Axial pulse vortex ring generation device based on positive and negative pressure alternating closed chamber deformation

Abstract

The invention discloses an axial pulse vortex ring generation device based on positive and negative pressure alternating closed chamber deformation. The axial pulse vortex ring generation device comprises a fixed rack, a ventilation device, a disturbance device and a power device, wherein the ventilation device, the disturbance device and the power device are fixedly arranged on the fixed rack, and the power device is connected with an elastic film in the ventilation device through the disturbance device; and the power device comprises a strain gauge, a positive-negative pressure generation chamber and a cold-hot alternating mechanism, the strain gauge is arranged at one end of the positive-negative pressure generation chamber and connected with the input end of the disturbance device, andthe other end of the positive-negative pressure generation chamber is open and provided with the cold-hot alternating mechanism. According to the axial pulse vortex ring generation device based on positive and negative pressure alternating closed chamber deformation, heat change can be converted into mechanical displacement, airflow in a ventilation pipeline is accelerated, axial pulse disturbance is generated, and then a vortex ring is generated.

Description

technical field [0001] The invention relates to the technical field of fluid mechanics, in particular to an axial pulse vortex ring generating device based on the deformation of a sealed chamber based on alternating positive and negative pressures. Background technique [0002] In the existing vortex ring generating device, the vortex rings are mainly generated intermittently one by one, and the ventilation rate is greatly limited. For the heating or cooling field with the minimum ventilation rate standard, the vortex ring ventilation rate produced by it cannot meet the requirements. Moreover, the existing axial disturbance vortex ring device relies on the electromagnet to directly impact and disturb the film, the stroke is limited, and the disturbance effect is not ideal. If the motor is used to drive the screw to impact and disturb the film, it is inconvenient to achieve short-term high-speed and intermittent disturbance, and the continuous change of the direction of the m...

AI Technical Summary

Problems solved by technology

[0002] In the existing vortex ring generating device, the vortex rings are mainly generated intermittently one by one, and the ventilation rate is greatly limited. For the heating or cooling fields with the minimum ventilation rate standard, the vortex ring ventilation rate produced by it cannot meet the requirements.

Moreover, the existing axial disturbance vortex ring device relies on the electromagnet to directly impact and disturb the film, the stroke is limited, and the disturbance effect is not ideal

If the motor is used to drive the screw to impact and disturb the film, it is inconvenient to achieve short-term high-speed and intermittent disturbance, and the continuous change of the direction of the motor makes the performance of the motor unable to maximize. If it is a moving structure, the impact and noise to achieve the above requirements are too large, so it is not the best choice

Images