Double-cylinder dynamic-state- imitating natural air generator

Abstract

The invention provides a double-cylinder dynamic-state- imitating natural air generator. The double-cylinder dynamic-state- imitating natural air generator comprises a rectangular air duct. A rectangular air supply opening is formed in the tail end of the rectangular air duct and internally provided with a Karman vortex street generator. The Karman vortex street generator comprises two cylinders.The two cylinders are perpendicular to the rectangular air supply opening. The double-cylinder dynamic-state- imitating natural air generator is applied to a building space; air treated through an airconditioning system is delivered to the tail end, namely the rectangular air supply opening, of a system through an air delivery pipe and then passes through the Karman vortex street generator; whensteady incoming flow bypasses the Karman vortex street generator, double-row linear vortexes can periodically fall off the two sides of the Karman vortex street generator, wherein the double-row linear vortexes are opposite in rotation direction and regular in arrangement; and after the double-row linear vortexes are subjected to the nonlinearity effect, a Karman vortex street is formed. Turbulentflowability and turbulence intensity of the airflow are enhanced, the speed fluctuation is increased, and monotony of mechanical air supply is eliminated.

Description

technical field [0001] The invention belongs to the technical field of heating, ventilating and air conditioning, and in particular relates to a double-cylindrical imitation dynamic natural wind generator. Background technique [0002] At present, the air supply method in the building space is mostly mixed ventilation based on the dilution principle; the traditional mixed ventilation system air supply outlet is usually installed on the top of the room or in the middle of the side wall. The air supply air enters the air-conditioned room in the form of a free jet. The free jet is characterized by high speed, large momentum and turbulent air supply. Because the air supply port is easy to arrange in the building space, it does not occupy the lower building space (working area), and the free jet mixes Ventilation is still widely used today. The most common orifice free jet configurations are figure 1 shown. The air supply method is the main factor affecting the thermal comfort...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a dual-cylindrical imitation dynamic natural wind generator, which solves the problem in the prior art that the air output of indoor air-conditioning equipment is not soft enough, changeable and comfortable.

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