RU29945U1 - Pitched Roof Ventilation System - Google Patents

Description

ROOF VENTILATION SYSTEM

The utility model relates to the field of construction, in particular, to the construction of a pitched roof ventilation system in buildings with attic volumes in which the under-roof material is located under the rafters. The proposed solution can be used both in the construction of buildings with pitched roofs, and in the repair of such buildings with pitched roofs.

A roof ventilation system is known (see description to Pat. RF No. 174696, 1990), having vertical exhaust ducts, the supply openings of which are connected to the air duct insulation, the exhaust openings are connected to the atmosphere, and a network of additional vertical channels made in the form of through openings in screed. These through-holes in the screed serve as the second stage of the ventilation system and intensify the removal of the vapor-air mixture through the vertical exhaust channels.

Such two-stage ventilation systems are applicable only to a flat roof and are not intended for a pitched roof, where ice forms on the outer surface of the roof, and icy growths and icicles form on the eaves overhangs.

The ventilation system of the pitched roof is known (see Japanese application No. 63-578 publ. 88.01.07, No. 4-15, claimed 61-297587, 83.11.16.), Containing attic vertical exhaust channels, the outlet openings of which are located under the ridge roofs and are connected to the atmosphere, and inlet openings connected to the attic volume and inclined pitched channels formed by roofing and roofing material and rafters, the air inlets of which are located in the eaves and the air inlets of the attic are located under the overhangs in the building wall.

The pedagogue of such a pitched roof ventilation system is the low ventilation efficiency when the weather changes and, as a result, a large difference in the temperature of the outside air and attic air, and therefore condensation forms on the inner surface of the roofing material, and ice and ice growths form on the outer surface, eaves overhangs - icicles.

The task was set: to create the design of a pitched roof ventilation system with a subroofing material located under the rafters, which reduces the formation of condensate on the inner surface of the roofing, and ice and ice growths on the outer surface of the roof, and icicles on the eaves.

2002130980

. SH111111

2QD2130990

MGZH7E04O13 / 16

This goal is achieved by the fact that the ventilation system of the pitched roof, containing attic vertical exhaust ducts, the outlet openings of which are connected to the atmosphere and located under the roof ridge, the inlet openings of which are connected to the attic volume, and the inclined ramp channels formed by roofing and roofing material and rafters, the inlet openings of which are located in the eaves overhangs, and the inlet openings of the attic volume are located under the overhangs in the building wall, characterized in that

the ventilation system is equipped with additional vertical exhaust channels attached externally to the attic vertical exhaust channels, the inlet openings of which are connected to the exits of the inclined ramp channels, the width of the additional vertical exhaust duct is equal to the width of the inclined ramp channel and equal to the height of the rafters, the outlet openings of the additional vertical exhaust ducts are located below the level output openings of attic vertical exhaust channels by an amount equal to the width of the inclined ramp anal, wherein the blowing apertures inclined sloping channels arranged in the lower plane of eaves.

The essence of the proposed technical solution is illustrated by the following.

The ventilation system of the pitched roof is constructed in such a way that the ventilation volume is divided into two independent, located one above the other, ventilation volumes: lower and upper.

The lower ventilation attic volume is limited by walls, the attic floor and the under-roof material. This ventilation volume is ventilated by the flow created by the supply openings located under the overhangs in the building wall and attic vertical exhaust channels.

The upper ventilation volume of the nodroof space is the volume limited by rafters, roofing and subroofing materials. This ventilation volume is ventilated by the flow created by additional vertical exhaust ducts connected to inclined ramp channels formed by roofing and roofing material and rafters, the inlet openings of which are located in the lower plane of the eaves.

In this case, the exhaust openings of the additional vertical exhaust ducts are located below the level of the outlet openings of the attic vertical exhaust ducts by an amount equal to the width of the inclined ramp channel, and the width of the additional exhaust duct must be equal to the width of the inclined ramp channel and must be equal to the height of the rafters.

outdoor temperature and differs by 1-2 ° C. In such conditions, at temperatures of atmospheric outside air below 0 ° C, there will be no melting snow and ice formation on the outer surface of the roofing, as well as icicles on eaves. In addition, condensation does not form on the inner surface of the roofing.

The attic lower ventilation volume is heated by heat from the building through the attic floor and is cooled by the lower ventilation flow. In this case, the area of the supply and exhaust openings is calculated from the condition of complete removal of heat and cooling of the attic volume to a temperature that differs from the temperature of the outside air by no more than 2-4 ° C, based on SNiP 2.04.05-86. Heating, ventilation and air conditioning / Gosstroy USSR. - M .: TsITP Gosstroy of the USSR, 1987.p. 54-56, taking into account SNiP II-3-79. Construction heat engineering / Ministry of Construction of Russia. - M .: GP TsPP, 1995.p.3-4., The operation of roofs of residential buildings: Directory / A.A. Nikitin, V.B. Nikolaev, N.N. Seldin, V.K. Sokolov. -M .: Stroyizdat, 1990.p.233-234.

In FIG. 1 shows a sectional ventilation system of a pitched roof, and FIG. 2 shows a ventilation system of a pitched roof in a perspective view.

The attic volume of the building has inlet openings 1 in the wall of the building 2 and vertical exhaust ducts 3 with walls 4, interacting with the roof ridge 5 from above. The attic of the building is covered with rafters 6, over which the crate is installed 7. Roofing material 8 is attached to the rafters 6 from the bottom with 8 bars 9. As a subroofing material, polyethylene and HBX films, roofing material, glassine, etc. are used. materials. Inclined pitched channels 10 are formed by roofing material 8, lathing 7 with roofing material 11 and rafters 6. Galvanized steel, metal tiles, asbestos-cement corrugated sheets, etc. are used as roofing material. materials. The drainage openings 12 of the inclined ramp channels 10 are located in the lower plane of the eaves overhangs and are made in the form of a gap between the wall of the building 2 and the sewing of the cornice overhang 13. The outlet openings of the inclined ramp channels 10 are connected to the inlets of the additional vertical exhaust ducts 14. The additional vertical exhaust ducts 14 are formed by the wall 4 attic vertical exhaust duct 3 and wall 15. Wall height 15 additional vertical exhaust ducts 14 below the height of the wall 4 attic vertical exhaust ducts 3 n and a value equal to the height of the rafters 6, for example 150mm. Such a wall height 15 of additional vertical exhaust ducts 14 is necessary to eliminate the mutual influence of the outputs of the upper and lower ventilation flows, i.e. elimination of the effect on the flow rates, providing a decrease in temperature in the roof and attic volumes.

The air stream enters the lower ventilation attic volume through the supply openings 1 in the wall of the building 2, forming the lower ventilation stream, the output of which is through the attic vertical exhaust ducts 3. This stream removes heat from the attic volume and cools the attic space to a temperature different from the outside temperature air no more than 2-4 ° C.

At the same time, the air flow enters through the inlet openings 12 into the inclined pitched channels 10 of the upper ventilation volume of the subroofing space, forming the upper ventilation note, the output of which is through additional vertical exhaust channels 14 and does not depend on the output of the lower ventilation stream. This flow maintains the temperature in the under-roof space at the level of the outdoor temperature, which differs by no more than 1-2 ° C.

The proposed design of the ventilation system of the pitched roof provides efficient operation, in which the difference between the temperature of the outdoor air and the air temperature in the roof and attic spaces is stable.

Under such ventilation conditions, there is no condensation on the inner surface of the roofing, which increases the service life of the roofing, and on the outer surface of the roofing there is no melting snow and ice and icicles, which ensures high performance of pitched roofs.

Authors: Patent Owner - Applicant: CJSC Construction and Installation Trust No. General Director

A.N. Puzikov R.V. Biksaleev 19 A.P. Puzikov

Claims (1)

A pitched roof ventilation system containing attic vertical exhaust ducts, the outlet openings of which are connected to the atmosphere and located under the roof ridge, the inlet openings of which are connected to the attic volume, and inclined ramp channels formed by roofing and roofing material and rafters, the supply air openings of which are located in the cornice overhangs, and the air inlets of the attic volume are located under the overhangs in the wall of the building, characterized in that the ventilation system is equipped with additional vertical and exhaust channels attached externally to the attic vertical exhaust channels, the inlet openings of which are connected to the exits of the inclined ramp channels, the width of the additional vertical exhaust duct is equal to the width of the inclined ramp channel and equal to the height of the rafters, the outlet openings of the additional vertical exhaust ducts are located below the level of the outlet openings of the vertical exhaust ducts by an amount equal to the width of the inclined ramp channel, while the supply openings of the inclined ramp channels fishing disposed in the lower plane of the eaves.