Valveless piezoelectric pump of conical spiral flow tube
A valveless piezoelectric pump, helical flow technology, applied in the direction of pumps, pumps with flexible working elements, liquid variable capacity machines, etc., can solve the problems of poor reverse flow stop performance, etc. Simple processing and the effect of reducing energy loss
Inactive Publication Date: 2013-11-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
It overcomes the shortcomings of existing valveless piezoelectric pumps, such as poor reverse stop performance, and at the same time, expands the application range of spiral flow tube technology in heat transfer, mixing and other fields
Method used
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[0034] Such as figure 2 , image 3As shown, the conical spiral flow tube valveless piezoelectric pump of this embodiment includes a pump body 1 composed of a lower cover 4 and an upper cover 7 that are sealed and connected, and a piezoelectric pump is installed between the lower cover 4 and the upper cover 7 The pump chamber 14 of the vibrator 2 also includes a first tapered spiral flow tube 22A and a second tapered spiral flow tube 22B fixed on the upper cover 4, and the first tapered spiral flow tube 22A and the second tapered spiral flow tube 22A are fixed on the upper cover 4. The flow tubes 22B are respectively arranged on both sides of the pump chamber 14; the first tapered spiral flow tube 22A includes a first circular truncated 9A, a first conical spiral groove 10A arranged on the surface of the first circular truncated 9A, and a coating of the first The first conical cover 8A on the surface of the conical cover 9A, the conical cover 8A is provided with a fluid inlet...
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The invention relates to a valveless piezoelectric pump of a conical spiral flow tube. The valveless piezoelectric pump comprises a pump body, a pump chamber, a first conical spiral flow tube and a second conical spiral flow tube, wherein the pump body consists of a lower cover and an upper cover which are connected in a seal mode; the pump chamber is arranged between the lower cover and the upper cover and accommodates a piezoelectric vibrator; the first conical spiral flow tube and the second conical spiral flow tube are fixed on the pump body, and are respectively arranged at two sides of the pump chamber; each conical spiral flow tube comprises a circular table, a conical spiral groove and a conical cover; the conical spiral groove is arranged at the surface of the circular table; the conical cover wraps the surface of the circular table; the conical cover is provided with a fluid inlet which is communicated with the top end of the conical spiral groove; and the bottoms of the first conical spiral flow tube and the second conical spiral flow tube are respectively communicated with the pump chamber. In the valveless piezoelectric pump of the conical spiral flow tube provided by the invention, a spiral flow tube technology and a piezoelectric technology are combined organically, the energy loss of the moving fluid is reduced, and the working efficiency of the pump is improved; and simultaneously the application ranges of the spiral flow tube in the fields of heat transfer, mixing and the like are widened, and the pump is especially suitable for the environment which is sensitive to the magnetic filed.
Description
technical field [0001] The invention relates to a valveless piezoelectric pump, in particular to a valveless piezoelectric pump using a conical spiral flow tube. Background technique [0002] Piezoelectric pumps belonging to the volumetric type can be divided into valved and valveless piezoelectric pumps if they are classified according to the valve body. If the valve is defined as: during the suction and discharge process of the pump, at least for a period of time, there is a mechanical device that is not connected between the pump chamber and the suction port or the discharge port, then the so-called "valveless" is: at any time , The pump cavity is connected with the suction port or the discharge port. At this time, the one-way flow of fluid relies on special mechanical devices. This device utilizes the properties of the fluid, so that the pump chamber is always in communication with the suction and discharge ports, and can drive the fluid to flow in one direction. At p...
Claims
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IPC IPC(8): F04B43/04
Inventor 张建辉皋路
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS