RU2435005C1 - Method to prevent formation of ice nodes on metal roofs - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: metal roof by means of metal busbars packed into low heat conductivity insulation is connected to metal gutters, with metal inserts installed into ventilation ducts and sewage pipes. Upper surfaces of metal inserts installed into ventilation ducts and sewage pipes are extended outside the edges of the channels and pipes, and the roof, gutters, inserts into ventilation ducts and sewage pipes are painted black.

EFFECT: increased efficiency of ice nodes formation prevention at roofs of buildings and structures.

1 dwg

Description

The present invention relates to a public utilities system and to the field of construction and, in particular, can be used to prevent the formation of icicles and ice growths on the metal roofs of buildings and structures.

A device is known for preventing the formation of icy growths and icicles on metal roofs of houses according to the “Method for Reducing the Adhesion of Freezing Fluid”, containing a temperature meter for a controlled surface, piezoceramic emitters, magnetostrictive transducers and electromagnets, see RF patent No. 2278223, E04D 13/00 of 22.02 .2005.

The method consists in observing the temperature of the controlled surface by means of a temperature meter and, when the temperature reaches the beginning of crystallization of the liquid, the formation of deformation on the controlled surface by means of magnetostrictors and electromagnets.

A device for preventing the formation of icicles and ice growths on the roofs of houses according to the invention, "The device of the roof of the building and structures", containing a roof with an anti-icing coating on its surface, in the form of a strip along the bottom edge of the roof, the width of which depending on the climatic zone and inclination the roof is determined by a value from 0.1 m to 2.5 m; the coating strip is applied with an overflow relative to the roof by an overhang of at least 2 cm down from its lower edge; the angle between the roof plane and the overflow does not exceed yshaet values of 180 ° (see. №2244790 RF patent, E04D 13/076 from 05.03.2003).

However, the known device is an ineffective system for preventing ice build-up on the roof due to the low reliability of fastening and holding the anti-icing coating.

The aim of the present invention is to achieve a technical result to increase the effectiveness of preventing ice formations on the roofs of buildings and structures.

The specified technical result is ensured by the fact that in the known device containing the metal roof of the building, it is proposed to connect the metal roof by means of metal busbars in low heat insulation with metal drain pipes, with metal inserts into ventilation ducts and into sewer pipes, while it is proposed to extend the upper surfaces of the metal inserts over the edges of channels and pipes, and the roof, drainpipes, inserts in ventilation ducts and sewer pipes should be painted black color.

The claimed invention is illustrated in the drawing. The drawing schematically shows a system for preventing the growth of ice growths on the roof.

The claimed system includes a metal roof 1 of the building, downspouts 2 and ventilation ducts 3 and sewer pipes 4. The last two are fitted with metal inserts, respectively 5 and 6. Roof 1, downspouts 2, metal inserts 5 and 6 in the ventilation ducts 3 and sewer 4 pipes are connected by metal tires 7 in isolation.

The claimed invention works as follows.

The roof with snow or ice crust is periodically affected by an external factor - sunlight and two thermal factors of the house itself are constantly affected:

- heat coming out of the ventilation ducts of the house;

- heat coming out of the sewer pipes of the house.

Ventilation ducts 3 and sewer pipes 4 of buildings and structures have an open exit to the roof. Through them, warm air from the premises of the buildings goes out.

Sewer pipes 4 are made of metal or polymer. In the first case, the pipe is heated with warm air to the temperature of the warm air leaving the house.

For the case of a pipe made of round polymer, an insert 6 is made of sheet metal in the shape of a cylinder, the diameter of which is equal to the inner diameter of the pipe. This insert - cylinder 6 fits snugly into the pipe with an interference fit so that its part protrudes above the edge of the pipe 4 and is sufficient to connect a metal rail 7. This protruding metal part also has a heating temperature identical to the inner part.

The ventilation ducts 3 facing the roof can also be either metal or made of masonry.

For the second case, an insert 5 is made from sheet metal in the form of a channel, which is inserted with an interference fit into the ventilation channel 3, so that part of it protrudes above the edge of the channel and is sufficient to connect a metal bus 7 to it.

Warm air from the premises of the building goes outside, heats the channel 3 and the metal insert 5.

Since the ventilation ducts 3 and sewer pipes 4 directly or through metal inserts are connected via metal tires 7, made in the form of metal conductors in polymer insulation, to a metal roof, the heat leaving the house heats the inserts and then transfers to the metal roof and heats her and drainpipes 2.

In spring days, the sun more often appears in the sky and shines for a longer time, which means that there is longer lighting alternately of individual parts of the roof and the drainpipes and metal inserts connected to it 5, 6.

Under the influence of sunlight on the roof, snow melts, water swells, and at night its freezing and the formation of ice growths. Given that the roof, drainpipes 2, ventilation ducts 3, sewer pipes 4 and metal inserts in them 5, 6 are painted black, intense heating of this entire metal array occurs.

This heat melts the border zone between snow (ice), an ice outgrowth, icicles and a metal roof. In this case, border snow (ice) turns into a liquid water layer - lubricant.

The resulting water layer significantly reduces the adhesion force of snow (ice) with the roof, the weakening of the adhesive bond between the roof surface and the ice build-up. When the force of adhesion of the ice build-up with the roof decreases to the mass of the ice formation, it slides off the roof.

Thus, the metal roof and the drainpipes connected to it, metal inserts 5, 6 in the ventilation ducts 3 and sewer pipes 4 are affected by complex heat, constantly emanating from the building through ventilation and sewage from three thermal factors: two internal and one external - the sun, acting in certain periods of daytime.

Thus, there is a frequent discharge of ice outgrowths, especially in the daytime, which excludes the formation of large and heavy ice outgrowths, dangerous for people when they fall.

Metal tires 7 in a polymer shell, connecting the roof surface and the metal elements placed on it, ensure the transfer of thermal energy. To reduce heat loss when exposed to snow and wind, metal tires 7 are packed in low-heat insulation.

The claimed system is completely new, which indicates its compliance with the patentability criterion - novelty.

The claimed invention can be performed in a locksmith workshop of any utility service, which indicates its compliance with the patentability criterion - industrial applicability.

Claims (1)

A system for preventing the formation of ice growths on metal roofs, comprising a metal roof, characterized in that the metal roof is connected to metal drain pipes, with metal inserts in the ventilation ducts and in the sewer pipes by means of metal tires in low heat insulation, and the upper surfaces of the metal inserts in the ventilation channels and into sewer pipes are extended beyond the edges of channels and pipes, and the roof, drainpipes, inserts into ventilation ducts and analizatsionnye pipe painted black.

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