RU2495208C1 - Method to protect surface of drain elements of material facility roof against icing - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: hydrophobic anti-wetted coating is applied on the surface of drain elements with an edge wetting angle of more than 120°. In the beginning of the vertical part of the gutter there is a baffle ring, at the same time the coating is applied onto the inner surfaces of the receiving funnel, the inclined part of the pipe and the baffle ring.

EFFECT: increased operational reliability of a roof.

2 cl, 3 dwg

Description

The present invention relates to areas of the economy related to the protection of the surface of the drainage elements of roofs of roofs of various kinds of material objects: houses, warehouse buildings, etc.

When icing the surface of the drainage elements of roofs, primarily drainage gutters and drainpipes, the normal transport of melt water from the roof surface is disrupted. At the same time, gutters, receiving funnels and the volume of drainpipes are clogged with ice. The mass of icy drainage elements increases significantly, and with strong gusts of wind, they are destroyed and fall down to the ground, which can lead to material damage and loss of life.

A known method of coating a metal plate (see Japan patent JP 4338960 B2, 1999, IPC B05D 5/08 - analogue). The coating is applied to obtain high antifriction properties of the surface of the material. However, the hydrophobic properties of such a coating are unknown.

There is also a method of producing a surface with ultrafobic properties with a contact angle of more than 150 °, as well as the use of such a surface in various fields of technology, in particular for protecting the surface of a material object from icing (see Russian patent Ru 2232648, 2004, IPC B05D 5/08 ) The patent developed a method for producing such an ultra-phobic surface made of metal or plastic, the special topography (roughness) of which was obtained by etching in acids and alkalis. Then, after a thorough degreasing, a layer of gold with a thickness of approximately 50 nm was sprayed, after which a layer of a hydrophobic surfactant with a contact angle of approximately 90 ° was applied. However, to combat icing of the drainage elements of the roof roof, the method specified in the patent is too complicated and expensive.

The closest technical solution chosen for the prototype is the method consisting in the fact that a hydrophobic anti-wettable coating with a contact angle of more than 120 ° is applied to the surface of the drainage elements of the roof of the material object (see Russian application Ru 2011107829, 2011, IPC B05D 5 / 08, C09K 3/18).

The object of the invention is to protect the surface of the drainage elements of the roof of the roof of the material object from icing.

The technical result in the claimed method of protecting the surface of the drainage elements of the roof of the roof of the material object from icing is achieved due to the fact that in the method consisting in the claimed method of protecting the surface of the drainage elements of the roof of the roof of the material object from icing is achieved due to the fact that in the method consisting in the fact that a hydrophobic anti-wettable coating with a contact angle is wetted on the surface of the drainage elements of the roof of the roof of the material object ia more than 120 °. At the beginning of the vertical part of the drainpipe, a baffle ring is placed, with the coating applied to the surface of the receiving funnel, the inclined part of the drainpipe and the baffle ring. The water ring is performed with an inner cone.

Figure 1 shows a diagram of the application of a hydrophobic anti-wettable coating on the surface of the drainage elements.

Figure 2 shows the layout of the water ring and coating on the surface of the receiving funnel, the inclined part of the drain pipe and the water ring.

Figure 3 shows a diagram of the coating on the surface of the receiving funnel, the inclined part of the drainpipe and the water ring with an inner cone.

In the experiments, a drop of water on a hydrophobic anti-wettable surface is likened to a drop of mercury. Firstly, the drop takes a spherical shape, secondly, even with slight inclinations of the anti-wettable surface, the drop rolls like a billiard ball and, thirdly, when rolling over the anti-wettable surface, the drop does not leave a wet mark.

The inventive method of protecting the surface of the drainage elements of the roof of the roof of the material object from icing is that on the surface of the drainage channel 1, located at the edge of the roof 2 of the roof of the building 3, and a drain pipe consisting of a receiving funnel 4, an inclined part 5, a vertical part 6 and tray 7, apply an anti-wetting coating 8 with a contact angle of more than 120 ° (Fig. 1). In order to apply the coating not to the entire surface of the vertical part 6 of the pipe, at the beginning of the vertical part place a water-boring ring 9 (figure 2). In this case, the coating is applied only on the surface of the receiving funnel 4, the inclined part 5, and the water ring 9. The water ring 9 can be made with an inner cone 10 (Fig. 3).

Achieved technical result is that the claimed method allows to relatively completely eliminate the icing of the drainage elements (drain pipe) of the roof of the material object. During snow melt or ice on the roof, drops and streams of water flowing down along the roof 2, which has, for example, a narrow strip of anti-wettable coating along the edge, fall into the gutter 1 and, since the anti-wettable coating 8 is applied on its surface, they do not freeze, but drain into the receiving funnel 4 of the drainpipe. Since an anti-wettable coating 8 is applied to the surface of the funnel 4, the inclined 5 and vertical 6 parts of the drainpipe and the tray 7, drops and streams of water do not stick to the surface, but roll down to the ground.

In order not to disassemble the gutter that has already been completely installed on the wall of the house for coating, it is advisable to place a baffle ring 9 at the entrance to the vertical part 6 of the gutter pipe. shown in figure 3). In this case, the coating is applied only on the surface of the receiving funnel, the inclined part of the pipe and the water ring. In this case, the spherical droplets and streams of water will break down from the lower edge 11 of the ring 9. Placing the water-breaking ring at the beginning of the vertical part of the pipe will significantly reduce the labor costs of coating the surface of the drain pipe: it will not be necessary to disassemble the entire pipe, but simply disassemble its top . In addition, significant savings in expensive anti-wetting coatings are achieved.

Thus, the use of the claimed invention in the national economy of the country can give a significant economic effect and will avoid many of the damage and accidents associated with icing of drainage elements of roofs.

Claims (2)

1. A method of protecting the surface of the drainage elements of the roof of a material object from icing, namely, that a hydrophobic anti-wettable coating with a contact angle of more than 120 ° is applied to the surface of the drainage elements, characterized in that a drainage ring is placed at the beginning of the vertical part of the drain pipe, this coating is applied to the inner surface of the receiving funnel, the inclined part of the pipe and the water ring. 2. The method of protecting the surface of the drainage elements of the roof of the material object from icing according to claim 1, characterized in that the water-discharge ring is made with an inner cone.

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