| 摘要 |
FIELD: ventilation.SUBSTANCE: blowing ventilation valve consists of a box tightly enveloping the window frame. One part of the box enveloping the window frame protrudes outside the building, has an inlet opening into which the filter and the air intake grid are mounted. The second part of the box enveloping the window frame protrudes inside the building and has an outlet opening. The main part of the box has an opening which is closed by a lid. Between the inner cavity of the box, the inlet and outlet openings of the parts enveloping the window frame there are jumpers, in which there are also correspondingly inlet and outlet openings. Inside the box an adjustable shutter is mounted, which is pressed against the surface of the box and the jumpers by the pressing plate and the springs. The adjustable shutter can move in the gap between the surface of the box and the pressing plate, while simultaneously opening or closing the inlet and outlet openings of the jumpers of the box. On the inner surfaces of the lid and the pressing plate the plates of noise-absorbing material are mounted.EFFECT: blowing ventilation valve design is simple and technological, has an adjustable shutter capable of simultaneously opening or closing the inlet and outlet openings, which excludes its freezing and heat loss during severe frosts, provides an effective adjustable ventilation and reduction of street noise.2 cl, 4 dwg |
