DEVICE FOR INLET VENTILATION FOR WINDOW UNITS, VENTILATION VALVE, PROTECTIVE SHIELD AND DETACHABLE FILTER FOR THIS DEVICE Russian patent published in 2019 - IPC E06B7/02 F24F13/00 F24F7/00 

FIELD: ventilation.

SUBSTANCE: present invention relates to ventilation devices used for air exchange between environment and production or living rooms, and can be used to provide natural ventilation of enclosed premises for various purposes by its integration into window units. Device for plenum ventilation for window blocks from polymer materials comprises a ventilation valve configured to be installed on the inner side on the window unit flap with providing a ventilation duct for air passage, comprising a hollow housing comprising an upper and lower flat bases connected by end walls and a rear side wall, wherein in the housing cavity there is a movable unit for regulating the air flow, which includes a movable plate and a driven gate, and a protective shield configured to be installed on the outer side of the window unit frame before entering the ventilation channel. Device further comprises a detachable filter configured to be mounted on the window unit frame outer side under the protective shield before entering the ventilation duct, wherein the filter includes a frame element and a filtering material. Upper and lower flat bases of the ventilating valve body on the side of their contact to the window frame flap are made with longitudinal recesses along the entire length of bases for air passage. Plate and flap of movable unit for controlling air flow are equipped with antifriction projections.

EFFECT: reduced noise from air passage and improved quality of room noise insulation with simultaneous provision of high degree of incoming air cleaning, as well as simplification of design and ease of use of the device for plenum ventilation due to reduced friction between movable parts of the device.

20 cl, 5 dwg