RU1789837C - Vortex ventilation system - Google Patents

Abstract

SUMMARY OF THE INVENTION: A suction duct has rotationally symmetric snail spinners of opposite rotation. The rear vertical screen is equipped with flaps. Supply vertical boxes with vertical slotted nozzles are made from the side of curlers installed above the working area. The flaps are made flat and deployed in opposite to one another. The nozzles abut on the screen side to the outer surfaces of the flaps and face their edges. 2 ill.

Description

The invention relates to industrial ventilation and can be used to control harmful emissions in fixed workplaces.

There is a known inclined exhaust panel for uniform suction of the structure of A.S. Chernoberezhny, in which the suction hole is made in the form of a lattice formed from separate planks of a profiled shape. Between them are horizontal slots for drawing in contaminated air. The live section of the slots is 25% of the overall area of the panel, and the angle of inclination of the suction grate to the horizon is 45 °.

A Carousel-type ventilation unit is also known in five welding stations for aspirating harmful substances released during welding. The installation consists of a central column, where the channels of clean supply and polluted exhaust air are located. Exhaust panels are installed above the welder's place to catch harmful substances. An annular umbrella is placed above the panels;

supply air ducts creating an annular curtain with jets. Supply air jets separate the welders from the rest of the workshop space, prevent leakage of contaminated air from neighboring areas and provide a breathing zone with clean air.

The closest in technical essence and the achieved effect is a cabinet with a suction in the form of axisymmetrically arranged snail suction openings on the sides, the nozzles of which converge into a single suction duct. At the same time, a vertical screen is installed behind the cochlea, the edges of which are bent along the radius, in the form of flaps adjacent to the coils of the coils.

However, the known device does not have sufficient efficiency.

The purpose of the invention is to increase efficiency.

The goal is achieved in that the system is equipped with a supply vertical ducts with vertical slotted nozzles made from the side of the curlers, while the latter installed

WITH

x1

00

about

00

with xi

They are above the working area, the flaps being made flat and turned in opposite directions from each other, and slotted nozzles are adjacent from the screen side to the outer surfaces of the flaps and facing their edges.

In Fig. 1 d2, the proposed ventilation system is shown; The system of vortex vortex ventilation is based on two non-rotary vane swirls with opposite axial rotation.

with confusers 2, the tangential nozzles 3 of which are connected to a common exhaust main duct 4, the snail curlers 1 are located above the working surface 5 of the working table 6. On the working table b behind the curlers 1 there is a flat vertical screen 7 with flaps 8 turned to the sides, the outer surfaces of which at their junctions with the screen 7 are adjacent to the slotted nozzles 9 of the supply air ducts 10 directed to the edges of the flaps 8.

Claims (1)

The claims Vortex ventilation system of the working area, comprising a suction duct with axially symmetric snub-type swirls of opposite rotation and a rear vertical screen with flaps, with the exception that, in order to improve ventilation efficiency, the system is equipped with supply air - steel boxes with vertical slotted nozzles made on the side of the curlers, the latter being installed above the working area, with the flaps of the screen made flat and deployed in opposite sides, and the slotted nozzles adjacent from the screen to the outer surfaces of the flaps and facing them trimmings. f FIG. 2