Pollutant discharge device and oblique single air curtain type range hood using same

Abstract

The present invention discloses a pollutant discharge device and an oblique single air curtain type range hood using the same. The rear side of the pollutant discharge device is close to a wall; the pollutant discharge device comprises an air blowing device and a suction cover; the air blowing device is provided with a long air blowing end, and the long air blowing end is arranged on front side of a platform or stove surface to spray out air jet flow upwards respectively; and the suction cover is arranged at a distance above the platform or stove surface and is provided with a long air extraction end with a downward opening, the long air extraction end is connected with an air extractor to form an upward suction force, and the long air extraction end is parallel to the long air blowing end and shifts a distance in the direction right above the long air blowing end towards the wall. Therefore, when the air extractor works, an almost two-dimensional oblique air curtain is formed between the long air extraction end and the long air blowing end to remove the oily fume or harmful gas encircled between the oblique single air curtain and the wall, reduce the dissipation of pollutants and enhance the capability of resisting the disturbance airflow around.

Description

technical field [0001] The present invention relates to a pollutant discharge device, especially a device that uses the principle of aerodynamics to form an oblique air curtain above a platform to eliminate the pollution enclosed between the oblique single air curtain and the wall. A pollutant discharge device for waste and an oblique single-air-curtain range hood using the device. Background technique [0002] For users who work in general restaurant kitchens, laboratories, dust operation workshops or other workplaces that generate polluting gases, the escape of oily fumes or toxic gases will not only pollute the environment, but also cause invisible harm to the human body. harm. [0003] Taking the traditional range hood as an example, its structure and configuration are roughly as follows: Figure 12 As shown, the range hood 10 is fixed below the upper air duct cabinet 15, the rear end leans against the rear wall 14, there may be a wall 13 at a certain distance on the si...

AI Technical Summary

Problems solved by technology

Furthermore, since the upward suction method used in this method is still the original "large-area suction" strategy of the traditional range hood, it is difficult to create a long-distance push-pull effect on the airflow, and the jet flow is easily caused by Diffusion and fragmentation; in terms of physical principles, this design does not conform to the principle of "push-pull air curtain", and cannot form an "air curtain" with both isolation and emission effects

Therefore, the following two problems will arise in conjunction: (1) The oil fume and pollutants are surrounded by the gas wall and the solid wall, and move with the fluid vortex stirred near the stove, so that the time to stay in the enclosed area (residence time) will be much longer (if smoke is placed near the stove, you can see the smoke above and around the stove stirring and not easily sucked by the range hood above). (2) Because the fluid vortex on the hearth stirs around the hearth, it will cause the flame to flutter and reduce the combustion efficiency

[0006] As mentioned above, traditional range hoods have the problem of easy leakage due to poor flow field patterns, and this bad flow field pattern is caused by basic fluid mechanics characteristics

Therefore, if improvements are made according to the traditional basic structure, the effect is not easy to be highlighted

Images