Synthetic jet device based on electromagnetic drive

An electromagnetic drive, synthetic jet technology, applied in the direction of jetting device, liquid jetting device, etc., can solve the problems of low frequency, low energy level of synthetic jet, low working frequency, etc. powerful driving effect

Inactive Publication Date: 2014-07-02
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piston vibrating actuator can provide large synthetic jet energy, but it needs a motor drive to drive the piston to vibrate, and the frequency is not high
Shape memory alloy actuated actuators and polyvinylidene fluoride membrane vibration can also provide greater synthetic jet energy, but the...

Method used

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  • Synthetic jet device based on electromagnetic drive
  • Synthetic jet device based on electromagnetic drive
  • Synthetic jet device based on electromagnetic drive

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Experimental program
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Embodiment Construction

[0021] This embodiment is an electromagnetically driven synthetic jet.

[0022] Synthetic jet is one of the important devices in the field of flow control. It adopts piezoelectric, electrostatic or electromagnetic driving methods to make its elastic diaphragm vibrate in suspension, thereby causing periodic changes in the volume of the cavity, thereby dispelling the external gas The cavity is continuously inhaled and discharged through the nozzle, and a synthetic jet is generated without an additional air source to achieve active control of the flow field. The electromagnetically driven synthetic jet has the characteristics of simple structure, low working voltage and large driving force.

[0023] refer to figure 1 . The driving device in this embodiment is an electromagnetically driven synthetic jet device, including an electromagnet (1), an assembly housing (2) and a synthetic jet device (3);

[0024] The assembly shell (2) is a boss with an axially penetrating cavity;

...

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PUM

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Abstract

The invention discloses a synthetic jet device based on electromagnetic drive. The synthetic jet device mainly comprises an electromagnet (1), an assembling shell (2) and a synthetic jet device body (3). The electromagnet (1) adjusts and controls the distance between the electromagnet (1) and an elastic vibration film (3-2) through threads. Current in sinusoidal variation is fed into the electromagnet (1) to generate an alternating magnetic field so as to generate alternating electromagnetic force for a permanent magnet film (3-1). The permanent magnet film (3-1) drives the elastic vibration film (3-2) to vibrate, the pressure of a gas cavity formed by the elastic vibration film (3-2) and a cavity body (3-3) varies, and synthetic jet flow is generated through a jet opening (3-4). The synthetic jet device is low in working voltage, large in non-contact drive force, large in air outlet amount, reasonable in design, simple in structure, and capable of realizing active flow control.

Description

technical field [0001] The invention relates to an electromagnetically driven synthetic jet device, which can be used in flow control directions such as active flow control, jet vector control, enhanced mixing and enhanced heat transfer and heat exchange control. Background technique [0002] Synthetic jet has broad application prospects in the field of active flow control. Synthetic jet actuator is the core component of synthetic jet technology. The driving function is realized by vibration of the diaphragm during work. It only needs to change the frequency, amplitude and phase of the electrical signal of the actuator. It can be adjusted and controlled according to requirements. The synthetic jet actuator mainly has piezoelectric, electrostatic, electromagnetic and other driving methods. It uses these driving methods to make the diaphragm vibrate in the air, which causes the volume of the cavity to change, so that the external gas is continuously sucked into and discharged ...

Claims

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Application Information

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IPC IPC(8): B05B17/06
CPCB05B17/0607
Inventor 邓进军王文庆庄成乾马炳和苑伟政姜澄宇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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