number of layers of the pump and the difficulty of processing by implementing different structures on the same valve.

[0009] The utility model adopts a special structural design to reduce the pump body structure layer by half through etching or photolithography process, and the laser welding process makes the precision of the structure more perfect, thereby achieving high-efficiency pump body performance, while increasing the water output per unit area, thereby reducing the temperature difference gradient between the hot and cold plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0011] Figure 2 It is a schematic diagram of the split structure of the preferred embodiment of the utility model.

[0012] Explanation of the accompanying symbols: 1. FPC cable; 2. Piezoelectric vibrator; 4. Valve plate upper cover; 5. Valve plate main body; 6. Valve plate lower cover; 8. Liquid outlet; 9. Liquid inlet; 10. First valve plate; 11. Second valve plate; 12. Water outlet; 13. Through port. DETAILED DESCRIPTION

[0013] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," "outside," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Please refer to Figure 1-Figure 2 The utility model provides a piezoelectric ceramic micro pump body, including: a pump body, the pump body including an FPC cable 1, a piezoelectric vibrator 2, a valve upper cover plate 4, a valve body 5, and a valve lower cover plate 6. The FPC cable 1 is arranged on the piezoelectric vibrator 2, the piezoelectric vibrator 2 is arranged on the upper end of the valve upper cover plate 4, the valve upper cover plate 4 is arranged on the upper end of the valve body 5, and the valve body 5 is arranged on the valve lower cover plate 6. In this embodiment, the number of structural layers of the piezoelectric ceramic micro pump body is reduced, which is more convenient for processing and has a thinner thickness.

[0017] Combine Figure 2 As shown, a liquid outlet 8 is provided on one side of the valve plate lower cover 6, and a liquid inlet 9 is provided on the side of the valve plate lower cover 6 close to the liquid inlet 9. A first valve plate 10 is provided on the side of the valve plate body 5 facing the liquid outlet 8. The first valve plate 10 bends upward to block the water outlet hole 12. At the same time, the second valve plate 11 bends upward to open the liquid inlet 9. On the contrary, the water outlet hole 12 is opened and the liquid inlet 9 is closed. A second valve plate 11 is provided on the side of the valve plate body 5 facing the liquid inlet 9. A water outlet 12 is provided on the side of the valve plate upper cover 4 facing the first valve plate 10, and a through port 13 is provided on the side of the valve plate upper cover 4 facing the second valve plate 11. When the piezoelectric vibrator 2 is energized and vibrates, the valve plate is forced to open and close, causing the medium to move in one direction. When the piezoelectric vibrator 2 moves downward, the lower valve plate on the positive pressure in the cavity opens, and the upper valve plate closes. When the piezoelectric vibrator 2 moves upward, the lower valve plate on the negative pressure in the cavity closes, and the upper valve plate opens.

[0018] Specifically, when the present invention is used, the FPC cable 1 is energized, so that under the drive of the AC power supply, the piezoelectric vibrator 2 radially shortens or extends, and at the same time drives the first valve plate 10 and the second valve plate 11 to bend and deform, forming an alternating vibration, causing the volume of the pump cavity of the piezoelectric ceramic pump to change alternately, thereby generating a pressure difference inside and outside the piezoelectric vibrator 2, promoting the continuous flow of liquid, and then outputting the low-pressure liquid entering from the liquid inlet 9 from the liquid outlet 8 at a higher pressure.

[0019] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0020] Other parts of the present invention that are not described in detail belong to the prior art and will not be described in detail here.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A piezoelectric ceramic micro pump body, comprising: The pump body is characterized in that the pump body includes an FPC cable (1), a piezoelectric vibrator (2), a valve plate upper cover (4), a valve plate main body (5), and a valve plate lower cover (6), wherein the FPC cable (1) is arranged on the piezoelectric vibrator (2), the piezoelectric vibrator (2) is arranged on the upper end of the valve plate upper cover (4), the valve plate upper cover (4) is arranged on the upper end of the valve plate main body (5), and the valve plate main body (5) is arranged on the valve plate lower cover (6).

2. A piezoelectric ceramic micro pump body according to claim 1, characterized in that: A liquid outlet (8) is provided on one side of the valve plate lower cover (6).

3. A piezoelectric ceramic micro pump body according to claim 2, characterized in that: A liquid inlet (9) is provided on one side of the valve plate lower cover (6) close to the liquid inlet (9).

4. A piezoelectric ceramic micro pump body according to claim 2, characterized in that: A first valve plate (10) is provided on the side of the valve plate body (5) facing the liquid outlet (8).

5. A piezoelectric ceramic micro pump body according to claim 4, characterized in that: A second valve disc (11) is provided on the side of the valve disc body (5) facing the liquid inlet (9).

6. A piezoelectric ceramic micro pump body according to claim 4, characterized in that: A water outlet hole (12) is provided on the side of the valve plate upper cover (4) facing the first valve plate (10).

7. A piezoelectric ceramic micro pump body according to claim 5, characterized in that: The valve plate upper cover plate (4) is provided with a through opening (13) on a side facing the second valve plate (11).

Images