RU65184U1 - SUPPLY FILTER-VENTILATION DEVICE - Google Patents

Abstract

The supply filtering device is designed to provide sound insulation, air exchange in rooms with natural and artificial ventilation. The device comprises a housing with lower and upper walls, inside which a frame is installed, consisting of a plate inclined with respect to the lower wall of the housing, with a visor and with holes for air passage. Filter plate is installed on the plate, the inclined position of which provides an increase in its active surface for air passage, reduces aerodynamic resistance to air flow at specified housing sizes, and increases the device's operating life until the mesh and filter material are cleaned. 1 n.a. f-ly, 4 ill.

Description

The utility model relates to the field of civil and industrial construction and can be used as a device to ensure the required air exchange in residential and other rooms with natural and artificial ventilation.

During the construction of pressurized building structures, normative air exchange, protection from dust and noise are not provided, and the sanitary and hygienic condition of the air environment in the premises is deteriorated.

Known forced-air ventilation device for residential premises, adopted as a prototype, (Handbook of heat supply and ventilation. Book two. Ventilation and air conditioning. Edited by R.V.Schekin and others. Kiev: Budivelnik, 1976, sheet VII.3 , p.21, fig.2.) located in the channel of the outer wall of the room under the window with a shutter inside it, a removable shield installed at the air outlet from the channel.

The disadvantages of this device are: insufficient efficiency of cleaning the supply air from fluff, dust, etc., increased aerodynamic resistance to air flow due to its sharp rotation at the location of the removable shield and due to a significant reduction in the passage section of the air channel in the control dampers, the possibility of moisture condensation on the removable shield from the side of the room, not high sound insulation.

The objective of the proposed technical solution is to increase the efficiency of cleaning the supply of outdoor air, sound insulation, eliminating the formation of condensate on the wall of the room, improving the service conditions of the proposed device.

The technical result is achieved by the fact that the supply filtering device includes a housing with lower and upper walls, a mesh,

filter material and control damper, a frame is installed inside the housing, consisting of a plate inclined with respect to the lower wall of the housing, with a visor supporting heat and sound insulation and with holes for air passage supported by fins resting on the lower wall of the housing, and a filter is installed on the plate material, mesh, covering the cross section of the casing for the passage of air except the holes in the plate.

The filter material is located behind the mesh in relation to the direction of air movement.

At the end of the case from the side of the room there is a pivoting chamber with a control flap.

The frame with the mesh and filtering material, the pivoting chamber with the control flap are made collapsible from the premises.

The control damper in the open position is parallel to the wall of the room under the device.

Inside the turntable, on the end and side walls, as well as on the visor, heat and sound insulation is installed.

Figure 1 shows the installation diagram of the proposed device; figure 2 is a General view of the device is a longitudinal section; figure 3 is a section aa in figure 2; figure 4 is a section bB in figure 2.

The supply filtering device located in the channel 1 of the outer wall of the room contains a housing 2 with bottom 3 and upper 4 walls, open for the influx of external air from one end. Inside the casing 2, a frame 5 is installed, consisting of a plate 6, inclined with respect to the lower wall of the casing, with openings 7 for air passage and with a visor 8 with heat and sound insulation 9 installed on it, supported by ribs 10 supported by the lower casing wall. plate 6 is equipped with a filter material 11 with a mesh 12, so that they overlap the cross section of the casing for the passage of air except for the holes 7 in the plate 6. At the other end of the casing, which goes into the room, is installed

the rotary chamber 13 with the control flap 14, made in the form of a flat plate, completely blocking in the closed position the outlet of the rotary chamber 15, and in the open position preventing the passage of the air leaving the rotary chamber to the room wall under the device. To prevent condensation from falling out on the outer surface of the walls of the turntable and for sound insulation inside it, on the end and side walls, heat and sound insulation 16 and 17 are installed.

Filter ventilation device operates as follows.

Supply outdoor air under the influence of natural or artificial ventilation enters the channel 1 in the outer wall, for example, under the windowsill 18, enters the open end of the device body 2, then the entire flow passes between the mesh 12 and the upper wall of the body 4, while part of the air passes through the mesh 12 and the filter material 11, through the hole 7 in the plate 6, and its amount decreases from the maximum value at the entrance to the device to the minimum at the end of the filter material. In the space between the plate 6 (filter material 11) and the bottom wall 3, the air flow, on the contrary, increases along the air towards the pivoting chamber 13 (towards the exit) from the minimum to the maximum value. When the air stream passes through the mesh 12, large dust particles, fluff, etc. are captured. Small dust particles settle in the filter material 11. After passing through the frame with a plate with holes, a mesh, filter material and a visor, the dust free of dust and dirt cleans the air into a rotary chamber 13, in which it is directed downward by ~ 90 ° into a space convenient for residents - between wall and heater.

The inclined position of the mesh and filter material contributes to an increase in their active surface for air passage, a decrease in aerodynamic resistance to air flow at a given housing size

and the difference in air pressure outside and inside the premises, increasing the life of the device to clean the mesh and filter material.

The shape of the rotary chamber and the control flap provide a downward rotation of the air flow and exit to a convenient location with minimal aerodynamic drag. The design of the control flap, along with the main function of regulating the amount of supply air, also protects the walls of the room under the device from the flow of cold air, which eliminates the formation of condensate on them.

The location of the filter material, heat and sound insulation in the device reduce the penetration of noise from the outside of the room, dust, and prevent the formation of moisture condensation on the outer surface of the PTZ camera and on the wall at the location of the device.

For periodic cleaning of the mesh, filter material from fluff, dirt, dust, etc. the proposed device is easily disassembled from the side of the premises (all elements except the case are removed) in the following sequence: a rotary chamber with an adjusting flap, a frame with an inclined plate, a mesh, filtering material, and heat and sound insulation on the visor. Then the mesh and filter material are removed and, if necessary, cleaned. The device is assembled in the reverse order.

Claims (6)

1. A supply filtering device comprising a housing with lower and upper walls, a mesh, filter material and an adjustment damper, characterized in that a frame is installed inside the housing, consisting of a plate inclined with respect to the lower wall of the housing, with a visor supporting heat and sound insulation and with openings for the passage of air supported by ribs resting on the lower wall of the casing, while the filter material is installed on the plate, a mesh covering the section of the casing for the passage of air, except for the openings in the stove. 2. The supply filtering device according to claim 1, characterized in that the filter material is located behind the mesh with respect to the direction of air movement. 3. The supply filtering device according to claim 1, characterized in that a pivoting chamber with a control flap is installed on the side of the housing from the side of the room. 4. The supply filtering device according to claim 1, characterized in that the frame with the mesh and filtering material, the pivoting chamber with the control damper are made collapsible from the premises. 5. The supply filtering device according to claim 1, characterized in that the control damper in the open position is parallel to the wall of the room under the device. 6. The supply filtering device according to claim 1, characterized in that inside the pivoting chamber, on the end and side walls, as well as on the visor, heat and sound insulation is installed.