RU2520583C1 - System for preventing formation of ice growths on roofs - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: system, comprising a roof and discharge pipes, includes a metallic conductor fixed along the roof contour to the lower surface of its edge. Flexible strips hanging down are attached to the metallic conductor, on the inner surfaces of which the horizontally disposed flexible piezoelectric elements are placed, the ends of which are connected to two different points of the conductor, forming an autonomous closed loop.

EFFECT: increase of operational reliability of the roof.

2 cl, 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.

There is also known a device for preventing the formation of icicles and ice growths on the roofs of houses according to the invention, “Roof device of a building and structure”, comprising a roof with an anti-icing coating applied on its surface, in the form of a strip along the lower edge of the roof, the width of which depending on the climatic zone and the slope of the roof is determined by a value from 0.1 m to 2.5 m; the coating strip is applied with an inlet 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 inlet e value exceeds 180 °, see. Russian patent №2244790, E04D 13/076 from 05.03.2003.

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 Force of a Freezing Liquid”, comprising 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.

A known system for preventing the formation of ice growths on metal roofs, comprising a metal roof, which is connected to metal drainpipes, with metal inserts in the ventilation ducts and sewer pipes through metal tires in low-heat insulation, and the upper surfaces of the metal inserts in the ventilation ducts and sewer pipes are extended beyond the edges of channels and pipes, and the roof, drainpipes, inserts into ventilation ducts and sewer pipes are ok asheny black, see. RF patent №2435005, E04D 13/076, on 10.06.2010.

However, the known system provides the elimination of ice growths only for metal roofs.

The aim of the present invention is to achieve a technical result to simplify and reduce the cost of the system to prevent the formation of ice growths on the roofs and edges of drainpipes and to expand the objects of protection against ice growths on all roofs with various types of roofs.

The specified technical result is ensured by the fact that in the known system for preventing the formation of ice growths on roofs containing a roof and drainpipes, it is proposed along the contour of the roof, to its lower edge surface, to attach a metal conductor on which to hang down flexible strips hanging on the inner surface of which place flexible horizontally positioned piezoelectric elements, the ends of which are connected to two different points of the conductor, forming an autonomous closed circuit. In addition, flexible strips have a width of 15 to 20 cm and are made, for example, of fluoroplastic.

The invention is illustrated in figure 1, which shows the anti-icer device.

The anti-icer system shown in FIG. 1 includes:

1) a roof;

2) drainpipes;

3) the edge of the roof 1;

4) metal conductor;

5) flexible stripes;

6) flexible piezoelectric elements;

7) connecting conductors.

The system for preventing the formation of ice growths on the roofs 3 consists of a roof 1 with drainpipes 2, where along the roof contour, to the lower surface of its edges, a metal conductor 4 is attached, on which flexible strips 5 hanging down from 15 to 20 cm wide with flexible placed horizontally by piezoelectric elements 6, the ends of which are connected to different points of the metal conductor 4 by means of connecting conductors 7, forming an autonomous closed electrical circuit. At the same time, flexible strips 5 with a width of 15 to 20 cm are made, for example, of fluoroplastic.

The claimed invention works as follows.

Along the contour of the roof 1, under its edge 3, a metal conductor 4 is attached, to which a flexible strip 5 of a width of 15 to 20 cm, made, for example, of fluoroplastic, is attached, and the flexible piezoelectric elements 6 are connected to the conductor 4 by means of connecting conductors 7, in which each piezoelectric element 6 becomes a kind of electric current generator.

Roof 1 with snow or ice crust is periodically affected by external factors, such as snow, wind, temperature and sunlight.

Snow on the roof with temperature drops exceeding zero Celsius, or under the influence of sunlight, thaws and melt water flows down along the edge 3 of the roof and flows onto flexible stripes 5. When the temperature drops below zero at night, melt water freezes, forming icy growths and icicles on the eaves of the roof 1 and on the flexible strip 5.

When the wind occurs, strips 5 sway with them and flexible piezoelectric elements 6 attached to the inner surfaces of the strips 5. Piezoelectric elements 6 generate electricity, which through connecting conductors 7 enters to different points of conductor 4, forming an autonomous closed circuit. Thus, an electric current flows in this closed loop. In this case, conductor 4 is heated and the ice melts at the “metal conductor - roof material” interface, which leads to a weakening of the bonds of the ice build-up with roof 1 and its fall.

Given that there are many piezoelectric elements 6, the conductor 4 is heated at many points. These heat microportions increase the temperature of the entire conductor 4, and the ice at the border with the edge of the roof 1 melts, weakening the bonds of the ice formation with the roof 1, which leads to a drop in ice formations.

In addition, when a wind occurs, the flexible strip 5 begins to oscillate, creating a wave-like mechanical effect on the edge 3 of the roof 1. In this case, ice growths, films and icicles that break on the flexible strip 5 and the edge 3 of the roof 1 break and fall down.

Thus, two factors act on ice formations on the roof contour 1: heating of the roof through a metal conductor and mechanical vibrations of the flexible bands 5 from the wind, which dump the formed ice growths from the roof 1.

Given that the wind often occurs, icicles on the roof do not reach large and dangerous sizes and weights and this invention prevents the danger of harm from falling.

Sometimes melt water freezes and captures the ice mass and drainpipes. This occurs when the ice build-up at the edge 3 of the roof 1 increases in size and captures objects adjacent to the roof 1, i.e. and downspouts 2.

But in the presence of flexible strips 5 with flexible piezoelectric elements 6, ice outgrowths do not grow on them at the edge 3 of roof 1, and therefore, the formation of a large ice outgrowth capturing the drain pipes 2 does not occur.

The best option is to attach the flexible strips 5 to the metal conductor 4, which, in turn, is attached to the lower surface of the edge 3 of the roof 1. In this case, melt water does not flow on the inner surface of the strips 5, where the ice neoplasms last longer, because . devoid of sun exposure.

The fastening of the flexible strips 5 to the metal conductor 4, and it to the edges of the roof 1 can be done with rivets or screws.

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

The claimed invention can be performed by employees of any utility service, which indicates its compliance with the patentability criterion - industrial applicability.

Claims (2)

1. The system of preventing the formation of ice growths on the roofs, containing a roof, characterized in that along the contour of the roof, to the lower surface of its edge, is attached a metal conductor on which are fastened hanging down flexible strips with a width of 15 to 20 cm, on the inner surface of which are placed flexible horizontally located piezoelectric elements, the ends of which are connected to two different points of the conductor, forming an autonomous closed loop. 2. The system of preventing the formation of ice growths on the roofs according to claim 1, characterized in that the flexible strips have a width of 15 to 20 cm and are made, for example, of fluoroplastic.

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